Steel is building open-source browser infrastructure for AI agents & apps. We make it easy for AI engineers to ship products that interact with the web using our Sessions API - An API that controls fleets of browser sessions in the cloud while we handle everything from scaling to antibot and more.
Our tech stack:
- Frontend: Vanilla React + TailwindCSS + Shadcn, built with Vite, deployed on Vercel
- Backend: Fastify, Node.js, Zod, NATs, Drizzle with Redis, PostgreSQL, and S3
- Infrastructure: Pulumi, Go, Firecracker VMs, Docker
- Languages: Mostly Typescript, Rust, Go
With over 6,000 GitHub stars, dozens of paying customers, and millions of sessions served, we grew our platform 50x in 2025 purely through word-of-mouth and our open-source community. Backed by world-class investors, we're building a small, talent-dense team that's shaping the future of how humans & agents interact with the internet.
Current roles (all roles include competitive comp + equity):
- Infrastructure Engineer: Design, optimize, and scale our browser VM infrastructure
- Applied AI Engineer: Build on agent frameworks, integrations, and real-world AI use cases
- Founding Growth Lead: Own the growth machine to turn insane organic traction into a category-defining brand
- Founding GTM Lead: Be our first sales hire, closing deals with AI startups transforming entire industries
To learn more & apply (Mention HN): https://jobs.ashbyhq.com/steel
P.S. If you're feeling spicy, try our optional hiring challenge and submit the flag with your application once you reach the final step → https://challenge.steel.dev
At Coveo, we build AI-powered systems that bring hyper-personalization to every enterprise experience — whether it's e-commerce, customer service, or internal workplace tools. Our platform unifies relevance across the stack, helping users find what they need, when they need it.
We're looking for a Senior Fullstack Developer to help us scale these experiences. You'll design and build high-scale systems behind search, recommendations, product discovery, and Generative AI — crafting clean APIs and responsive UIs that deliver fast, personalized experiences to millions of users.
Stack: Java, REST APIs, distributed systems, React, TypeScript, responsive web apps, AWS, Kubernetes
You'd be a great fit if you have:
- 5+ years of software development experience
- A strong track record in high-scale backend development
- Experience with cloud infrastructure
- Solid front-end skills
- Strong communication skills and a collaborative mindset
We offer competitive salaries, top-tier equipment, great offices, and a team that genuinely values your input.
Interview Process: phone screen, interview with hiring manager, tech test, offer
Apply here: https://grnh.se/dxy6bbtr2us
Wolf Games is building generative entertainment universes where AI and players collaborate in real time. We’re a Series A creative-tech studio scaling the systems that turn ideas into playable, live experiences.
We’re hiring a hands-on Director of Engineering to lead ~10 engineers building JavaScript-based web games, creative automation tooling, and a hybrid GCP + AWS platform. You’ll own architecture, reliability, CI/CD, and internal tools that connect AI-driven content pipelines to production games.
Stack: TypeScript, Node.js, React/Next.js, GCP/AWS, Kubernetes Looking for: strong technical leadership, web/game systems, automation mindset, AI familiarity Rate: $70–85/hr, contract-to-hire
Doubling is partnering with an early-stage AI-driven fintech startup building a platform that converts real-time financial data and news into clear, actionable client communications.
We are actively hiring a junior full-stack engineer to help ship web, mobile, and AI-enabled features. You will work directly with the company’s CEO and CTO as one of the earliest engineering contributors.
Tech: TypeScript, React, Firebase Hours: ~20 hrs/week Location: NYC ONSITE (no remote) Authorization: US work authorization required, no visa sponsorship
Strong performance may lead to extended scope or future full-time consideration.
I am directly involved in hiring and will respond to applicants. Please apply here: https://www.doubling.io/careers/junior-software-engineer-fin...
Photon gives patients ownership of prescriptions. Our platform enables clinicians to send prescriptions to patients via text, giving them the power to compare prices, choose their pharmacy, and save money. By putting transparency and choice into patients’ hands, we’re reshaping the way prescriptions work.
Join us if you're looking to make a real impact on an industry desperately in need of one. Fill out an application here https://jobs.gem.com/photon/am9icG9zdDpL4xgxKjrEK2H6aICx8Qye !
Stack: Typescript, React, Terraform, AWS, Kubernetes
Journalytic is an early-stage company building a mission-critical operating system for professional investment teams. We combine behavioral science, structured workflows, and well-crafted software to help hedge funds, family offices, and RIAs make better decisions every day.
We’re a remote team with hubs in Pennsylvania, California, and Seattle. This role is perfect for an engineer who relishes complex technical challenges in a fast-paced startup environment. You’ll be joining a team of passionate A+ players who will support you and challenge you to grow. You won’t be a small cog in a big machine. Your work will have a direct impact on how the world’s best investors operate.
For full details and to apply, visit https://jobs.journalytic.com
alooola is a wealth management mobile app for medical professionals (investing + retirement + spending), backed by a 30-year advisory firm with ~$1B AUM. Our app is in production and we’re expanding features now that a major custody/infrastructure upgrade is complete.
We’re hiring our second engineer to own features end-to-end across React Native/TypeScript (iOS/Android) and Node.js/Express/Postgres. AI tools (Claude/GPT) are part of the daily workflow, but we care most about strong fundamentals, validation, and UX polish.
Benefits: medical fully covered; 401k match after 1 year; flexible schedule; unlimited PTO
Apply: https://alooola.breezy.hr/p/0764568c8521-ai-product-engineer
Kinelo manages the new type of hybrid team that will emerge in the future: humans+AI working shoulder-to-“shoulder”.
Our first product helps human software engineering teams deliver more efficiently and more reliably by assisting in coordination and engineering management. But it’s built on a foundational layer that ingests data, knowledge, and process across communications and systems, exposing that to humans and AI alike.
Eventually, Kinelo will become a proper human+AI orchestration layer, managing entire companies, and our goal is to have Kinelo run Kinelo (we already dogfood it today).
We’re looking for high ownership individuals to join our small team and shape its direction. We also just opened a new SF office and new hires will have the ability to help shape company culture, engineering practices, architecture, and roadmap.
We’re well-funded (just raised another round), founded by a serial founder, anti-bureaucratic, and highly technical.
We’re looking for:
- Those who want to go 0 to 1 with high ownership: moving features and products from idea on a napkin, to prototype, to engineering UI, to shipped and polished product
- ~8 years professional experience, including the pre-LLM days with strong CS fundamentals
- A balance of wisdom from experience and optimism about the future
- Strong TypeScript and Postgres (or other RDBMS) experience at scale and with high reliability (SaaS apps, APIs, etc)
- Experience with a variety of technologies, including containerization, distributed systems, and at least one strongly typed programming language (Go, C++, Java, etc)
- Ideally experience with ML and AI systems (though expertise in ML, data science, etc is not needed for this role)
We can’t sponsor visas but relocation assistance to SF is possible.
Please apply here: https://job-boards.greenhouse.io/kinelo/jobs/4088659009 and also email jobs@kinelo.com, mentioning this post.
We're looking for a passionate SWE with some linux/networking/firmware experience to drive forward some greenfield product development and help scale & deliver existing hardware-enabled offerings. We've got some scale-integrated cameras deployed in the field which enables a web-app for analytics for material sampling. We've got a few units deployed at metal recycling facilities, and we're ramping up sales. We're also building a camera-over-conveyor-belt solution for process monitoring (greenfield dev/R&D).
Desired Competencies: linux, networking, basic electronics, firmware, cloud infra (AWS), web products, databases
Nice-to-Have Experience: edge-to-cloud CV system deployment/design, .NET ecosystem (C#, EF), networking (Wireguard, ssh), firmware dev/mgmt, observability (OpenTelemetry, Prometheus), IaC (Pulumi), stats/math/ML/signal-processing fundamentals, basic soldering, web products (TypeScript, React)
Role is remote-first hybrid. For some hardware/firmware/R&D, you'll need to be in-person in Worcester MA, but majority of role is remote. Infrequent travel to recycling facilities (continental US) for deployment/maintenance will be required.
Apply here - https://apply.workable.com/valis-insights-1/j/A937EAA712/ We read and review every application. Please mention "HN" in one of the written responses.
We're also hiring an ML/SWE intern for the Spring & Summer; apply here - https://apply.workable.com/valis-insights-1/j/98C0E1509B/
Contact: caleb.ralphs@valisinsights.com
Our interview process (candidates love it): meeting w/ me > tech chat with cofounder > take home assignment (capped at 2-3hrs) > onsite interview > offer (no leet code, no algorithms or pressured oddball questions)
Open Roles: Fullstack Engineer (Senior) Python/React/Typescript * Forward Deploy Data Scientist (1-2 years xp) * Jr Data Engineer (1-2 years xp) * ML Engineer * ML Infrastructure * Data Infra Lead Engineer * Research Scientist (PhD req) * Security Engineer
We Offer: * competitive base salary + equity + great health/medical benefits * unlimited PTO * collaborative engineering-first culture
Layer Health was founded in 2023 by leading machine learning researchers from MIT and Harvard Medical School. We are building an AI layer that can accurately and scalably synthesize information from medical records, with the mission to reduce friction everywhere in healthcare. Our LLM-powered platform is solving chart review once and for all, across use cases. For health systems, our first product dramatically accelerates clinical registry abstraction in areas ranging from surgery and cardiology, to oncology. Our long term vision is for our AI layer to safely transform patient care and minimize unnecessary heartbreak. Layer Health’s diverse founding team brings expertise across machine learning, UI/UX, large language models, and medicine.
Email me at mike.hauschild@layerhealth.com for more info!
Kato is building a compliance-first AI servicing platform for the $24B lending market. While others treat regulatory guardrails as an afterthought, we’ve built a regulatory rules system with an AI decision engine on top. Our first product is a Voice AI agent currently handling loan servicing calls for major fintechs like Bilt Rewards and Parafin.
We are backed by Pear VC and angels from Brex, Bridge, and Square. You’ll be our second engineering hire, working directly with our CTO (ex-Google/Brex EM) and CEO (ex-Goldman/Brex).
The Role: As an early hire, you’ll own mission-critical projects across the entire stack. You’ll lead the architecture of our real-time voice processing system, optimize LLM integrations for compliance-aware conversations, and build out our customer-facing dashboards.
Tech Stack:
Backend: Golang, PostgreSQL
Frontend: Next.js, TypeScript, React, Tailwind
Infra: AWS, Terraform, Kubernetes, Docker
AI/ML: LLMs, Speech-to-Text, Text-to-Speech
Requirements:
2-5 years of production software experience.
Strong API design and architectural thinking.
An "owner's mindset"—we are a small, high-intensity team where everyone drives product direction.
Experience with WebRTC, real-time audio, or FinTech is a plus but not required.
Location: San Francisco (4 days/week in-person).
To apply: https://jobs.ashbyhq.com/Pear-VC/214dc247-0778-485b-8a3d-067...
Looking for:
Tech Lead: Lead a senior team, shape product and tech, work closely with founders.
Tech Stack: Python, TypeScript, Postgres, Kubernetes, GCP Languages: Spanish + English for leadership. English only OK for engineers.
SRE: DevOps & Infrastructure Engineer // CI/CD and Kubernetes
Apply here: tramcase.com
Hi, I’m Mel at Gaia AI (https://www.gaia-ai.eco/).
We’re a small GreenTech startup in Boston building hardware and software in the forestry space.
Role: Full stack / platform engineer working on the web app and mobile app. Our stack includes TypeScript, React, Mongo, AWS, and React-native.
Role: Robotic Perception / Computer Vision / Machine Learning engineer working on a sensor-packed backpack for foresters. Our stack includes LiDAR, Vision, SLAM, and Rust.
Preferred Years of Experience: >= 3
Company Size: 7 people
Company Location: Downtown Boston near South Station
For Fullstack apply here: https://docs.google.com/forms/d/e/1FAIpQLSeXplH__tMz_EIRS4yq...
For Perception apply here: https://forms.gle/t7uwLgo5UgadkzrAA
Feel free to reach out to me with questions: mel at gaia-ai.eco
With Buildplace, you can simulate your planning projects in a digital twin in no time. The integrated inventory mapping captures the complexity of your real estate portfolio and transforms it into an interactive map that you can easily enrich with additional geodata. Furthermore, our holistic consulting approach supports you with individual project planning, customized enhancements, and the targeted application of Buildplace for your specific use case.
We are a team of ~10 persons half of them engineers. This might sound small, but we are bootstrapped and try to keep our software stack observable. We program mainly in Typescript with Fastify, BullMQ, GraphQL (Pothos) on the backend, Postgres and Redis as DBs [ and React, Maplibre, BabylonJS on the frontend ]. We see demand in more expertise for container orchestration, load balancing, reverse proxy configuration, VPS Administration and monitoring.
Therefore, if you are curious about our field of work and have knowledge in system administration and / or backend engineering with the stated technologies, feel free to reach out to us!
Contact: mail [at] formfollowsyou.com
I’m the founder, trying to do “enlightened business.” We are a people-first, fully-remote, boutique indie tech agency – building a team of talented, high integrity, and community-minded individuals first, then building businesses around them. Our leadership staff are ex-Fortune 100; everybody touches code. Notable recent projects: internal tools for Anduril, and the auction system for voltagepark.com.
We’re currently especially seeking:
Full-Stack Software Engineers (React, NextJS, Ruby on Rails; Typescript, Python; Database Design, Devops, and third-party API integrations)
IoT Developers (Python, MQTT, GraphQL, AWS, Test Infrastructure)
Please apply using this Google Form: https://forms.gle/Dxpj7eTwcHpjiGT39. Applicants who submit before January 15 will typically receive a reply by January 31. Tier3 roles are typically 5-10 y/o/e with $150-$175k annual total comp. Tier4 roles are 11-20 y/o/e, $210-$250k annual total comp. Higher tiers exist, and we welcome exceptional applications.
REGARDING DECEMBER - if you already submitted to last December's post, and haven't heard from us yet, we're still getting to you. The team's been working really hard over the last year, and I unexpectedly gave most of the folks helping me with job submissions the time off at the end of December / beginning of January. Apologies for the delay, and we will be with you soon. Rest assured there are jobs we're trying to fill - in fact, more than ever, it seems.
At Tasklet (https://tasklet.ai/), we're building the world's most powerful AI agent platform for business automation.
We're looking for a staff-level software engineer to share technical leadership of our core agent infrastructure. You'll architect systems for multi-step agent orchestration, state management, trigger systems, and seamless integration with thousands of APIs.
Our stack: TypeScript, React, GCP, Kubernetes, Claude
Looking for: 5+ years experience building production-scale systems, proven technical leadership, experience building AI agents, exceptional programming skills across the full stack.
Compensation: $260k-$330k salary + 0.8-1.6% equity, competitive benefits including medical, dental, vision, 401k, 4 weeks PTO
Apply: https://shortwave.notion.site/Open-Positions-at-Tasklet-2a36...
PowerSync is a sync engine that keeps your backend database in sync with on-device SQLite. We support Postgres, MySQL, MongoDB and SQL Server as source databases and have a plethora of client SDKS, many of which are integrated with popular libraries and frameworks on the client-side like TanStack DB, Drizzle, GRDB, Room, etc
If you're a database enthusiast and have a solid track record of building, deploying and maintaining backend systems on modern cloud stacks at scale, please check us out.
Detail: https://www.powersync.com/careers/senior-backend-engineer-an...
Our team is small and polyglot, but experience with TypeScript is a must.
Experience with OSS projects is also a must - either you've made significant contributions to popular devtool projects or, better yet, you have your own.
Culture: We're agile and devops purists (before those terms got coopted)
Location: Frederick, MD or REMOTE (US), ET timezone
AOPA is a nonprofit that supports and advocates for general aviation pilots through safety programs, training, advocacy, and digital platforms used by hundreds of thousands of members.
You would lead a team of 6–10 engineers and various consultants working on AOPA’s core digital platforms.
Stack: TypeScript, Swift, iOS, Astro, Cloudflare Workers, .NET, Azure
Looking for: former senior engineer turned engineering leader, strong people leadership with solid technical judgment, clear communicator aligned with business outcomes.
If you love general aviation and supporting the GA community, this role is a strong fit. Perks include free flight training.
Email alex.polvi@aopa.org if interested. I am a former YC founder (Cloudkick W09, CoreOS S13), active pilot.
Prove AI is an AI management platform that helps organizations centralize and manage their AI models while maintaining strict oversight of data access and usage. Built on distributed ledger technology, Prove AI provides tamper-proof oversight, ensuring organizations can set and enforce guardrails to mitigate risk and optimize AI performance.
Senior Engineer's - experienced, hands-on engineers who can take end-to-end ownership of complex full-stack systems—spanning TypeScript, React, Node.js, and generative AI integrations—and operate effectively in a fast-moving, early-stage environment.
Principal Engineer's - Lead the technical aspects of the engineering team, mentor engineers, set high standards in architecture and developer-experience, architecture and developer-experience standards, and influence senior leadership across all business functions with clear trade-off narratives and mechanisms that scale.
Candidates must have Full stack experience as well as AI/ML experience
Contact: Richard@proveai.com - you can review and apply for the Senior via this Link - https://proveai.careers.hibob.com/jobs/c2e0ebfc-0922-424b-88... and the Principal via this Link - https://proveai.careers.hibob.com/jobs/43158dce-e153-41f7-b6...
THE MISSION:
Help providers and patients make life-changing medical decisions with accurate, timely genomic test results. Our EMR team builds the interoperability backbone that connects hundreds of healthcare organizations to Natera's testing platform.
THE CHALLENGE:
• Build next-generation EMR integration platform handling thousands of daily transactions
• Wrangle healthcare standards (HL7, FHIR, CDS) across 100+ organizations with varying implementations
• Create scalable workflows for test ordering, results delivery, and medical record exchange
• Transform legacy healthcare data into modern, structured formats
WHAT YOU'LL BUILD:
• Real-time message processing systems handling patient orders and lab results
• Integration adapters for major EMR systems (Epic, Cerner, etc.)
• APIs and workflows that ensure critical test results reach the right clinicians quickly
TECH STACK:
TypeScript, Node.js, Jest, Cypress, infrastructure-as-code
TEAM:
Small, high-impact team managing full-stack ownership
Healthcare/Epic experience helpful but not required - we'll teach you the domain.
The Electronic Medical Record (EMR) space has interesting technical challenges: creating flexible systems that handle both strict standards and real-world healthcare data chaos, all while maintaining HIPAA compliance and sub-second response times.
Contact: astruthers@natera.com or linkedin.com/in/code-lorde
At Findigs, we’re transforming the rental experience — making it fairer, stress-free, and more convenient by changing the fundamentals of renting.
We build high-scale applications that streamline renting for millions. Our modern tech stack includes Python, Typescript, Node.js, React, and scalable cloud infrastructure.
We foster a collaborative culture where engineers have high ownership and autonomy, taking features from concept to deployment.
Join our sharp, supportive, and mission-driven team in our newly renovated SoHo/NoHo office.
Open role: Senior Software Engineer —> Apply here (https://jobs.lever.co/findigs/3b39616d-223f-4326-a500-f804c3...)
Base Salary of $180k - $210k
Pre-IPO Equity
401k Matching up to 4%
Unlimited PTO
Lunch in office every day, home office setup stipend, monthly gym stipend
We’re building long-horizon agentic analytics for enterprises. A semantic engine + context graph that grounds agents in real data and decisions. Agents that orchestrate multi-step workflows, recover from failure, and explain why a decision is correct.
Senior Software Engineer (TypeScript): Build workflow orchestration systems, schedulers, and execution engines. Own Node.js services + React UIs end-to-end. Reqs: 5–8+ yrs TS/Node/React, event-driven systems, queues, Docker. Bonus: Temporal, n8n, Airflow, Dagster, multi-tenant SaaS.
Senior Software Engineer (Python): Build and operate production Python services powering workflows and agents. Reqs: 4+ yrs Python, FastAPI (or similar), Docker, Celery/RabbitMQ/Redis, AWS EC2, observability. Strong ownership, clear reasoning, modern Python practices.
Senior AI Engineer (Python): Build production LLM agent systems: orchestration, tool use, evals, RAG, safety, observability. Reqs: Strong Python, agent frameworks (LangChain or similar), FastAPI, Docker.
Apply: submit this short form to be considered quickly: https://forms.gle/1ART5fwjXz3AsX9H9
Please select “Hacker News” for How did you hear about Terrabase?
Metabase is an open source (https://github.com/metabase/metabase) business intelligence software that lets anyone in your company rummage around in the databases you have. It connects to a number of databases / data warehouses (BigQuery, Redshift, Snowflake, Postgres, MySQL, etc).
Here's a dashboard about us: https://stats.metabase.com/public/dashboard/92d6b7ea-7526-48...
People rather like the product (https://metabase.com/love). We're a remote team full of people who care about user experience, making complicated things as simple as possible and building things. We have a deeply pragmatic engineering culture and value building things that people actually use vs whatever closes a deal or makes for a good press release.
Tech stack: Clojure on the backend, Typescript and React on the frontend
We've posted in several "Who is hiring" threads in the past with good success, we hired quite a few folks from these posts!
Frontend Engineer role:https://jobs.lever.co/metabase/8f02d3fa-edf4-4433-a6d1-4f9e5...
Backend Engineer role: https://jobs.lever.co/metabase/85f454d8-e795-4978-8a2b-4b8bf...
Engineering Manager role: https://jobs.lever.co/metabase/5bf3233d-a162-47b2-8d85-d3650...
Product Designer role: https://jobs.lever.co/metabase/b6ab96a1-5d3f-4e5b-a611-5a79d...
Product Manager role: https://jobs.lever.co/metabase/98aa4a3d-58e4-4c69-895f-7cf50...
We're expanding our team and looking for passionate individuals to join us in building innovative solutions for philanthropy in the DAF team (we provide the technology that runs the Charityvest DAF). Our current openings include:
Senior Software Engineer, Back-end, DAFs: Design and implement core products for our Donor-Advised Fund (DAF) offerings, using a modern fully serverless event-driven architecture in AWS with TypeScript and Postgres.
Senior Software Engineer, Front-end, DAFs: Craft exceptional, high-performing user interfaces for our DAF platform, using modern React 18+ and Next.js 14+ features.
If you're passionate about fintech and making a meaningful impact in the world of charitable giving, we'd love to hear from you.
Feel free to email me your LinkedIn and I'd be happy to share more details: edmundo+hn [at] charityvest [dot] org
Taking on the entire insurance industry.
Full stack software engineers. Python and typescript.
https://calendly.com/sam-corgi/session
corgi.insure
Noise is building a way to measure and trade attention — something the internet produces endlessly but no one has been able to objectively track. We create a transparent, real-time market for attention itself, revealing what the world actually cares about as it changes.
Team of 10 in SoHo. We look for people with great taste who ship code, design, or convey user needs into delightful products.
Hiring:
Senior Frontend Engineer — Own and ship features across the stack with a frontend focus. Work closely with design to build fast, reusable components. React, TypeScript, Tailwind.
Senior Mobile Engineer — Architect and build our React Native app from zero to launch. Own performance, motion, and polish. Every frame and gesture should feel native.
For both: Not a vibecoder. Uses Cursor or similar to empower, not replace. Strong attention to detail, self-QA, taste for motion and interaction.
We're building a unified platform for credit and financial data to power financial inclusion globally. Our mission is to unlock economic opportunities for consumers historically excluded from traditional credit systems by transforming diverse data into actionable risk insights. We are YC company backed by investors from Canapi Ventures, Kleiner Perkins, General Catalyst, and Index Ventures
-> Hiring software engineers from Mid-Level to Staff
-> Tech stack: Node.js, React, TypeScript, Python, PostgreSQL, AWS
You'll work on enterprise-grade APIs, data integrations, advanced analytics, and seamless user experiences. We're looking for engineers who thrive in fast-paced environments and want to make a meaningful impact on financial inclusion.
Apply at https://job-boards.greenhouse.io/novacredit and mention HN.
Stack: React, Angular, TypeScript, Node.js/FastAPI, Postgres, Redis, Docker, GitHub Actions, AWS/GCP, OpenTelemetry.
Culture: AI-native (everyone uses Cursor/Copilot), small teams, high ownership, fast iteration.
Learn more and apply at: asbl.in/careers/software-engineering. Please mention you saw us on Hacker News.
We are applying AI to organize corporate events.
We are looking for a senior engineer with at least ten years of full stack experience, a strong focus on product and UX, and optionally some experience building LLM based products. Currently we are focussed on building tooling that enables us to capture domain knowledge from experts to streamline prompt creation and evaluation. Our tech stack is Typescript, React, Next.js and Tailwind. On the backend we use Drizzle with Neon, deployed and monitored via Vercel. We have pre-seed funding from a major US VC and are experienced founders. You’ll be working alongside the founders (ex-Apple, ex-Airbnb, ex-Tulip, ex-Tourlane) and will have a chance to shape the company, product and of course the engineering culture.
Apply here: https://eventfirst.jobs.personio.com/job/1646275
We are hiring for four roles:
1. Full Stack Engineer: Full Stack Engineer to support our benchmarking of AI and with communicating these benchmarks to our users. Proficiency in Typescript & Python required. Familiarity with LLM APIs preferred. Tech stack: Javascript/Typescript, Node.js, React/Next.js, Python.
2. ML Engineer: ML Engineer to support our benchmarking and evaluation of AI software stack. You will design and run benchmarks and evaluations of different AI models. Strong analytical skills and proficiency in Python required.
3. Member of Technical Staff: You will develop benchmarks to test AI models and work to translate technical insights to analysis that helps companies navigate AI.
Apply at hiring (-at-) artificialanalysis.ai with your resume, github and dot points on relevant experience (including anything you've built). Add | HackerNews to email subject line.
Rinse provides dry cleaning and laundry delivery services to customers in twelve metropolitan areas in the US and Canada. We have sophisticated logistics optimization software, a polished consumer product, and firm business fundamentals. We're now over a decade old - this is a stable, yet consistently growing and innovating, company.
Our engineering team is distributed across the United States and internationally, and has been entirely remote for years now, but a desk can be provided in the above cities if you'd prefer.
We're open to both newly-graduated engineers or more senior engineers, provided they meet our bar. We're particularly interested in true full-stack engineers, with strong React / Typescript / CSS skills to complement comfort in a Python / Django environment. We're also seeking engineers with experience leveraging AI to automate complex operational processes.
Search term bingo: Logistics, Django, Python, Optimization, React, React Native, Postgres, Mobile Engineer, Automation, Delivery, OR-tools
Tech stack: TypeScript | Node | React/Next.js | Postgres | Docker | K8s | LLMs
We’re building the AI-powered infrastructure layer for small-business lending. Banks and fintechs use Omni to automate document collection, financial modeling, public-record research, and ongoing borrower communication.
You’ll work on:
1. Wrangling messy PDFs into usable data (we built a major open-source extraction library: https://github.com/getomni-ai/zerox)
2. Aggregating millions of datapoints from 50+ public sources (UCCs, liens, licenses, tax records) + credit/KYC/AML data
3. Building real-time financial models that combine OCR, LLMs, and rule-based systems into predictable outputs
We’re early, you’ll have a huge impact. Email me (my name at the URL) or apply here: https://www.ycombinator.com/companies/omniai/jobs/Dr0GIaE-fu...
Featurebase is a modern customer support & product feedback platform powering thousands of teams, including Lovable, Raycast, and n8n. Fully bootstrapped, profitable, and growing fast.
We’re building a full customer-facing suite where teams can handle their customer support, feedback prioritization, and product updates - all in one place.
We’re looking for a full-stack product engineer to own and ship core product features end-to-end, with a direct impact on Featurebase’s future.
Stack: NextJS + Typescript for the frontend, Node.js for the backend, MongoDB, Redis.
If you like small teams, autonomy, and shipping meaningful product work, we’d love to have you on board!
Apply here (we read every submission): https://go.featurebase.app/careers
Scorecard is the simulation platform for self-improving AI agents. We help teams encode expert judgment into reward models and run 10,000s of scenarios in minutes instead of reviewing 10s of production cases over weeks.
Our team built simulation systems at Waymo, Uber ATG, and SpaceX. Same discipline, applied to AI agents. Backed by Kindred Ventures and Neo, with multi-billion dollar customers.
Founding Software Engineer ($175k-$250k + equity)
Build infrastructure for large-scale agent simulation, reward model pipelines, and scenario generation. Ship fast with a low-ego team.
Stack: TypeScript, React, Node.js, Postgres. Bonus: LLM/RL experience, founder background.
https://www.scorecard.io/careers/software-engineer
Founding GTM Lead
Own demos, sales playbook, and positioning for AI teams building frontier agents. 3+ years early-stage sales/product marketing. AI/developer tools experience a plus.
https://www.scorecard.io/careers/founding-gtm
In-person in SoMa. Full benefits, daily lunch, unlimited PTO.
Apply: jobs [at] scorecard.io (mention HN)
Equity-only co-founders. If you must take a salary position, send us a resume with "Salary only" and we'll check back later.
We're developing an efficient social-decision model so that communities can organize social-finance campaigns and effectively administrate funds without being beholden to one creator. Keeping funds in the hands of backers creates accountability and is one key to taking social finance to the next level.
We say that our social tech "makes the money smarter." It will do this by making communities smarter. How we do social will change how every future social platform gets built and will upset every social product on the market. Society will benefit tremendously from the more coherent discourse.
To bootstrap our platform, we are developing an music visualizer called MuTate. It will soon be powered by our in-house machine learning tricks, which do not rely on back-propagation in order to enable radical forward architectures that are smaller and easier to develop and train. This work directly impacts our mission and aligns us both with consumer enthusiasm for small & local AI to run outside the cloud and with people working on hard problems that need AI tool-kits they can embed their own world models within.
We are using PrizeForge as a better kind of Patreon while we finish our crowd cognition implementation and start to integrate social decisions with our existing social finance.
Our entire tech stack is Rust where possible. We use Leptos, Axum, Postgres with SQLx. It's like a full-stack typescript setup, but with Rust and WASM. MuTate uses Rust, the Vulkan API, and Slang.
Anyone who materially accelerates the trajectory of the company will participate proportionately in the rewards. Our work on MuTate will put us default-viable. Our work on crowd cognition and community-organized campaigns will likewise make use default-viable.
Prototype two-dimensional fund raising: https://prizeforge.com Career listings with more details: https://positron.solutions/careers MuTate Github repo: github.com/positron-solutions/mutate
Korean language skill is optional but anticipate learning business Korean and translating a lot. Same timezone is as far as will be considered remote unless you're physically stuck in Ukraine etc and begin by contributing on MuTate.
Architect recently raised a $35M series A and is looking to fill a number of software engineering roles.
As a key member of our growing team, you will help build out our advanced exchange which is the world's first centralized and regulated exchange for perpetual futures on traditional assets (FX, stocks, metals, interest rates, energy, compute, and other commodities).
Bonus points if you have:
- Experience with Rust
- Experience working in the finance industry, or a strong interest in electronic trading
- Knowledge of architecture, testing, and deployment of distributed systems
- Live in Chicago
Full-stack development experience with Typescript and React a plus
If you’re interested, please send a resume and brief intro to jobs@architect.co or reach out to me with any questions about the role
At Pelairo we're building the most intuitive and flexible Laboratory Information Management System (LIMS) on the market. "Manage the lab, not the LIMS!"
After a successful hire from our post in November, we're back! We're looking for a hands-on Senior Full Stack Developer to help design and deliver core product experiences across our stack (TypeScript + NestJS on the backend and Next.js on the frontend.) You'll work on customer-facing workflows, turning ambiguity into shippable slices, and helping us level up reliability, security, and speed as we scale.
What you'll do:
- Build features: implement and ship production ready functionality across frontend and backend (TypeScript, Next.js, NestJS). - Backend: contribute heavily to APIs, data models, and integrations that power questionnaire-driven workflows and FHIR pipelines. - Frontend: build intuitive, configurable UI modules for complex healthcare workflows, collaborate closely with Product and domain experts. - Quality & reliability: contribute to testing strategy (unit/integration/contract/E2E), safe migrations, and rollouts (feature flags). - Observability & performance: instrument tracing/metrics/logging, improve dashboards/alerts, and participate in incident reviews and follow-ups. - Engineering excellence: raise the bar through strong code reviews, pragmatic standards, and improvements to the developer experience. - FHIR correctness: help ensure backend transformations produce valid FHIR resources in Medplum and support scalable data flows. What makes you a great fit: - 7+ years building production web applications (frontend + backend) in a fast-moving environment. - Strong TypeScript + Node.js experience and solid production exposure to NestJS (or comparable backend frameworks with willingness to ramp quickly). - Strong experience with modern React-based frontend development (React / Next.js) and comfort owning UI implementation details. - Experience shipping ambiguous projects end-to-end with good judgment, pragmatism, and clear communication. - Familiar with building secure systems and thoughtful about reliability, testing, and performance. Bonuses: - Experience with FHIR / Medplum, healthcare data workflows, or LIMS/clinical systems. - Familiarity with HIPAA and/or SOC 2 practices. - AWS experience (e.g., Cognito, Fargate) and comfort working in cloud-native environments. Stack: TypeScript (Next.js + NestJS), Medplum, AWS (Cognito, Fargate) Visa/relocation: NoHow to apply: Email hiring [@] pelairo.com and mention "HN Who's Hiring January 2026." (We know our website needs some work, but the product is our priority right now.)
Count is an infinite, real-time canvas where SQL, Python, and low-code query cells live side-by-side with visualizations and freeform whiteboarding. It replaces the traditional linear notebook with a collaborative space for modeling, analysis, and presentation.
Under the hood, we've built a custom WebGL rendering engine, data visualization library, graph-based modeling layer, and horizontally scalable compute engine (DuckDB-based) that dynamically shifts execution between browser and server to minimize latency and reduce database load.
You'll help evolve the core platform: integrating agentic workflows into data exploration, pushing the performance limits of our distributed execution layer, and building powerful new analytics experiences used daily by customers. You'll have high autonomy and ownership over major parts of the product and technical roadmap, from architecture through production.
Tech stack: TypeScript, Python, Node.js, WebAssembly, WebGL, Apache Arrow/Parquet, DuckDB, Kubernetes, React.
Apply here: https://jobs.ashbyhq.com/count
Arcol (arcol.io) is a small, high talent density team building the future of building design - a future that's collaborative, fast, and intuitive. We're a web-native, fully collaborative 3d design tool modernizing the experience of architectural design for teams of all sizes.
We're looking for senior engineers with experience in modern web technologies - some of our key technical building blocks are Typescript, Rust, wasm, WebGL - and a strong ownership mindset. Experience with computational geometry, computer graphics, or similar a strong plus. This role sits at the intersection of solving deep technical foundational challenges with shipping a product that solves real problems for real people.
Reach out to me directly at thomas@arcol.io or peruse our careers page (https://www.arcol.io/careers) - we'd love to hear from you!
Beacon AI builds intelligent systems that make aviation safer and more autonomous. We’ve completed multiple DoD programs and are expanding our team with exceptional technical leaders to push the boundaries of human-machine collaboration in the cockpit. At Beacon, you will lead by example, mentoring and growing a small team of talented engineers (typically 1–2 to start) while staying hands-on in design and execution. You’ll help shape critical systems that advance aviation safety and autonomy, working alongside a team that values effort, creativity, and accountability.
We’re hiring Lead Engineers with 5-9 YOE who love solving complex problems. At Beacon, you’ll own your work end-to-end, from prototype to deployment, and literally see your code take flight in real world aviation environments! Roles:
++ Lead iOS Engineer [Tech Stack: Swift, SwiftUI, UIKit, Mapbox]
++ Lead Infra/Backend Engineer [Tech Stack: AWS]
++ Lead WebApp/FrontEnd Engineer [Tech Stack: Python, Typescript, React]
++ Lead Autonomy/Robotics Engineer [Tech Stack: C++, Python, iOT]
++ Lead Security Software Engineer [Skills: Ability to perform hands-on security engineering tasks, CMMC Compliance Knowledge]
Join us at beaconai.co/careers. Mention in the application that you saw our post on HN.
EQTY Lab is focused on emerging governance and security paradigms for AI infrastructure. Our primary focus is verifiable computing using cryptographic capabilities to identify and govern agent behavior.
We're also focused on helping the industry advance with frontier tooling. From requesting the hooks feature in Claude Code, to building our own open-source integrated capabilities such as https://github.com/eqtylab/cupcake - we will continue to explore and share the things we develop for coding agents or any frontier tooling enterprise is quickly adopting.
We're seeking software engineers across the full stack. To include,
- engineers interested in governance tooling - sdk writing in TypeScript or Rust - or engineers with cryptographic security domain experience - or deeper hardware level focus (platforming on Kubernetes - confidential computing, custom firmware as it relates to GPUs). For all of this, we're seeking experienced devrel to help us communicate and build tooling the right way.Please email me directly: ramos@eqtylab.io
Common Prefix is a blockchain research & development company. Blockchain technologies enable large-scale economic coordination through shared, programmable ledgers. Our mission is to solve the foundational scientific and engineering challenges standing in the way of mainstream adoption, particularly around interoperability, scalability, and usability. We combine formal scientific research with production-grade engineering. Our team publishes in top-tier peer-reviewed venues and builds open-source infrastructure used across major blockchain ecosystems. We have contributed to advanced systems including Axelar, XRPL, Sui, and Flashbots, and are trusted partners to protocols building critical infrastructure.
What we're looking for:
Software engineers who can solve problems, are smart, get things done, and enjoy working on the bleeding edge, learning about cryptography, and working from first-principles.
Tech stack: Doesn't matter, we'll teach you. But we work mostly with Rust, Go, and TypeScript.
Open roles:
- Software Engineer (mid): https://www.notion.so/commonprefix/Opening-Software-Engineer...
- Senior Software Engineer: https://www.notion.so/commonprefix/Opening-Senior-Software-E...
- DevOps: https://www.notion.so/commonprefix/Opening-DevOps-Engineer-2...
We offer:
- $50,000–$160,000 / year cash + stock grant + performance bonus (depends on level but not location)
- Local from Athens, Greece, or remote
- Conference participation in exciting scientific and engineering venues, 2-3 times per year
- The opportunity to work and learn from world-class scientists from major universities in the field of blockchains, cryptography, and consensus
Apply here:
https://commonprefix.notion.site/2b7bf672de828051b53cdd37811...
Blackbird builds web + mobile apps for startups and innovative companies. We work on interesting, greenfield projects, and rely on small, veteran teams who have lots of autonomy. Everyone is a remote contractor, and our work culture is low-drama and highly collaborative. No pointless meetings, no bureaucracy, no egos and lots of time spent building things.
We’re looking for senior full stack engineers / CTO consultants / data scientists. We value engineers who are strong technically as well as great communicators. We work with lots of freelancers who appreciate the steady, interesting work.
Our typical stack is TypeScript, React, Postgres, and AWS although it will vary project to project.
If you enjoy moving fast, working with great engineers, and building something from the ground up, you’ll fit right in.
If interested, reach out directly to me at vance [at] blackbird.us
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Ezra is a venture-backed startup building at the intersection of sustainable finance and artificial intelligence. We're building a platform to accelerate capital deployment into climate solutions and other world-positive investments.
I’m Rob, the CTO, and we’re looking for multiple seasoned, full-stack Senior+ Engineers (6-10+ years exp) to significantly contribute to the development and scaling of our core platform. We are specifically looking for teammates in Central and South America (LATAM) who can work US Eastern hours. This is a high-autonomy role for a proven generalist who is deeply product-focused and takes complete ownership of features from concept to production.
The Role:
Drive technical delivery of full-stack features end-to-end, collaborating with Product and Design to define requirements and ensure engineering quality.
Design and develop scalable components and APIs across our backend and frontend.
Work to integrate, serve, and iterate on model-powered features and RAG systems.
Contribute to system architecture decisions and the evolution of our infrastructure.
Stack: Python (FastAPI), Typescript, Next.js, React, AWS, Terraform, Postgres (SQLAlchemy).
Contact: Email me directly at robert+hn26@ezra.fi with your resume
Spruce lets users control their data across the web. Instead of users logging into platforms, we believe platforms should request to access data vaults controlled by users.
The demand for trusted digital ID is accelerating as AI deepfakes begin to destroy most of the ways we use to verify identity today. How private or secure is it to hold your driver's license or passport up to a webcam to get a bank account? Was it ever private or secure? Stable diffusion can break so much of this already. Society will need trusted digital IDs and credentials. Our mission is to allow them to be controlled by individuals, with safeguards to prevent descents into surveillance states and checkpoint societies.
We are the main implementers of category-defining initiatives such as the digital ID program for the California DMV, and the verifiable digital credentials program in Utah. We are private sector participants in NIST's National Cyber Security of Excellence initiative for privacy-preserving digital ID.
We are hiring skilled engineers who care about making a real impact in improving public services, digital autonomy, and user privacy for the world. We work closely with public sector agencies, and have high regard for public servants. We have a strong engineering and customer-oriented culture, and are not simply a SaaS product or AI wrapper. Our roles are not for the faint of heart: you will be expected to work hard and learn a lot in this role.
Our engineers are ambitious to get outcomes for our customers and their constituents. On any given day, they may write great Rust/C#/TypeScript, deal with mainframe dumps, read policy documents, respond to technical RFIs/RFPs, manage on-prem environments, implement new NFC + Bluetooth protocols in Swift/Kotlin, create CI/CD processes that enforce W3C accessibility guidelines and i18n requirements, rewrite lost specs from disassembled binaries, figure out stablecoin payments, and design new protections for public key infrastructure. It is a team effort, and people with T-shirt shaped skills are able to collaborate and learn a ton from each other every day.
We are interested in candidates who want to be proud of the meaningful impact they make for society, even if it takes time to get right. This is not the right job for someone who wants to "join a cool new AI startup" that implodes or exits in under a year.
See our roles here: https://jobs.lever.co/sprucesystems/
RepSpark is the top SaaS B2B wholesale e-commerce platform for brands in apparel, footwear, and accessories. For example, we're how golf courses across North America and Europe purchase brands like Titleist, Peter Millar, Kjus, etc.
Stack: C#/.NET (Rider on macOS), GraphQL, React, TypeScript, PostgreSQL, AWS (CDK).
We're actively hiring:
* Senior Product Engineer (Full-Stack): Own outcomes across React/TS + C#/.NET + Postgres; help modernize legacy .NET Framework to .NET 8; build/scale ERP ETL & integrations. https://www.repspark.com/senior-product-engineer-full-stack
* Product Manager - Integrations: Own the integrations roadmap; prioritize ERP connectors (NetSuite, SAP, etc.); partner closely with engineering. https://www.repspark.com/product-manager
Email careers@repspark.com with your resume and optionally GitHub/portfolio.
Chroma is the open-source search and retrieval database for AI applications. It supports dense vector, sparse vector, regex, and full-text search. We support local, single-node, and cloud hosting.
We're a team of 14, all engineers today. We work in Rust, Python, Typescript, and Go.
We're hiring for these areas:
- Product design
- Production engineering
- Platform engineering (Rust)
Apply here: https://jobs.ashbyhq.com/trychroma/9ed3aee8-07dd-44e3-9ca1-d...
More details at: https://careers.trychroma.com
Product Engineer: (React/Typescript) who would work closely with product and design to build user-facing parts of the platform. You will craft performant, stable frontends that explain technical concepts to non-technical users and help us iterate fast based on customer feedback.
AI Engineer: Applied AI plus strong software engineering. You will build, evaluate, and deploy LLM-driven features like deep document analysis and interactive chat, working with models from OpenAI, Anthropic, and Gemini. Expect hands-on Python, ML system design, experimentation, and production reliability. Bonus for RAG depth and frameworks like LangChain, LlamaIndex, or Hugging Face.
Backend Engineer: (looking for Kotlin/Java/Scala experience). You'll work across the backend: building enterprise integrations, large-scale scraping and parsing pipelines, and systems that let users apply LLMs to millions of documents to generate insights at scale.
We're looking to build our in-person team in NYC but also open to remote!
Apply: https://starbridge.ai/careers and mention HackerNews or email recruiting@starbridge.ai with your resume.
Freetrade is a commission-free investing app used by over 1 million people in the UK. Our team is expanding, and we’re seeking software engineers to evolve and scale our core investing platform.
In this role, you will be instrumental in building and maintaining reliable and trustworthy systems for trade execution, clearing and settlement, asset servicing, and internal operational tools.
You will also play a key role in shaping our technical direction and mentoring other engineers as our team grows. Tech we use: TypeScript, Node.js, Postgres, and GCP
Note: We are three days in the office We don’t sponsor visas at the moment.
We are hiring across the board in engineering, data, people, marketing, risk & compliance and finance.
See all of our opportunities here: https://freetrade.io/careers
We’re building an AI-first bioinformatics platform to empower life science researchers with agentic AI and LLMs. Backed by pre-seed funding, a government grant, and real demand from biotech and seed companies, we’re looking for versatile engineers to help us shape the future of AI in genomics.
What you’ll do:
• Architect and build AI workflows, agentic interfaces, and data pipelines
• Work across the stack: Go, Python, TypeScript
• Contribute to system design, infrastructure (AWS, Docker, Terraform), and devops
• Collaborate closely with scientists and iterate from prototype to product
• Help define our technical culture and roadmap as a core founding member
Nice-to-haves (not all required): LLM integration, RAG systems, HPC infra, ML, cloud/on-prem hybrid systems
About us: We’re an early team of engineers and scientists with strong academic and industry backgrounds (ex-BCG, PhD in Plant Biotech, M.Sc. AI). We’re committed to building something impactful, technical, and genuinely useful for life science.
Apply: hello@ploid.ai
More about us: https://ploid.ai
We also consider internship requests from strong student candidates.
IMPORTANT: We are now seeking for expertise in frontend / full-stack and PhDs with AI applied to life science bioinformatics (multiomics and/or chem)
Thanks everyone for all the support in our August and September posts! HN really helped finding amazing engineers.
Gobii is the easiest way to deploy browser-use agents in the cloud or on-premises. We're building an open-core AI workforce platform—browser-native agents and automation tools. We have paying customers.
The entire team contributes to browser-use. We also have contributors to Apache NiFi, LiteLLM, and RA.Aid (open-source coding agent I created). Open source is core to how we build and how we think. We're backed by Open Core Ventures.
HQ is San Francisco, but much of the team is in the DC area. East Coast timezone preferred, DC area even better—but we're fully remote.
What we're building: The orchestration layer for browser-use and AI agents. Systems that navigate, reason, and execute on the real web.
Who we're looking for: You've built agentic systems that shipped to production. You have opinions about tool use, context management, and why most "agents" are just glorified prompt chains. You strongly prefer working in the open—a significant part of this role is contributing to OSS repos. We strongly prefer candidates with existing open source contributions.
Why now: We have strong traction and are expanding the team. You'd be early—with real influence over product, architecture, and how we work. High autonomy, high trust, small team of people who know what they're doing.
Comp: Cash + healthcare + modest 401k match + options. In line with SF-based VC-backed startups at pre-seed stage.
Stack: TypeScript, Python, browser automation, LLM orchestration.
Email: careers@gobii.ai (subject: "HN")
- Radar is the geo-location dev tool
- Doing 1B+ API calls per day
- Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform).
- We're based in NYC with our HQ in Union Square and remote friendly (US)
Interesting things we're working on:
- HorizonDB, our Geospatial database written in Rust
- Precise indoor location more accurate than iOS and Android leveraging Ultra-Wideband, other mobile sensors and ML.
- Extracting raw map data from satellite maps and the web leveraging ML and AI
- Anomaly detection to identify spoofed locations
- Mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time
- Multi-Region AWS K8s deployment, 99.99%+ availability
- Frontend tools to visualize and debug location data at scale
Check out our jobs page here: https://radar.com/jobs#jobs If you have any questions, feel free to reply here or you can e-mail me at tim@radar.com
Hey HN! I'm Alexander, one of the founders of Hatchet. Hatchet is an open-source platform for running background jobs at scale.
We're hiring engineers who are excited to build the next class of engineering primitives, starting with queues, background tasks and durable execution. We started in early 2024 after launching our distributed task queue (https://news.ycombinator.com/item?id=39643136).
Hatchet is currently used by thousands of engineers for all kinds of workloads: log ingestion pipelines, code review agents, video encoding, GPU scheduling, etc. Our target customer is fast-growing startups who have a strong need for background jobs system. These days, that tends to be AI companies, though we're general-purpose and not exclusively targeted for AI workloads.
Stack: Postgres, Go, Typescript, React, Kubernetes
Apply here: https://www.ycombinator.com/companies/hatchet-run/jobs/SNpCm...
Or email me at alexander [at] hatchet [dot] run
You'll work with me (CTO, ex-Airbnb/Loom/Hightouch) to build key parts of our video + AI tooling. Video is hard, and we need to move fast to win. We have real customers, a lot to build, and strong conviction in our space. This is genuinely a very fun project and I'm looking to build my core team.
Stack: TypeScript, React + Tanstack, PostgreSQL, Supabase, AI pipelines. Competitive salary and significant early-stage equity
You: Early startup experience, willingness to hustle, love for product, comfort with ambiguity & startup pace
noah@bevyl.ai
Cosuno is a fast-growing tech startup reshaping the construction industry with a digital platform for procurement. We use AI to analyze millions of price points, helping construction companies create bids based on real market data. We're looking to expand our team with creative minds who want to solve real-world problems and impact a massive industry. We are an open-minded, collaborative, and international team.
Currently, we're hiring for two key senior roles:
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Senior Full Stack Developer (TypeScript)
Location: Remote (EU) / Berlin
Stack: TypeScript, React, Node.js, Cypress, Kubernetes, AWS
Mission: Take full ownership of features, shaping both the frontend and backend of our product. You'll have the responsibility to extend and build upon our platform to make it more valuable, reliable, and maintainable. We value a trunk-based development workflow with daily releases, comprehensive end-to-end testing, and a solid CI/CD pipeline.
You have: 5+ years of hands-on engineering experience, substantial expertise in JavaScript/TypeScript, and experience with Node.js (React is a plus).
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Senior AI Engineer – LLMs & Agents
Location: Remote (EU) / Berlin
Mission: You will build agentic workflows using state-of-the-art LLMs. Lead the technical development of an agent that helps construction professionals process, improve, and validate complex construction documents. A key part of your role will be establishing and enforcing MLOps and LLMops best practices.
You have: 5+ years of engineering experience, with at least one year working with LLMs. You possess strong Python skills, a proven track record of deploying containerized services (Docker, Kubernetes), and deep expertise in at least one of the following: deep learning (PyTorch, Transformers), ranking/matching algorithms, or LLMops (RAG, evals, fine-tuning).
Interested? To apply and for more detailed information, please see the full job descriptions on our careers page: https://www.cosuno.com/en/company
We are looking for passionate individuals for whom programming is not just a job but it’s something they love to do. We're obsessed with computers, programming, big data, databases, compilers, hardware, math, data science, and the internet. Does this sound like you? Please apply to join our team.
Our code base is very friendly to new contributors. You'll have a fully-functional development environment within hours (fully automated) and be pushing commits on your first day. Deployments to production happen multiple times per day and finish in less than 2 minutes. Effectively all of our codebase is written in Python, Rust, SQL, Javascript/TypeScript, and Nix. The core technologies you'll need familiarity with to be productive are Python, PostgreSQL, Linux, and Git.
We operate at a larger scale than typical startups. We operate two datacenters with high performance servers we've built that are capable of dealing with the volumes of data we process. We've implemented our own distributed file system. We do full-scale web crawls. We download and perform static analysis on the entire universe of Android APKs and iOS IPAs that are published. Unlike a typical startup where you'll spend half of your time in meetings, and the other half fixing bugs from Jira tickets— at MixRank you'll get to challenge yourself with difficult technical problems that will help you to grow as an individual.
We're hiring continuously for the positions below— they aren't singular positions that will close once filled. Our philosophy on hiring is that the candidate is more important than the position. For each new member of the team, we design a custom role and responsibilities that are specialized to their interests. Other companies will come up with a long list of specific requirements for a position with the expectation that you'll exactly replace someone from the team, or that you'll be the perfect tetris piece that satisfies the job requirements decided by a committee. MixRank is more pragmatic: we'll first get excited about having a unique individual on the team, then we'll figure out the best way to accommodate their specific talents.
-- Junior Software Engineer - Remote (Global), Full-Time
We're looking for remote junior engineers that have 0-3 years of professional experience in software, and 5+ years of curiosity exploring computers, programming, and technical hobby projects. This is an open-ended entry role with mentorship and diverse opportunities to work on all areas of our product: databases, distributed systems, infrastructure and tooling, data analysis, machine learning, frontend/backend web development, APIs, data mining, data modeling, and more. To stand out, please highlight what makes you unique: passion for computing, curiosity and side projects, work ethic, niche research, etc.
Ideally you've already graduated, but if you still have one or more years left of school, please feel free to apply anyway, and if you're the right fit for the team we'll figure out a way to accommodate your schedule. https://www.ycombinator.com/companies/mixrank/jobs/Fnwsojk-j... --
Software Engineer - Remote (Global), Full-Time
We're hiring generalist software engineers to work on web applications, data mining, machine learning/data science, data transformation/ETL, data modeling, database scaling, infrastructure, devops, and more. We'll cater the role to whatever subset of these areas match your interests.
Beneficial experience includes PostgreSQL, Python, Rust, Linux, TypeScript, Nix, frontend/backend web development, and data mining.
https://www.ycombinator.com/companies/mixrank/jobs/RXQspen-s...
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I’m Kiran, Chief of Staff (CoS) at MixRank, a fully remote data startup building go-to-market intelligence. We’re US-incorporated but hire globally, and we’re bringing on new teammates to join a fast-moving team with real ownership and impact.
Marketing Lead (Developers) - Remote friendly | Tech Lead (CI & Test Data Platform) - San Francisco| Senior Platform Engineer - San Francisco | DevRel Engineer - San Francisco|
Trunk is an a16z funded (25M) Series A dev tools startup, redefining software development at scale. At Trunk, our mission is to help teams create high-quality software quickly. We've helped engineerings teams at: Google X, Zillow, and Brex to understand why their builds fail, which tests are flaky, and how to ship code faster without sacrificing reliability. AI has made writing code 10x faster, but shipping is still painfully slow. The bottleneck has shifted downstream - to merge conflicts, flaky tests, inconsistent code quality, and dozens of other frictions that drain productivity and morale. Engineering teams that can stay focused on designing, implementing, and delivering software will build magical, high-quality projects - and they'll be happier doing it. We're building a CI Reliability Platform that empowers teams to land code faster and develop happier!
Our products:
* Merge Queue: Ensure your PRs keep the builds you care about green at any scale. *Flaky Tests: Detect and eliminate Flaky Tests. Our tech stack: Frontend: Typescript, React, Next.js, AWS Backend: Typescript, Node, AWS Data pipelines: Dagster, Python, polars CI/CD: GitHub ActionsUnlimited PTO (and we all actually take PTO), competitive salary and equity packages! Please apply here: https://trunk.io/jobs
Company: We're a small scientific software development company that develops custom scientific and engineering analysis applications in domains including: space situational awareness (monitoring the locations, health and status of on-orbit satellites), image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML including physics-informed neural networks (PINN), human body thermoregulation, computer vision and image processing, high performance computing (HPC), computer aided design (CAD), and more. All exciting applications and no CRUD. We emphasize high quality code and lightweight processes that free software engineers to be productive.
Experience: Except for interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field. Masters or PhD is a plus. (Roughly 25% of our staff have PhDs.)
Technologies: Mostly C++23, Qt 6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and analysis projects use Python and C++. Some projects use Java or Typescript/React.
Apply online: at https://www.stellarscience.com/careers/.
Role: Develop and implement infrastructure upgrades, database tuning, Kubernetes and Helm orchestration, monitoring, and security. Help maintain and improve our large-scale Rails monolith, including CI/CD. Participate in on-call rotation and help automate daily DevOps tasks.
Stack: MySQL/PostgreSQL, ScyllaDB, Redis, ElasticSearch, Terraform, Google Cloud, DataDog and more.
Applications: Rails, Vue.js/Typescript, Rust
Perks: Paid time off (2 weeks vacation, 5 statutory holidays, 2 weeks at Christmas, 4-day summer workweeks), annual company retreat, anniversary gift ($200/year), monthly music subscription reimbursement, fully paid maternity & paternity leave.
About Us: FetLife is the largest kinky social network with 10M+ members, 100% word-of-mouth growth, and billions of daily requests.
How to apply: Email jointheteam+do+hn@fetlife.com with a brief introduction, 2–3 favorite projects, GitHub/GitLab link, and LinkedIn profile or resume (PDF).
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Senior Product Manager | Full-Time | Remote | $140k - $200k USD - https://fetlife.com/jobs/product-manager
Role: Understand member needs, craft detailed product pitches, drive discovery, reduce friction, own product metrics, and guide strategy to deliver meaningful value across our large-scale platform.
Perks: Paid time off (2 weeks vacation, 5 statutory holidays, 2 weeks at Christmas, 4-day summer workweeks), annual company retreat, anniversary gift ($200/year), monthly music subscription reimbursement, fully paid maternity & paternity leave.
How to Apply: Email jointheteam+pm+hn@fetlife.com with a brief introduction, 1-2 examples of measurable product impact, and LinkedIn or resume (PDF).
https://jobs.gem.com/piqenergy/am9icG9zdDp5j21vRWEpgIUq005H6...
Piq Energy builds software that helps renewable and large-load developers get projects connected to the electric grid faster. We automate grid interconnection studies and planning workflows.
You’ll own features end-to-end: interactive frontend, backend APIs, data pipelines, AI agents, and power systems simulation workflows. We’re looking for experienced generalists who like ownership, real-world impact, and scaling startups.
Stack: Typescript, Svelte, GraphQL, Mapbox, D3.js, Python, LLM agents, Postgres, workflow orchestration
Clever Benefits is hiring a Senior Full Stack Software Engineer to help build and scale our platform. You’ll ship end-to-end features across a React web app, React Native mobile app, Node.js/TypeScript backend, and AWS infrastructure. Small team, high ownership, production focus.
Stack: TypeScript, React, React Native, Node.js, Prisma, PostgreSQL, tRPC, AWS (Lambda, ECS/Fargate, S3, RDS), CI/CD.
Requirements: 8+ years experience; strong TypeScript; production React + React Native + Node; solid AWS background; Prisma/Postgres/tRPC; comfortable owning features from design → deployment. Must live within 30 miles of North Scottsdale and be able to be onsite 2 days/week.
Nice to have: TestFlight/Play Store workflows; monorepos (pnpm/bun workspaces); IaC (CDK/Terraform). Interest in using AI to accelerate development (codegen/automation) — with an emphasis on maintainable, high-quality engineering.
How to apply: Email your resume + a short note (and links/GitHub if you have them) to sal@cleverrx.com with subject “HN — Senior Full Stack Engineer”.