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
We are a team of entrepreneurs, decarbonisation experts and tech enthusiasts who believe in purpose-driven innovation. We are building a maritime carbon exchange as an engine to commercialise maritime decarbonisation.
In just 2.5 years of existence, we have made history in launching the first regulatory carbon exchange index, capturing 10% of the global market, 50% of SOM, getting awards and being featured in top maritime newspapers. The team grew from to 22 this year. Metrics wise, we are revenue-generating, close to breaking even and approaching series A.
Looking fora backend heavy full-stack developer, 5+y experience in python , fastapi, drf, docker, GCP, terraform. frontend react, redux, zustand, tailwindcss (chakra ui, or shadcn - similar libraries)
Position: remote, CET (+-2h) Type: contract Process: call with the founder and head of engineering, tech test, offer
Apply:: gordana.ilic@bettersea.tech (add HN in subject line)
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
• Senior Full Stack JavaScript Developer ($125-200k USD): Modern tech stack—React, Node.js, Next.js, and Azure. Individual contributor on a small team with no mentoring duties and a 4-day work week.
• Product Designer and UX Researcher($120-180k USD): Hybrid design and research role. 4-day work week
• Technical Product Manager ($150-225k USD): Business-minded ex-engineer with SQL, analytics, and integration skills. 4-day work week
APPLY –> https://stack-influence.breezy.hr/
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
We're building an AI notetaker and task management tool for financial advisors. Startup is headquartered in NYC. If you're not in NYC, quarterly travel to the office is expected.
Front end: React DB: Postgres APIs: Golang, Elysia/Node Infra: AWS ala Terraform
Interview Process 1. 10-minute async coding challenge 2. Hiring manager chat and 20-minute coding challenge 3. 45-minute Coding Challenge w/ another Engineer from the AI team 4. System Design Interview 5. Chat w/ a Product Manager
Apply here: https://avantos.breezy.hr/p/4a707ef4f952-senior-software-eng...
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...
Upwave is a YC/venture-funded startup that helps large enterprises plan, measure, and optimize brand advertising campaigns using advanced analytics and AI. We offer a comprehensive set of tools that help our Fortune 500 clients understand and improve how they're perceived in the marketplace, how aware consumers are of the value they provide, and how much consumers trust them to provide the value they promise.
Our platform leverages AI to deliver deeper insights, automate complex analysis, and help marketers make data-driven decisions faster. We've been rapidly expanding our list of enterprise customers and deepening our integrations with "household name" partners. As we grow, we need engineers to help us build even more unique, differentiated, valuable, scalable, and robust analytical SaaS tools and products.
About the Role: Upwave is a startup and we need an experienced generalist "startup engineer" who's experienced doing the wide variety of technical work that modern SaaS startups need. That includes backend web development (JVM frameworks), frontend SPA development (mostly React), AWS-based cloud engineering, data engineering, and working with AI/ML capabilities to enhance our analytics platform.
Our team emphasizes high-quality, high-velocity, sustainable software development in a collaborative and inclusive team environment. We're a small team that gives our engineers a lot of autonomy, and we want people who are excited to step in and learn whatever's needed to get the job done (whether that's new technical skills or business domain knowledge.)
If interested, email me: jason.kelly@upwave.com
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
We are an AI-driven Hospitality Tech platform helping vacation rental owners automate their revenue on Booking.com. We are bootstrapped, profitable (£100k ARR), and growing month-on-month.
We are looking for a Founding Engineer (Python/Django) to partner with us (2 founders) and scale our infrastructure. This is a fullstack role (React) involving high-volume scraping, browser automation & agents.
- Stack: Python, Django, Postgres, React
- Challenge: Enterprise-scale scraping (1000s req/s), reverse engineering, and AI agents.
- Deal: £70k - £90k + Up to 2% Equity.
We are currently raising a round at £5m valuation with top VC's.
Apply here: https://www.mydatavalue.com/founding-full-stack-senior-engin...
Or email me your cv: martin@mydatavalue.com
I’m the Director of Engineering at Farmgirl Flowers, an online flower shop with a loyal customer base. We're looking for a product-minded engineer who can own projects end-to-end and keep things simple, safe, and maintainable.
We're a small team of three, so communication is fast and your impact will be immediately visible. We value pragmatism over "perfect" - shipping useful solutions matters more than polishing forever.
Stack: Rails 8, MySQL, Heroku, AWS, a little React -> moving toward Hotwire.
Email me at ignacy [at] farmgirlflowers.com to know more!
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...
Location: Remote (US) Remote: Yes (US Only) Willing to relocate: No Technologies: Python, FastAPI, React, Supabase, GCP, LLMs Résumé/CV: https://www.ycombinator.com/companies/helpcare-ai/jobs/Hjx9n... Email: Apply via link above
Description: Careforce AI is building autonomous AI agents that eliminate the manual administrative burden in healthcare (fax machines, scheduling, calling). We find, call, and schedule patients, breaking interoperability barriers that have plagued the industry for 40 years. We are a well-funded, YC-backed company with massive customer demand.
We are looking for a Senior Fullstack Engineer to be a foundational member of our small, ambitious team. You will have significant ownership working across the stack to build and scale the core of our AI agent platform. We are looking for builders with 5+ years of experience, preferably with an early-stage startup background (Pre-seed to Series A).
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.
We're Hiring at Adalat AI: Join Us in Building the Future of Justice
Adalat AI is on a mission to transform India’s judicial system with cutting-edge AI — reimagining courtroom workflows from transcription to summarization, just as UPI transformed payments and Aadhaar revolutionized identity verification. Deployed across 10 states and recently launched at the Delhi High Court, our platform is backed by global foundations and built by a team with roots at Harvard, Oxford, MIT, and IIIT-Hyderabad.
Roles:
- 2 X Fullstack Engineer (5+ YOE) – Own end-to-end feature delivery across React/Next.js, Go services, with Postgres as your database: https://www.adalat.ai/careers/full-stack-engineer
- Full stack Lead Engineer (10+ YOE) - Own technical leadership, mentor engineers, set technical roadmap of several of our products: https://www.adalat.ai/careers/lead-engineer-full-stack
Why Adalat AI?
- Mission-driven: Your work has real-world impact—helping untangle India’s court backlog, improving access to justice for millions.
- Remote-first: Work from anywhere.
- Unlimited PTO: Yes, seriously.
- Unique environment: Co-design with judges, legal experts, and researchers. Publish, learn, grow. We value tech, law, and impact equally.
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...
Flutter/Shorebird founder here. Flutter is used by millions of devs (and nearly ⅓ of free apps submitted to AppStore), but is missing services for businesses. We offer Flutter-related SAAS used by 1000s businesses globally, on track to profitability early 2026.
As part of our over-the-air updates “code push” product, we’ve built a custom compiler and runtime for the Dart language, primarily written by me (founder/CEO). We need a fulltime engineer to take over primary responsibility for all of our C++ code (Dart & Flutter forks, custom runtime, compiler, etc.) and evolve it further than I could alone. You don’t need to be a compiler/runtime expert. You do need to be capable of working on large open source projects, be comfortable with C++, want to work at a startup, work well independently (we’re remote) and want to learn and work on lots of different areas of code. If you’ve contributed at least a little to WebKit, Godot, Firefox, or any other open source project and are at least compiler/runtime curious, you will likely find this role extremely rewarding.
For our second role: we serve 10s of millions of devices daily from our cloud, (2k+ RPS sustained), built mostly in Dart on Google Cloud + CloudFlare. We’re in the process of launching a CI product and have a lot of cloud development work ahead of us. You need some cloud experience, want to work at a startup, and be willing to work in Dart (what our customers use).
We’re a small, senior team, making something people want. Tech: GCP, Cloudflare, React, Dart, C++, Rust. Shorebird operates almost entirely in the public over Discord. https://discord.gg/shorebird
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...
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
We're building automation software for the $7T insurance industry, accelerated by AI. Seed stage in terms of headcount (~ 20 people) but Series B in terms of business traction (+ cash-flow positive). We've intentionally stayed under the radar.
- Product has caused customers to literally cry tears of joy
- Experienced eng team from Airbnb / Brex / LiveRamp
- Stack: TS, Postgres, React, GraphQL, and Next.js
Apply here: https://comulate.com/careers
Tamarind hosts AI drug discovery models for biotech/pharma researchers. We’re building the infrastructure to power R&D in pharma companies and enable them to harness the latest advancements in computational biology, such as molecular ML models like AlphaFold.
We're hiring engineers who are excited to scale GPU inference, design intuitive applications for scientists, and build secure enterprise-grade software. We’re a series A company started 2 years ago, and have 10x’d revenue within the past year. We’re used by 7 of the top 20 pharma, dozens of biotechs, and tens of thousands of scientists. We’re hiring for a variety of engineering roles, including generalist software engineers and infrastructure engineers. We value ownership, moving quickly, and a focus on customer needs.
Stack: AWS, Python, React, Javascript, Kubernetes
Apply here: https://www.ycombinator.com/companies/tamarind-bio/jobs or email me at sherry@tamarind.bio.
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.
Cancer patient support and education nonprofit needs experienced full-stack dev for meaningful 10-12 week contract.
PROJECT: Build secure, mobile-friendly front-end for Airtable database with SSO integration (Hivebrite), (potentially) HIPAA-compliant AWS hosting with BAA, and PDF export functionality.
STACK: Your recommendation (we prefer React/Vue + Node.js/Python, AWS with HIPAA compliance)
REQUIREMENTS: * HIPAA-compliant app development experience * SSO/IdP implementation * AWS with Business Associate Agreement setup * Airtable API integration * Clear communication with non-technical stakeholders
SCALE: Small, includes de-identified patient information, straightforward data interface
WHY IT MATTERS: Help cancer patients find treatment options that could extend their lives.
Details here: https://docs.google.com/document/d/1Z8fWTmDHJndBDH11sz8_707B...
Aha! is the #1 tool for product managers to plan strategy and roadmaps. We serve more than 700,000 users worldwide. We are looking for:
* Experienced Rails security engineer to work on the Aha! product. Our application is built in Ruby on Rails, with React on the frontend for rich client-side experiences.
Aha! is profitable, you can work from anywhere in North or South America, and we offer excellent benefits. We use our own product to manage our work (which is especially rewarding) and we deploy continuously.
Our entire team has always been 100% remote - in North American timezones so we can collaborate during the work day.
We’re building Topliner, an AI-powered platform for executive search.
What you’ll work on: - Integrations with Loxo, Metaview, GetSales, Calendly - API design, background jobs, and sync pipelines - Auth flows, queue processing, caching - React+TS interfaces
Requirements: - 5+ years fullstack experience - Strong Node.js, Laravel/PHP, React+TS - API integrations, OAuth, async jobs - Understanding of scalable systems and data pipelines - Fluent English
Compensation: - $80k/year - Remote - Part-time → full-time path - Equity potential
Apply here >>> https://topliner.app/careers
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
Rainbow is a tech-enabled small-business insurer. We built software that underwrites small businesses (starting with restaurants) and evaluates them against various risks to provide them with insurance policies. We've been live for only 2.5 years but already one of the top insurers of restaurants in the US. We are looking for an experienced software engineer to join our team and help us grow and innovate. We've raised around $20m to date with a series A around end of 2024. We've grown massively over the past year. Most of our problems we're currently working on are about building tech as we expand out to other categories of insurance and insuring other types of businesses.
Job Requirements:
- 5+ years of professional experience as a software engineer
- Experience in fintech is an optional but major plus
- Familiarity with our tech stack (Golang, React through a Next.js app, GraphQL, PostgreSQL) is beneficial but not required
Why You’d Enjoy Working with Us:
- You're joining a small fast paced team: 12 engineers, 40 people total
- Direct impact on solving real-world problems for small businesses
- Hybrid work model with 2 days on-site in SF
- Competitive salary and benefits
If interested, please reach out at hn@userainbow.com with your resume attached to the email.
You can also visit our site to learn more: https://www.userainbow.com/about
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...
We make robots that autonomously construct buildings. We are currently developing and manufacturing our autonomous bricklaying system in the beautiful centre of Amsterdam. And our robots are already earning real revenue operating on construction sites all over the Netherlands.
We're looking for experienced software engineers for PLATFORM and FULL STACK who can help us solve problems like:
- Data sync and analytics queries across a fleet of robots (that can be offline for hours at a time)
- Rapid deployment and iteration of experimental software changes across firmware, control software and UI
- Modelling buildings in code and finding the right UI for operators to edit them
Check out the progress we've already made on Atrium, our operating system for robotics: https://www.monumental.co/atrium
We're rapidly scaling up operations and we need experienced engineers who can build the systems that manage all of that complexity. If you think that 'full-stack' could reasonably mean debugging firmware, mixing buckets of mortar _and_ writing React components, we are looking for you. Robotics experience not required!
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)
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
Mending is a team of healthcare nerds, software engineers, product designers, direct primary care doctors, health insurance experts, and more. We are building a healthcare system that makes sense, starting by redefining the role of health insurance – one that focuses on reducing friction for doctors and patients, and investing in ways to create more meaningful doctor-patient relationships.
* Product Engineer: https://www.mending.com/careers/product-engineer
We’re looking for a motivated and impact-oriented Product Engineer to join our small team of 5. Your primary focus will be building data pipelines and backend systems that automate and improve workflows for patients, providers, and internal operations.
You will be instrumental in ensuring seamless interactions from efficient patient support and operational workflows to reliable payment processing, which are powered by the robust systems you design and implement. As a key contributor, you will partner closely with internal stakeholders and external customers, translating insights into product requirements documents that directly drive your work.
Tech stack: Python (flask, temporal) on the backend, Nextjs/React on the frontend
RecruitiFi is a vendor management platform connecting companies with 20,000+ recruiting agencies globally. Two-sided marketplace, complex workflow automation, integrations with major ATS/HRIS platforms.
Small team. You'll own features from schema to UI.
Stack: Ruby on Rails, GraphQL, React, Next.js, PostgreSQL, Redis. Hiring process: Intro call -> technical interviews (no leetcode) -> founder chat. We respond to everyone.
Looking for: 4+ years building production web apps (or equivalent demonstrated ability), strong Rails or comparable backend framework, modern React, solid SQL.
Fully remote for 7 years, not a pandemic pivot. On-call rotation exists but pages are rare. Twice-yearly team retreats.
Apply: https://tally.so/r/9q9N1G
Medical billing in America is a black box of fragmented data and inefficiency. At CareIgnition, we are building the transparency layer for healthcare. We transform massive, messy datasets into financial clarity for employers and providers.
We are looking for a pragmatic generalist. You’ll be working across the entire stack: from building customer-facing features in React and Django to architecting data pipelines that process petabytes of medical claims and rates. Crucially, this role involves deep algorithmic and analytical work. You won't just move data; you will implement the logic that makes sense of it.
We value "generalist" DNA—engineers who are as comfortable optimizing a SQL query as they are building a clean UI component. If you enjoy solving high-scale data problems that have a direct impact on healthcare affordability, we’d love to talk.
Tech: Python, Django, React, AWS (ECS, Step Functions, Athena), SQL (DuckDB/Polars), Iceberg/Redshift.
If interested, reach to me at vikram.chauhan [at] careignition.com
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.
Gauge helps companies show up in more AI answers. Search traffic is shifting away from Google into AI chat, and companies are figuring out how to adapt right now. Our system delivers real-time analytics derived from millions of LLM answers, while providing an intuitive, powerful UX. We also generate optimized articles to improve our customers’ visibility, and offer an agentic chat interface over their data (think ‘Why was there a spike on 12/10?’ or ‘Which of my pages should I refresh?’).
I'm Evan, the CTO, and we're looking for engineers with strong programming fundamentals, creative problem solving skills, and a high-agency working style. You might be a good fit if you are an ex-founder, ex-founding engineer, or have worked at a Seed/Series A startup.
We primarily use Django, React, Postgres, Celery, and Clickhouse.
Contact me with your resume (and mention HN) if you're interested: evan[at]withgauge.com
More details/JD also here: https://www.ycombinator.com/companies/gauge/jobs/qemTjv7-fou...
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
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.
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.
Lantern is building AI-powered revenue intelligence—think autonomous agents that turn cold outreach into warm conversations. Our platform automatically detects buying signals across your tech stack [1], prioritizes opportunities, and helps B2B sales teams focus on deals that actually close.
We're an agentic-first startup building with Python, FastAPI, Next.js, and React, backed by a modern data stack (Postgres, ElasticSearch, ClickHouse, DuckDB). We deploy on Kubernetes/AWS and use Temporal.io for workflow orchestration.
We're hiring software engineers who want to work on cutting-edge AI and agentic systems. You'll translate complex customer needs into scalable architecture, optimize AI model efficiency through prompt engineering, and ship features that directly impact how revenue teams operate. We value ownership, bold ideas, and people who want to push boundaries.
This role is based in our Manhattan office (4 days/week in-person). We offer full health and dental coverage. Apply here: https://forms.gle/kEi5MDDiaJKdyN3fA
I'm Maksym. If you're excited about agentic AI and reshaping B2B sales, shoot me a note at maksym <at> withlantern.com.
BudgetSimple is a no-code app and site builder for personal finance coaches, creators, and advisors.
We’re growing the platform and looking for: * Fullstack Engineer * UI Designer
Both roles will work directly with the founder on a real, production SaaS used by paying customers.
Fullstack Engineer React, Python (Flask), Postgres Build and ship full features end to end Care about clean code and simple systems Bonus: SaaS, no-code tools, Stripe
UI Designer Design clean, modern, highly usable web app interfaces Dashboards, forms, workflows, design systems Strong product thinking and attention to detail Bonus: SaaS, fintech, no-code products
Both roles are fully remote. We are specifically looking for candidates based in South America, Central America, or Mexico.
Email sam [at] budgetsimple [dot] com with: A short intro Links to work you’ve built or designed
Thanks!
We are building Watchtower Pulse, an AI driven system that lives inside Epic and Cerner to automate DME and discharge workflows. It reads the chart via SMART on FHIR, checks insurance rules, generates complete referral packets, and routes them instantly.
Founder has deep hands on hospital and EHR experience. MVP scope is intentionally narrow and pilot conversations are active.
Looking for a senior engineer with founder mindset who wants true ownership from day one. Healthcare experience is a plus but not required.
Email Kris at watchtowerpulse@gmail.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
We're building business-in-a-box software for landscaping companies, with mobile applications and an offline-capable web app. We're also doing custom AI (_not_ LLMs) to produce measurements from satellite imagery.
Our frontend is in React and React.Native, backend is in Go and Python. We're looking for someone who can lead the backend development and help us manage the data processing pipelines for AI training.
Job posting: https://jobs.lever.co/getduranta/50af551a-9a5c-498c-9729-6f2...
Contact: alex@getduranta.com (please put "HN" in the subject)
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
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/.
Marker is a technology venture from 3 leading communications agencies. We’re an incubator building and launching force-multiplying software products for communications teams.
Our first product is Delve (https://delve.news) — a coverage monitoring, analysis, and insight toolkit to track and measure the entire online conversation about your business or industry.
Our product team is small and autonomous, but with the resources, expertise, and customer access of the global agencies we work with. We’re hiring an early engineer to join us on this journey; you’ll have a large impact on what we build, how we build it, and where we’re going next.
Our current technology stack includes Deno, React, and PostgreSQL. Bonus points for expertise in any of: data visualization, distributed systems, web scraping, large-scale data pipelines.
Contact: dylan (at) company domain. No recruiters or agencies, please.
Pango is building the world's first Agentic Operating System for e-commerce logistics. Our vision is to create the AI e-commerce employee of the future. We are forming our core team in Stockholm and are looking for exceptional engineers. We are based at the SSE Business Lab, where companies such as Klarna, Voi, Budbee or Legora originated. We have achieved a product-market fit and are growing rapidly.
You are a good fit if:
* You are comfortable maintaining, expanding and operating an entire B2B SaaS platform with a high sense of ownership.
* You are happy to take on work that in a large company is divided into a dozen roles, and execute it all at a good enough level.
* You are unafraid of any technology. If we need a desktop app and you haven't done one before, you will study the documentation of Electron.js and build one. If a model for predicting delivery times is needed, you will do a literature review to find the right architecture and train one.
* You have strong proficiency in any backend language or platform, with a strong willingness to dive deep into PHP/Laravel OR strong proficiency in JS/React.
* E-commerce (Shopify, Magento, other platforms, shipping carrier integrations) experience is a plus.
You will take a key role in shaping the product and company, with ability to make an impact and advance career limited only by your aptitude and interest.
Reach out to lukasz@pango.ai if you are interested or have any questions. We review applications immediately and move quickly.
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”.