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:
- Support Engineer (junior-mid): https://www.notion.so/commonprefix/Opening-Support-Engineer-...
- 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).
---
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”.