CoVar | Durham, NC | https://covar.com/ | Full-time | ONSITE
CoVar is a small R&D company specializing in machine learning and software development for defense and healthcare. We're looking for a jack-of-all-trades who can: prototype computer vision algorithms, build Python web services, wrangle large sets of data from disparate classes of sensors, ... any or all, with the only hard requirement being eagerness to learn.
Visit covar.com for more information on our current openings!
Axle Health | https://www.axlehealth.com/ | Backend Python/Django - Interoperability Node/Typescript | ONSITE: Santa Monica (5 days)
Axle Health builds scheduling and workforce management software to empower in-home healthcare providers to deliver exceptional, personalized care right where patients feel most comfortable—at home.
Hiring: hands on builders who thrive on in person collaboration. Ideal Senior SWE candidates have 8+ years of experience working with complex mission critical platforms.
Better Stack | https://betterstack.com/ | /^Full-?stack Engineer$/i | Remote (North America & Europe)
We are software builders at :heart: CEO is a software engineer, COO is a software engineer, and you guessed it, CTO is an engineer, too. We are engineers, making the tools we always wanted. If you love building amazing software, you're at the right address.
We are looking for software engineers who, given enough time, could build Better Stack on their own = looking for full-stack product engineer generalists to help us create high-quality software with exceptional UX, end-to-end.
Apply at https://betterstack.com/careers/fullstack-engineer
How we operate: https://betterstack.com/careers – https://betterstack.com/careers/engineering – https://juraj.blog/
yeet | Chicago, IL / Remote | Full-Time Building a dynamic runtime on top of the Linux BPF sub-system. Looking for extremely talented / passionate Rust developers / Backend Engineers with a deep interest in Linux internals, Distributed Systems, Dev Tools, Great Developer Experiences and Systems programming.
Experience working with distributed systems AND / OR writing highly-concurrent, performant multi-threaded Rust is a must.
Feel free to tell us all about your favorite GNU core utilities / Linux system calls / kernel sub-systems at: work [at] yeet.cx
You can visit us at https://yeet.cx/
Or try our interactive sandbox at https://yeet.cx/play
For more jobs check out https://yeet.cx/careers
Alembic | SF (5 days onsite) | SRE • C++ AI • Backend Python • Data Engineering
We melted GPUs chasing Causal AI — now we run one of the world's fastest private supercomputers, the only non-Fortune 500 company on earth operating one. Patented causal math, proving what actually drives revenue for the world's best enterprises.
Hiring: SREs to run our supercomputer, C++ engineers for AI systems, data engineers for enterprise-scale pipelines, and backend Python engineers for the platform.
Customers: NVIDIA, Delta, Mars. $145M Series B. Hiring SREs, C++ AI, data, and backend Python engineers.
Kadoa | Web Scraping / Software Engineer | Remote | Full-Time | https://kadoa.com
Kadoa is the web data layer for finance. We use the best coding agents to produce the most accurate web datasets, so the leading investment firms can make faster and better decisions.
All founders have spent years in the trenches writing web scraping and ETL code and still do it almost every single day. We are growing fast, have a drama-free and distraction-light environment, and try to minimize the distance between the code & data you ship and the customers who use it.
We are looking for people who share our passion for software craftsmanship, web data, and AI.
Open roles:
- Web Scraping Engineer: https://www.kadoa.com/careers/web-scraping-engineer
- Senior Software Engineer: https://www.kadoa.com/careers/senior-software-engineer
If that sounds like you, please email me at (adrian at kadoa dot com) and mention HN in the subject line.
Relevant Healthcare | Software Engineers (multiple levels) | Remote (US/Canada) | Full-time
Relevant builds a data platform that helps safety-net healthcare providers deliver better care using data from their electronic health records. Our customers are non-profit clinics called Community Health Centers. You can read more about them, us, and the roles on our jobs page: https://relevant.healthcare/jobs/
We're a small team (~25 overall). We're bootstrapped (no external capital whatsoever, VC or otherwise) and profitable. We've got a modern tech stack (Rails, Typescript, React, GraphQL, d3) and a healthy approach to both tech debt and work/life balance… and we’re also a very nice group of people that get to work on interesting problems for some of the few unimpeachably good actors in healthcare!
Foxglove | Multiple eng + GTM roles | Onsite (San Francisco) + Remote (Europe)| Full Time | https://www.foxglove.dev/careers
We build developer infrastructure for Physical AI. Robotics and embodied-AI teams run their data flywheel on us: visualization, multimodal logging (MCAP), search and curation, observability, eval, and fleet management. Stack is Rust on the backend and data side, TypeScript with WebGL and WASM for visualization, Python for ML and eval.
Series B, ~80 people, backed by Bessemer, founded by Cruise and Coinbase alumni. AV or robotics experience is a plus, not a requirement.
Open roles (Senior/Staff):
- ML Engineer
- Product Manager, Data + ML
- FDE, Europe
- Design Engineer
- Account Executive (Defense and Aerospace)
All roles and apply: https://www.foxglove.dev/careers
Questions: email in profile (mention HN)
ParadeDB (YC S23, https://paradedb.com) | Database Internals Engineers, Distributed Systems Engineers | Remote or hybrid in San Francisco | Full-time
ParadeDB is a Postgres extension that delivers state-of-the-art search in Postgres. Our customers, including Alibaba Cloud, BILT Rewards, Modern Treasury (YC S18), and many others, rely on us to deliver the performance and feature set of dedicated vector databases/Elasticsearch natively in Postgres, simplifying their stack and day-to-day operations.
If you like systems, this might be for you. We're a team of 10, a Series A company based in SF but distributed across North America. We're hiring for database internals work (e.g., building the database in Rust) and distributed systems work (e.g., building the database-as-a-service platform in Go).
We're open-source at https://github.com/paradedb/paradedb.
Our technical blog: https://www.paradedb.com/blog
More info on roles: https://paradedb.notion.site/
Scholarly | Senior Software Engineer | Seattle, On-Site | Full-Time | $160k - $200k + equity + health benefits + equipment budget
Scholarly is building the HR operating system for higher education. We've built a software platform that enables our customers to make data-driven decisions and to automate essential processes like performance reviews, tenure processes, leave workflows, and more. We are a venture-backed seed stage company of experienced, motivated, and collaborative folks. We are backed by leading investors in the industry and working with some of the best universities in the US. The team comes from Gusto, NASA JPL, Amazon, Outreach, and others.
We're looking for a full-stack candidate with 8 or more years of experience building web applications. We write Ruby and Rails, but we are considering candidates with other stack experiences. Engineering is based in Seattle and on site in Pioneer Square. Looking to get back to a collaborative, in-office culture post-COVID? Let's chat.
If interested, please apply here: https://jobs.ashbyhq.com/Scholarly/d4c84468-fd4b-4dd7-9b22-2...
Nova Credit | Remote (US, Canada)
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 Senior to Staff, Engineering Manager, Product, Design & Analytics roles.
-> 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.
Caplight | caplight.com | Backeind/Fullstack Engineer | Full-time | SF | $225k-$350k + equity
Caplight is a profitable fintech company reimagining the private markets. We build data, trading, research, and workflow tooling for VCs and other private company investors. We're closing a Series A on the back of strong success with our current platform which focuses on helping late-stage VCs track realtime pricing on pre-IPO companies like Anthropic, Stripe, SpaceX, etc. Our goal over the next year is to build powerful agentic workflows to automate large parts of the VC ecosystem.
Looking for product-minded AGI-pilled engineers. If interested, email me with a short description of your background and why you believe you're right for the role: justin at caplight.com (if you write your email with AI I will not read it)
Small prop-trading firm | Senior Software Engineer | Onsite | Paris, France | Full-time | Competitive comp
Hi HN, we're a small (currently 7 people) proprietary trading firm focused on prediction markets & sports. If you love great software, sports, maths and want lots of ownership - come join us! Ideally, you have experience in software engineering for quant finance, but this isn't a hard filter.
Apply by emailing draftpicks[at]kairos-research.ai with a quick line on why this interests you and a CV/Github.
Guac (YC S23) | guac.com | Backend/Fullstack Engineer | Full-time | NYC | $150k-$250k base + equity
At Guac, we’re building the first agentic AI platform for grocery. Today, we work with enterprise supermarket chains to forecast demand and help them optimize their inventory operations.
We’ve scaled to 7 figures ARR, and we’ve raised $7.2M from YC, Collab Fund, 1984. We're looking for talented engineers in NYC to join our mission: to solve grocery food waste and tackle food insecurity with technology.
Key technologies: Python, FastAPI, Dagster, Dagster, Dask, React, Next.js, TypeScript
More details/application:
Backend: https://www.linkedin.com/jobs/view/4414605553/ Fullstack: https://www.linkedin.com/jobs/view/4414608482/ Or email us directly: jack@guac-ai.com
Subtle Medical | North America | Full Time | Remote | https://subtlemedical.com/
Subtle Medical is a global leader in AI-powered medical imaging, using deep learning to enable faster, safer, and smarter scans. Our technology helps healthcare providers deliver high-quality imaging more efficiently—reducing scan times, improving image quality, and expanding access to care without the need for new hardware.
We are on a mission to transform the imaging experience for both providers and patients. By building responsible AI solutions that integrate seamlessly into existing workflows, we help radiology teams operate more efficiently while improving the patient experience—especially for those who struggle with long or difficult exams. Our vision is a world where every patient has access to timely diagnosis, high-quality care, and better health outcomes.
Subtle Medical offers a robust, multi-modality portfolio across MRI, PET, and CT, and continues to invest heavily in research and development. Our team includes leading radiologists, scientists, and engineers from top institutions such as Stanford, Harvard, and MIT, as well as industry veterans from GE, Philips, and Siemens.
Recognized by TIME as one of the World’s Top HealthTech Companies (2025) and named to CB Insights’ GenAI 50, Digital Health 150, and AI 100, Subtle Medical is helping shape the future of medical imaging. Today, our solutions are deployed on over 1,000 scanners worldwide, supporting hospitals and imaging centers in delivering faster scans, improved diagnostic quality, and better patient care.
We are hiring:
Senior Platform Engineer: https://subtlemedical.com/careers/senior-platform-engineer/
Machine Learning Software Engineer: https://subtlemedical.com/careers/machine-learning-software-...
JustPark | Lead Engineers | London (Hybrid) & Dallas (Hybrid) | Full-time
JustPark is a parking platform serving millions of drivers and operators across the UK and US. We're hiring two lead engineers.
Lead Full Stack Engineer – London, UK React/TypeScript + PHP/Laravel/Go. Lead engineers across our consumer platform, contribute to architecture, and help us scale internationally. 5+ years across the full stack. We welcome applications from seniors wanting to step into a lead role. Apply: https://apply.workable.com/justpark/j/6016D774E3/
Lead Engineer, Oobeo Platform – Dallas, TX Player-coach role: Django/Python, React, React Native, AWS + GCP. You'll own the codebase and manage the team. Strong AI-paired development culture — we're daily Claude Code users and want someone who'll bring the team along. 8+ years backend experience. Apply: https://apply.workable.com/justpark/j/48D1D405D8/
If you're applying from HackerNews, please mention it in your application!
Fusionbox | Python + TypeScript Engineers | United States | Full-time | REMOTE (US)
We're a software engineering consultancy that builds enterprise software the right way. We negotiate the right to open source all our client code, maintain a handful of popular libraries, and our engineers contribute to Django core. We sponsor PyCon, DjangoCon, and Django Girls because we're invested in the ecosystem we build on.
We're looking for software engineers who value software design, system architecture, and collaboration. You should be strong in most of these areas: web application security, relational database design (PostgreSQL query plans, indexes, and constraints, not whatever the ORM emits), Django internals, React, and distributed systems. What you'll actually work on: complex state machines for financial workflows, multi-tenant architectures with row-level security, custom database functions when the ORM isn't enough, and React frontends that handle real-time data without being a mess of useEffect race conditions.
A note on how we work: we think deeply about the systems we build, and we believe understanding comes from doing the work yourself, not from handing it to a model. If you ship code you don't understand, we're genuinely not a fit, and that's fine. If that paragraph made you nod, we want to hear from you.
We're a small team where you'll own features end-to-end (database design to React components) and have opportunities to shape technical decisions. You'll work with a team that practices empathy and values work-life balance. If you've ever wished your job involved more elegant state machines and fewer marketing landing pages, let's talk: info@fusionbox.com.
Caribou | Toronto| Full Time | Hybrid (one day in office) | https://www.caribou.care/ Caribou helps homecare organizations attract, engage, and retain staff through data-driven recognition, rewards, and coordination tools that make the lives of patients and their caregivers better. We're a small company of ~50 people who are mostly based in the GTA.
We are building on our core product such as deploying AI-powered agentic systems that work alongside agency coordinators to handle routine coordination, outreach, and administrative workflows to improve agency operations.
We are hiring:
Senior Software Engineer: https://caribou.breezy.hr/p/66f1f5c2f30f-senior-software-eng...
Staff Engineer: https://caribou.breezy.hr/p/e1a6bd516d2f-staff-engineer
Chestnut | Senior Product Engineer | SF or Seattle (Hybrid) | https://jobs.ashbyhq.com/Chestnut
I'm Nick, CTO & co-founder. We're Rippling, but for insurance carriers paying their sales force. Every policy sold triggers a chain of payouts across brokers, agents, and sub-agents. Today that runs on spreadsheets and legacy vendor systems and tomorrow they'll run on Chestnut. Nationwide and other major carriers have already made the switch.
Revenue is up 8x in the last year. We're backed by a16z. Founding team came out of leadership at Ethos (insuretech that recently IPO'd in January).
The work is state-heavy and correctness-critical: payouts that must reconcile with finance to the cent, dynamic agent hierarchies, retries, chargebacks, partial failures. These systems move real money and cannot drift.
You'll design schemas, build backend logic, ship UI, deploy, and own the sharp edges that show up with real enterprise customers.
Stack: Go, TypeScript/React, Postgres, Temporal, Kubernetes, AWS. We use AI aggressively and expect you to as well.
We're looking for 3–6 years on real product systems. You're thoughtful about invariants and failure modes.
Apply: https://jobs.ashbyhq.com/Chestnut
Email me: nick at chestnutfi.com
PrairieLearn (Remote US) — Full-Stack Software Engineer — TypeScript / Postgres / React / AI
PrairieLearn (https://www.prairielearn.com) is an open-source assessment platform used by universities across the US (Berkeley, Princeton, Michigan, Illinois, and others). We power mastery-based learning and large-scale exams.
We’re a small, profitable, early-stage company (bootstrapped, no VC) that is growing quickly. Our users love us and we have very high retention and rapid spread through word of mouth. As an early-stage hire, you’ll work across the stack and enjoy meaningful ownership from day one.
Tech we use: Node.js / TypeScript backend, Postgres, AWS, React. We’re also developing AI tooling, including building LLM agents to help instructors create content and using vision-language models to help grade student work. PrairieLearn is open core: https://github.com/PrairieLearn/PrairieLearn
Details:
- Location: Remote (US only)
- Salary: $100k-$140k depending on experience
- Benefits: Stock options (0.5% - 1.5%), unlimited PTO, flexible hours
- Role: Full-time. (We’re not able to sponsor visas at this time.)
Apply at https://www.prairielearn.com/jobs-ashby?ashby_jid=ee6fdbc3-1...