Fullstory | REMOTE (US), Atlanta USA | https://www.fullstory.com/

Fullstory offers privacy-preserving session replay and analytics for websites and mobile apps. Our session replays are nothing short of magical, and the combination with our automatic analytics creates eye-opening insights.

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Remote (US):

* Senior Manager, Security Engineering - $230~240k USD + up to 20% bonus - https://www.fullstory.com/careers/jobs/110896c1-25d8-4c96-82...

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Atlanta, US (semi-onsite, requiring 1 day per week in office):

* Senior Software Engineer, Web Capture - $145~170k USD + up to 10% bonus - JavaScript/TypeScript, React, Go (golang) - https://www.fullstory.com/careers/jobs/3b8d231f-ae95-4f95-84...

* Senior Data Engineer - $160~170k USD + up to 10% bonus - Go microservices, MCP server, dbt models - https://www.fullstory.com/careers/jobs/20dd3185-3313-4ac3-b1...

* Senior AI Automation Engineer, Finance - $135~145k USD + up to 10% bonus - https://www.fullstory.com/careers/jobs/4480a6d5-231e-420c-a6...

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We have additional roles open in sales and consulting. See the full list at https://www.fullstory.com/careers?utm_source=092xpqyAkV

You can expect regular raises & bonuses, equity, and benefits including: health insurance, 401k matching (Vanguard), annual learning stipend, unlimited PTO, parental leave, and more. I take about 4-5 weeks vacation a year, in addition to ~3 weeks worth of company holidays (federal holidays + the week of Christmas to New Years.)

Additionally, you get a 5-week sabbatical after 5 years of employment - I took mine about a year ago, and it was fantastic.

To apply, please submit your info on the website, and our recruiting team will get in touch with you. If you have questions, feel free to reply here or contact me directly. (I'm an engineer on the iOS team, but I'll do my best to answer questions.)

Riot IQ | Software Engineers, Product Designers, AI Native Fresh Grads | Seattle, WA | REMOTE (US) | Full time | https://riotiq.com

I'm Robert, cofounder of Riot IQ. We're building RIOT IQ, a professional online IQ testing and cognitive assessment platform for psychologists, researchers, clinicians, employers, institutions, and curious individuals.

We're US based and 100% remote. We are hiring software engineers, full stack engineers, product designers, design engineers, and AI native fresh grads.

The most interesting project is building an AI based human intelligence predictor using our in house assessment data. That means working with response patterns, timing data, item performance, scoring, validation, dashboards, model evaluation, privacy, and product UX.

You might work on a variety of things as well but all related to predicting human intelligence.

What matters most to us:

1. Strong product sense 2. Clear communication 3. High ownership 4. Taste in software, design, and user experience 5. Fast learning 6. Interest in AI, cognitive science, psychometrics, or research tools

Useful experience includes TypeScript, React, Next.js, Node, Postgres, Python, data pipelines, ML workflows, dashboards, edtech, healthcare, or research tools.

Compensation is $90k to $180k depending on role and experience, with equity for the right long term hires. Visa sponsorship is not available right now.

To apply, email robertneir@riotiq.com with your resume or LinkedIn, GitHub or portfolio, and a short note on what you would want to build at Riot IQ.

LinkedIn: https://www.linkedin.com/in/robertmneir

We are actively hiring and will reply to applicants.

Obsidian Security | Staff Software Engineer | REMOTE (US) | Full-time | $176k-$196k + equity + 401k | https://job-boards.greenhouse.io/obsidiansecurity/jobs/51527...

We secure the SaaS apps companies actually run on: M365, Salesforce, and hundreds more. You’d be on the Threat product team working full-stack. That means browser extension code (content/background scripts, manifest v3, message passing), backend services chewing through millions of events, and the data pipelines feeding our detection engine. One day you’re in TypeScript debugging why a content script won’t capture form submissions on some vendor’s weird SPA. The next you’re in Python fixing a Kafka consumer that’s falling behind. Sometimes you’re in Rust optimizing a hot path in the telemetry collector.

Big current focus is shadow AI, i.e. catching when employees paste sensitive data into ChatGPT, Claude, or whatever LLM showed up this week. You’d build the systems that detect it.

Looking for ~8+ yrs experience, real browser knowledge (DOM, event loop, SPA routing, CORS, not just “I used React”), prior browser extension work, strong TypeScript, comfortable in Python, willing to write Rust, plus data-at-scale chops (event streaming, Postgres, Elasticsearch, Kafka). Bonus: AI security (prompt injection, exfiltration), detection engineering/SIEM, or security tooling.

Apply via the link above, or see all our open roles at https://www.obsidiansecurity.com/careers

Location: Estonia Remote:Yes Willing to relocate: No

Technologies: React.js,Vue.js, Next.js,Nuxt.js ,TypeScript, SCSS, CSS3, Tailwind CSS, Redux, Zustand

Part-time/Freelance: Yes

Linkedin: https://www.linkedin.com/in/mustafadalga/

Contact info: mustafadalga \[at\] gmail \[dot\] com

Front-end engineer with 7+ years of experience in React/Next.js, Vue/Nuxt.js, and TypeScript. Focused on performance and UI modernization, with results such as improving Lighthouse scores from 50→88 and cutting load times by 80%. Experienced in migrating legacy codebases and mentoring teams, and interested in roles involving dashboard rebuilds, performance optimization, and modernization work.

Prior Labs | Berlin / Freiburg / NYC | ONSITE | Full-time | Multiple Roles | priorlabs.ai

Deep learning transformed text and images but mostly skipped tables, even though they're behind most clinical trials, financial models, and scientific experiments. The reason is structural: no natural sequence, no spatial structure, no shared vocabulary across datasets, so the architectures and scaling laws behind LLMs don't transfer. We're building the foundation-model approach for tabular data. We started with TabPFN. v2 was published in Nature and set a new state of the art on tabular benchmarks; since release we've scaled capabilities ~20x and crossed 3M+ downloads and 6k+ GitHub stars. The hard problems are still open: scaling to millions of rows, low-latency inference, new data modalities, and the infrastructure to run all of it in production.

Open roles: - Senior ML Infrastructure Engineer - own multi-cluster GPU infra (Slurm on GCP today, multi-provider next), training performance, and the tooling layer. We spend tens of millions/year on compute; you own that budget. Train your own architecture if you've got one. - ML Engineer, Cloud Platform - design and scale the backend and infra that serve and finetune the models. Python/FastAPI, Terraform, K8s. - Full Stack Engineer, ML Platform - build the product end to end, data upload through inference. TS + Python, React/FastAPI/Postgres. - Research Scientist, Foundation Model - drive the model agenda: novel architectures, scaling 10K to 1M+ samples, multimodal and causal directions. PhD + top-venue publications or equivalent.

Also hiring: Applied Scientist, Forward Deployed ML Engineer, Developer Relations Engineer, AE, BDR.

30-person team with backgrounds from Google, G-Research, Jane Street, Goldman, CERN. Led by Frank Hutter, advised by Bernhard Schölkopf and Yann LeCun. Comp competitive with top AI labs.

All roles: https://priorlabs.ai/careers

Location: Edirne, Turkey Remote: Yes Willing to relocate: Yes Technologies: Go (Golang), React, MySQL, Python, TypeScript, Docker, Kubernetes, GCP Résumé/CV: drive.google.com/drive/folders/1QS3BpbXu9S_F7P6ORtXOaoy1GZWXYX3j Email: niyazimert039@hotmail.com I have experience building concurrent systems with Go (such as a Concurrent Log Streamer) and full-stack applications with React and MySQL. I am currently leading the GDG on Campus at my university and focusing on Machine Learning and production-ready backend architectures. I am looking for a Machine Learning Developer Intern or Junior Backend role where I can apply my skills in scalable systems.

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.

Apply at: https://www.axlehealth.com/careers#jobSection

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)

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.

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

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.

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...

Radar Labs | Software Engineers (SRE, data platform, backend, full-stack, mobile) | Remote (US), NYC | Full Time | https://radar.com

- 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.

- 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

Everflow | Software Engineer | Montreal, QC | Hybrid (Some on-site) | Full-time

Everflow is a SaaS Partner Marketing platform for managing and scaling revenue from affiliates, partnerships, and marketing channels. We're 10 years in, profitable, no outside funding

The stack : Java, Angular (Typescript), Go, MySQL, Redis. We're a GCP shop and make heavy use of Pub/Sub, BigQuery, BigTable and Kubernetes (GKE)

We're looking for software engineers and / or senior software engineers (at least 3 years) with some hands on experience to join the growing (~15 devs / SREs) team and help us build the product. We don't have a specific profile in mind but you have a track record of shipping, are interested in architecture / care about the craft and are comfortable in a no-downtime environment.

Fluency in french is a hard requirement

Email me directly at everflow-hn@everflow.io

Forward (getfwd.com) | Austin, TX | ONSITE | Full-time

Rebuilding payments for software platforms: transparent economics, no lock-in, hands-on execution. Modern TypeScript stack, real-time streaming, AWS, and heavy investment in agentic AI / LLM orchestration in production.

Hiring (all onsite Austin):

- Sr Software Engineer (7+ yrs, expert TS full-stack)

- Director of Engineering (12+ yrs, scaled 10->50+)

- Risk Data Scientist

- Incident Management Lead

- Risk Intelligence Lead

- Founding Growth Marketing Director

- Senior Partner Sales Consultant

All roles + apply: https://www.getfwd.com/careers/

Questions: amays+hn@getfwd.com (mention HN)

Datadog | Software Engineers | ONSITE (Boston, Lisbon, Madrid, NYC, Paris, Tel Aviv) | Full-time

Datadog is a monitoring, tracing, logs system, and more, for your infrastructure and services. We build our own tsdb, event store [1][2], distributed tracing tools, cutting edge visualizations, and more. We love shipping great experiences for customers just like us and are growing fast! We write a lot of Go, Java, Python, Typescript (with React), and a bit of other languages. We run on k8s, and are multi-region and multi-cloud.

We're looking for people who can build systems at scale as we process trillions of events per day. Let us know if that's you!

https://dtdg.co/hnwhoshiring

[1] https://www.datadoghq.com/blog/engineering/introducing-husky

[2] https://www.datadoghq.com/blog/engineering/husky-deep-dive

Join (join.build) | Staff Software Engineer (Web) | REMOTE (US & Canada) | Full-Time | $175K–$205K + equity | React/Go/Postgres

Join is SaaS for the construction industry — we bring contractors, owners, and design teams onto one platform to coordinate high-value projects.

You'll work across our flagship collaboration app: shaping frontend architecture and UI quality, influencing engineering-wide standards, and shipping with urgency while weighing long-term tradeoffs. We're hiring across profiles — frontend-heavy, fullstack, and backend-heavy — and want someone T-shaped across React/Go/Postgres with deep expertise in at least one.

Stack: React/TypeScript (Vite, RTL, Cypress), Go, Postgres, AWS, Terraform.

You: senior/staff-level experience; strong in at least one of React, Go, or Postgres; a clear communicator who mentors and reviews well.

Apply: email jon@join.build with your resume, whether you lean frontend or backend, and — if you can — a PR review you've given that had a positive impact. Mention HN.