ComfyUI | Founding Technical Recruiter | Full-Time | On-site (San Francisco) | $150K – $250K + Equity ComfyUI is a creative AI startup helping designers and engineers build next-generation visual tools powered by generative models. We’re a small (12-person) team growing fast and backed by top investors. Role: Own recruiting end-to-end — design interview loops, implement ATS and recruiting ops, and hire world-class engineers, designers, and GTM talent. Partner directly with founders to shape our team and culture as we scale from 0 → 1. Requirements: • 5 + years recruiting for VC-backed or hyper-growth startups • Experience building systems/processes, not just filling reqs • Comfort operating independently and collaborating closely with leadership Compensation: $150K – $250K + equity Location: San Francisco (on-site 5 days/week) How to apply: Email Email is hidden with subject line “HN - Founding Recruiter” and include a short intro or your LinkedIn/resume (PDF).

Nexufend | UX/UI Frontend designer + developer | Hybrid/REMOTE Europe (within 5h travel time to VIE)

Nexufend is revolutionizing enterprise network security with a groundbreaking distributed firewall that provides process-level visibility. Founded by entrepreneurs who built Safing (4th fastest-growing open-source startup in 2022), we're scaling our B2B security platform.

We're seeking a User Experience and Interface Developer to craft intuitive interfaces for our network security platform. You'll work across our Dashboard UI (Svelte), Grafana integration (React), and supportive components, transforming complex security data into accessible, user-friendly experiences. Working directly with our CTO, you'll have significant creative freedom to shape how IT administrators interact with cutting-edge security technology.

https://join.com/companies/nexufendcom/15097623-ux-ui-fronte...

PrecisionBiome- Top 3 Young European Companies of 2025| Top 0.1% Founding Full-Stack Engineer | Munich/Berlin (onsite) | Full-time | Visa OK

PrecisionBiome builds personalized gut-microbiome therapies to eradicate chronic disease. Bootstrapped → post-revenue; recognized among the Top 3 young European companies by the European Commission. We’re now scaling the platform.

Role Own the full stack that connects lab data → models → patient/clinician outcomes.

-Strength in one or more of: data pipelines, distributed systems, ML in prod, privacy/compliance

-Low-ego, high-bandwidth, truth-seeking mindset

-->How we work Builder pact. Ownership > hierarchy. Fast feedback, high agency.

Compensation -Salary + meaningful equity. Sponsorship available for exceptional candidates.

Start ASAP · Onsite in Munich or Berlin.

Email Email is hidden —-->or book a quick intro with the founder: https://calendly.com/m-wessely-precisionbiome/call-w-moritz

Let’s build the future of hyper-personalized health.

ko-br | Computer Vision, Imitation Learning, Reinforcement Learning Researchers & Engineers | https://ko-br.com | REMOTE (Globally)

We build Physical AI models deployable today in warehouses to solve mundane tasks like palletizing. Our tech lets robotic arms adapt to mixed SKUs, grip slips, and chaotic environments in real time.

Have a read through our manifesto: https://ko-br.com/manifesto

We want you if You solve problems like an owner (no ego, no blockers). Don’t say "it won’t work." Try it. Validate it. Ship it.

Engineering roles:

— You're hands-on, no theory, just building — Experienced engineer? Great! Recent grad/PhD? Don't get discouraged, apply if you're itching to ship real products Why join?

— Generous base + equity — Work with state-of-the-art AI and real robots (UR/ABB/KUKA/FANUC). — Build tech that solves valuable problems today. About me: Ex-Amazon/Meta. Built AI from satellite imagery to nanotech SEM, powered Alexa’s vision, led ML for WhatsApp. Now building robots that adapt to chaos.

https://www.linkedin.com/in/ahmadbaracat

Apply: https://ko-br.com/careers

Qweebi | Senior Backend Engineer | Remote (IST ±3) | Full-Time

Qweebi is building the world’s first Virtual Makerspace — a 3D online platform where K–12 students can collaborate in real time to design, build, and test high-fidelity Robotics, Engineering, and Electronics projects.

We’re looking for a Senior Backend Engineer to own backend systems, scale infra, and ship AI-powered features. You’ll architect distributed systems, optimize perf/latency, evolve CI/CD, and help us support thousands of concurrent student sessions.

Please apply on: https://careers.qweebi.com/jobs/gw1ihjushe4x/senior-backend-...

Duranta | https://www.getduranta.com/ | Seattle, WA | ONSITE | Full-time

Roles: Computer Vision Engineer

We are building software to help lawn care professionals & landscapers design, sell and maintain beautiful spaces. Millions of acres a year are converted into urban dwelling spaces, and we want to help make them as beautiful and as ecologically friendly as possible.

Duranta was founded a little more than a year ago. We are well funded and are expanding our team. Join us, as our third CV/ML engineer and help lead Duranta's computer vision efforts. You'll work on foundational models for aerial imagery understanding, using one of the largest aerial datasets ever assembled, and: Collaborate with the founders and a world-class CV/ML advisor to push the limits of aerial image understanding Architect scalable training & inference pipelines Build and refine models for fine-grained semantic and instance segmentation Drive experimentation and infrastructure for rapid iteration Help define our CV roadmap—from model architecture to dataset strategy to active learning

Stack: Python, PyTorch, Mask2Former, SwinV2, AWS, W&B

If you're interested in working with us, please apply online. Mention you're from HN and let us know why Duranta is of interest and what you've been working on lately.

Please apply on: https://jobs.lever.co/getduranta

Compass IoT | https://www.compassiot.com.au | ONSITE with Flex (Sydney, AU) | $130-180k AUD

Compass is hiring a full-time front-end developer.

I'm Emily, one of the founders. We are a multi-award-winning start-up that uses connected vehicle data to help transport professionals build better, safer, cities across ANZ, the UK, and USA. This includes B2B and B2G (gov). Notably, our dev team consists of ex-Canva, ex-Huawei, and ex-Agoda. We're bootstrapped, financially stable, and in our 7th year of operations.

The company is employee-owned and has a generous performance-based equity scheme. We value our company culture and work hard to provide meaningful career experiences for all staff, including projects that have changed the transport policy landscape in at least 3 different countries. We care about your experience at work and provide opportunities to grow and learn cool stuff. Our goal is to have a relatively small, motivated team of highly-paid, nice people who feel they are working on projects with tangible impact.

Requirements: - At least 3 years of experience. Ideally, your experience would be in front-end, but back-end development experience is also valuable. - Ideally, you would have some knowledge and/or experience in Typescript, React, State management (Jotai and MobX highly regarded), CSS Modules, Mapbox or similar. - Nice-to-haves include Async generators and promises, Protobuf, and GCP.

The role is onsite with flex; we ask new staff to come into the office during their first few months so that they get to know the team and the tech, but are open to more hybrid after the initial onboarding period.

We're a relatively small (25 people) team. We value people who are collaborative, problem solvers, flexible thinkers, take ownership over problems, and are do-ers who leave their ego at the door.

Other cool stuff: - Almost all Australian state govs use our software to improve roads and safety - We helped change the law in NZ around digital road pricing - We've won +7 different awards, including one from Google - We keep a well-stocked snack fridge and keep you caffeinated

Chuck us an email at Email is hidden with a CV and github/project portfolio.

Rippling | Actively hiring across SF, NY, or SEA| ONSITE/HYBRID (3 days M/Tu/Th, non-negotiable)| Base + Equity (RSUs), pay range included in all job posts

Rippling (YC W17) is a unified workforce management platform. We bring together HR, IT, and Finance in a single system to help businesses manage all their operations—from payroll and benefits to computers and corporate cards—globally. We're rapidly expanding beyond workforce management and have other verticals in active development.

We value engineers who are energized by, and thrive in, a fast-paced, high ownership environment. Here are some of our highest priority roles where you'll have an opportunity to make an out-sized impact in critical areas of the business.

Sr Staff Eng - Global Payroll - https://ats.rippling.com/rippling/jobs/631e8120-3e87-4cb2-80... Staff Eng - Platform - https://ats.rippling.com/rippling/jobs/354322cd-06fd-47f7-80... Senior FullStack Eng - Time Products - https://ats.rippling.com/rippling/jobs/db5da4b4-4882-459c-90...

Director of Eng - Infrastructure - https://ats.rippling.com/rippling/jobs/2f2ae4c8-ec56-4d1f-8f... Sr Eng Manager - Financial Platform - https://ats.rippling.com/rippling/jobs/a9658fef-88df-4dad-a4...

Rippling Careers Page - https://www.rippling.com/en-gb/careers/open-roles

Radical AI | https://radical-ai.com | Multiple roles | NYC | Onsite, 5 days a week

Radical AI is a company (co-founded by Jorge Colindres, Joseph Krause, and Dr. Gerd Ceder) that's focused on changing the way materials are designed, developed, and discovered. Our goal is to build the full stack solution: from AI generated materials to autonomous, high-throughput experimentation, resulting in a new paradigm of scientific discovery that will unlock the next generation of materials that will change humanity for the better. We just raised a $60M seed round (3rd largest in NYC history) and are hiring for highly talented engineers as part of our efforts to revolutionize materials design & discovery.

Key roles:

- Senior Software Engineer - Lab Autonomy (https://jobs.lever.co/radicalai/2885cd8e-f208-4bbc-86c2-d7b4...)

- Senior Software Engineer - AI Systems/Agent (https://jobs.lever.co/radicalai/d5f1267c-82c6-43af-8e72-6f04...)

- DevOps Engineer - Platform (https://jobs.lever.co/radicalai/9891a086-713a-4dc0-a70f-c6f0...)

- Data Engineer - Platform (https://jobs.lever.co/radicalai/fdc7465f-a4e4-4b09-836e-7fe1...)

Feel free to apply using the links above or by shooting me an email w/ a resume + portfolio at Email is hidden

Coder | https://coder.com/ | Multiple roles | Multiple locations | Full-time

Coder is an AI software development company leading the future of autonomous coding. We empower teams to build software faster, more securely, and at scale through the collaboration of AI coding agents and human developers. Our mission is to make agentic AI a safe, trusted, and integral part of every software development lifecycle.

Coder’s self-hosted Cloud Development Environment (CDE) is the foundation for deploying agentic AI in the enterprise. It provides a secure, standardized, and governed workspace to deploy autonomous coding agents alongside human developers, accelerating innovation while maintaining control and compliance. Coder's isolated, policy-driven environments improve productivity, cut cloud costs, and reduce data risks. Developers transition to AI at their own pace using their own tools. Platform and security teams can govern, audit, and manage a great developer experience at scale.

We passed 100k stars on GitHub! https://github.com/coder

All positions are fully remote in the countries listed unless otherwise specified.

[1] Software Engineer, AI tools (US/Canada)

[2] Senior Software Engineer, AI Tools (US/Canada)

[3] Staff Software Engineer, front-end TypeScript/React (US/Canada)

[4] Security Engineer, DevSecOps (UK/Ireland/Poland)

[5] Senior Product Designer (United States)

And more! Apply here + job descriptions, salary bands: https://coder.com/careers?utm_source=o2n5ew72wd

Not all of our jobs are listed here. Please note that you must submit an application to be considered for any of our positions.