Cora AI | Founding Engineers (Full Stack & Applied AI) | Remote (USA only, CA & NY preferred) | Full-time | $175-220k + Early Equity

We're building AI agents to transform how B2B companies scale customer relationships. I'll let our customers do the talking: "I'm super excited!! You're changing our lives!!" - Account Manager for Emerging Enterprise (mid-market) accounts that don't usually get very much support

Fresh off our seed round from Acrew Capital, Emerson Collective, Recall Capital and notable angels from LinkedIn, BetterUp, Glean, and Scale AI, and others we're looking for founding engineers to help realize our vision.

Tech stack: Python, FastAPI, React, Vite

- Full Stack: https://cora-careers.notion.site/founding-full-stack-enginee...

- Applied AI: https://cora-careers.notion.site/founding-applied-ai-ml-engi...

You can learn more here: https://cora-careers.notion.site/

If you are interested, email us at Email is hidden — These emails go to me, and I review each one of them.

Feel free to reach out if you're interested or have any questions

Vibrant (https://www.vibrantpractice.com) | Founding Design Engineer | Full-Time | Remote (US-only)

We're building Cursor for doctors. At Vibrant, we've picked the expensive, high-touch, data-heavy subspecialties of functional, integrative, and longevity medicine, and we've created AI agents that reduce hours of clinical work to minutes.

We're a world-class team of health tech founders, AI builders, and physicians from companies like Meta, Stride Health, Parsley Health, Truepill, and others. In just five months, we've built notetaking/scribing, Clinical Decision Support, and some of the integrations a clinician needs to run their practice with Vibrant as their AI Operating System.

In words of our customers: "I have goosebumps, this is really incredible. Very accurate." "Seeing the patient overview AI-generated summary come to life after placing a couple notes is AMAZING. I'm losing it over here" Our stack: Typescript, React, NextJS, React Native, Expo, and custom AI agents, RAG, tools, and agentic workflows.

We're looking for folks who ship fast and are curious and resourceful. If that's you, shoot me an email at Email is hidden or just book an intro with me: https://book.vimcal.com/p/pedro/hn-15-minute-chat-with-pedro...

Vivid Machines | Senior Software Eng Mobile/Web | Toronto or Bay Area | Full-time

We're building edge AI and a data platform for high-throughput, high-fidelity analysis of fruit crops to get this $1T industry ready for the future of farming. We operate in orchards in vineyards around the world.

We're looking for someone to take our analytics apps to the next level, in close collaboration with product, ML, and embedded SWE.

More info here: https://vividmachines.bamboohr.com/careers/76?source=awq9mje...

Orca | Europe (Madrid, Oslo, Berlin, Barcelona...) | Remote (EU timezone)/Hybrid/On-site | https://getorca.com

At Orca, we’re building the future of marine navigation. Our mission is to become the go-to app for planning and navigation on water.

We’re a small, fast-moving team with emphasis on ownership and autonomy. We serve over 250k active boaters across Europe and North America. We're looking for engineers and product builders who want to ship to a passionate user base. If you are into boating/sailing, this is a great opportunity to build in the space.

Open roles:

- Senior/Lead Mobile Engineer, React Native - Build high-quality apps used by boaters worldwide → https://getorca.com/careers/senior-mobile-engineer-rn/

- Senior Software Engineer, GIS - Build marine charts → https://getorca.com/careers/gis-engineer/

- Senior Software Engineer, Algorithms - Build our routing engine for sailboats and powerboats → https://getorca.com/careers/senior-software-engineer-algorit...

We also have open roles in product/design, marketing and quality.

Reach out to us at Email is hidden. Mention you are coming from HN.

Kaleidoscope.bio (www.kaleidoscope.bio)| NY, SF, Remote (North America) | Full-time | Software Engineer

We're building the R&D operations platform for ambitious scientific teams. If you're passionate about advancing scientific research and solving complex engineering challenges in a fast-paced startup, join us!

Apply here: https://www.kaleidoscope.bio/careers

Sphinx Defense | Engineering, DevOps, & Product | Remote (US Only), DC, Colorado Springs, LA | https://www.sphinxdefense.com

Sphinx Defense builds software to solve complex national security problems for America and its allies. Founded by engineers and technologists with deep experience across commercial and defense technology, we're building a vehicle-agnostic communication infrastructure to enable satellite operators to securely utilize antenna networks and maneuver satellites in real-time. We're bootstrapped, profitable, and growing aggressively.

To learn more about who we are, our engineering culture, and whether this is the right place for you, read our Key Values profile: https://www.keyvalues.com/sphinx-defense

Our current openings are: Sr. Backend Engineer - Colorado Springs : https://grnh.se/7184c0238us

Sr. Backend Engineer - Remote : https://grnh.se/3ef2598b8us

Sr. Fullstack Engineer - Colorado Springs: https://grnh.se/c51e13b88us

Sr. Fullstack Engineer - Remote: https://grnh.se/df77bc628us

Sr. DevOps Engineer - Colorado Springs: https://grnh.se/e0bcde898us

Don’t see a role that aligns with your interests or don’t have the specific Space/ Command & Control experience? Apply to the general interest application and list what type of role you would be interested in : https://grnh.se/4ce199d68us

Check out our open roles: https://www.sphinxdefense.com/#careers

Fairwater Labs | Technical Cofounder for Planning and Strategy AI Dual-Use Startup | Remote-first | Full-Time | Competitive salary and significant equity (US authorized only)

Help us reinvent how military and civilian teams plan complex operations. We’re building an AI copilot that streamlines today’s manual, slide‑driven workflows—drafted by LLMs and refined by the user in real time. Think Cursor for strategic planning.

Why join now?

Backing from a dual‑use venture studio with multiple exits and in‑house DoD BD expertise.

Wireframes, validated user stories, and early users are ready—your code ships to real operators fast.

Founder CEO is a former Army officer and past startup‑exit founder with a full-stack developer skillset who’ll speak your language.

What you’ll do

Own the end-to-end architecture & roadmap – choose the stack, design data pipelines, secure cloud infra, and React/TypeScript front-end.

Build the MVP with the CEO, ship weekly releases, then hire and lead a small, AI-leveraged team.

Co-shape product decisions with DoD users and early commercial adopters. You

Highly experienced full-stack/ML engineer who can explain and defend tool choices (e.g. Python, TypeScript/JavaScript, React, LangChain, vector DBs, CI/CD, IaC).

Proven track record shipping production LLM or search-heavy apps with polished UIs; comfortable with DevSecOps and data security (GovCloud/IL4+ a plus). Entrepreneur at heart—show us something you’ve built that shipped fast.

Send a brief intro (or resume if you have it) + GitHub/portfolio to Email is hidden.

Jam.dev | Staff Fullstack Engineer | Typescript/React | Remote (+ in person in SF) | Full-time

Dev tools company with 200,000+ users. $15M in funding from Vercel CEO, GitHub CTO, Cloudflare CEO, etc.

We're building an AI-powered flight recorder for web apps – so anyone can report issues to engineers in a way that's actually debuggable (w/ console, network, websockets debugger, etc).

Small, senior team – several ex-engineering directors turned ICs (mostly ex-early Cloudflare). Looking for staff-level engineers with experience building highly performant front-end apps.

Stack: React/Typescript and MobX (MST) on the frontend, and Node/GraphQL across our backend.

As a dev tool, developers at Jam are directly connected and involved with the product. Your usage of the product will directly inform the direction of Jam's future.

Apply here (we read every submission): https://jam.dev/careers

thelab (https://www.thelab.co) | Senior Backend Engineer | ONSITE (NYC) or REMOTE (US or Türkiye) | Full-Time

We are looking for two experienced back-end engineers: (1) one to lead work with our client’s e-commerce business; (2) a second to lead a greenfield project involving ML and NLP driven workflow automation tools. The ideal candidate would have experience working with large Python and Typescript codebases. We are looking for someone who is self-motivated and is able to work with a team early on in a project, plan and identify requirements, see a project through to completion, and mentor junior members of the team along the way.

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About thelab

We’re an agency of makers with deep expertise in solving creative and technology challenges. Our focus is on making better work to help brands work better. From branding & design, to software builds, large-scale ecommerce or anything in between, thelab mixes inspiration and hard work to produce results that mean business. Oh, and we host a mean barbecue too.

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To apply, please go to https://thelabnyc.bamboohr.com/careers or email Email is hidden.

[Stealth GenAI startup] | NYC ONSITE | Founding Engineering Lead | Full-Time]

We're a stealth mode genAI startup working to advance the state-of-the-art in generative visual media. We've just closed our preseed round and are now backed by 3 expert VC funds and a collection of AI leader angels. Our team consists of highly experienced AI leaders from leading companies. And we're working with some of the biggest companies in media.

The role we're hiring for is an engineering leader to drive the evolution of our research platform into our first commercial-grade product. This work centers around the orchestration and scaling of vision and image generation models. You'll be the primary architect of our platform capabilities and working closely with both cloud and model partners as well as enterprise customers deploying our technology.

This is a unique opportunity to be part of the founding technical cohort of a deeply innovative team with a unique technology that no one else is building.

More about the role here: https://docs.google.com/document/d/1xmituj3vtga96yg3ezorsadj...