Founding Engineer Jobs - April 2026

I'm Gio, CTO of Foundry Robotics. We're an early stage startup building robotics for manufacturing applications. We are looking for people with one or more of these skills: 1) Tinkerer/mechanical engineer -- Build robots in our lab with a mix of design and ha…

Founding Engineer role at GenTube. Turning consumers into creators; AI creation as entertainment. Early signals: ~10M creations/month, daily usage. Responsibilities: own core loop (create → remix → repeat), real-time generation (latency, cost, scale), feed an…

Promptless (YC) builds AI agents that automatically update customer-facing documentation. YC-backed seed-stage startup. Two founding roles in San Francisco (onsite): Founding Docs Practice Lead — own the documentation practice, onboard customers, build method…

AI health coaching startup with a live product built on biomarkers (DNA, wearables, labs, food logs). Seeking a Founding Engineer to own architecture and infrastructure, modernize the stack (containerize, CI/CD), and lead a HIPAA-compliant AWS migration. Work…

MintMCP helps enterprises safely do more with Agents by building an MCP gateway with the abstractions enterprises need to deploy long-running agents across organizations while limiting blast radius and providing appropriate tools. The small team operates on t…

Scorecard builds simulation environments and reward models that frontier AI labs and enterprises use to train and evaluate their agents. Founding team built simulation infrastructure at Waymo, SpaceX, and Uber ATG. Company is ~7 people, $3.75M seed led by Kin…