Founding Engineer Jobs - December 2025

Miniswap is a marketplace for complex hobbies, starting with Warhammer. We're backed by Y Combinator and have just closed our seed funding round. In the past six weeks since we launched, users have listed $150,000 of tabletop wargaming miniatures for sale on …

General Catalyst-backed Stealth AI Startup | Founding Engineer | Onsite (New York City) | Full-time We’re building the AI operating system for engineering firms - automating the workflows behind the infrastructure America runs on. Founded by engineers and ope…

At Songscription, we are building state-of-the-art AI models to automate music transcription, with the vision of enabling any musician to learn any song, on any instrument, at any level.

BusbySim is a SysML v2 system safety platform helping engineers design safer aircraft and other safety-critical systems. We are early stage, already working with some of the UK's most interesting aerospace companies, and now looking for our first engineering …

At Strum AI, we're reimagining technology that powers global supply chain using a fresh AI-first approach. Most supply chains are still stuck with Excel or enterprise tools that take months (and $MM) to adopt. Our mission is to lower that barrier — making it …

Building a photo-sharing app that uses computer vision to automate parts of sharing photos with friends. Backend ownership role: wire backend, integrate ML pipeline and mobile app, and ship. Stack includes FastAPI, Postgres, Supabase, AWS. Must have real back…