YC Work at a Startup - United States, On-site work

Join FLEETLINE as a Founding Algorithm Developer in NYC. Build and scale core optimization algorithms (MILPs, ML, RL) for large trucking companies. We seek a versatile Python/TypeScript engineer who ships code fast, thrives in ambiguity, and works directly with customers. This is an in-office rol...

Join Uplane as a Founding AI Engineer in San Francisco. Build the core AI engine for automated marketing using LangGraph, TypeScript, and PostgreSQL. Own projects end-to-end in a fast-paced, well-funded startup. Visa sponsorship is available for this on-site role.

Join Uplane as a Founding Full-Stack Engineer in San Francisco. Build our core AI system using TypeScript, Node.js, and Nuxt/Vue with PostgreSQL. Be a key early employee, own the product lifecycle, and solve a massive problem in marketing tech. We offer visa sponsorship for this on-site role.

Join as a Founding Product Engineer in San Francisco. Own the full user-facing platform, from polished React/Next.js interfaces to robust backend services. You'll ship complete products, leveraging AWS/Kubernetes, with a sharp eye for design. Receive equity, benefits, and relocation assistance.

Join as a Founding GPU Compiler Engineer in San Francisco. Build the core AI compiler stack from StableHLO to optimized GPU binaries for NVIDIA, AMD, and TPUs. Deep LLVM/MLIR expertise and low-level GPU optimization in C++/Rust are key. Shape the architecture and culture from day one with equity ...

Join as a Founding Backend & Infrastructure Engineer in San Francisco. Architect and scale core systems for AI-powered document intelligence using Python and cloud tech. Own production infrastructure end-to-end, from Kubernetes to distributed systems. Receive significant equity and visa sponsorsh...

Join as a Founding ML Systems Engineer in San Francisco's Dogpatch. You will build and optimize production ML systems to enhance game affordability and fun. This role requires deep experience in deploying, debugging, and cost-optimizing live AI models. Receive significant equity and work directly...

Join Pax Historia, a fast-growing YC-backed alternate-history game, as a Founding Full Stack Engineer. You'll build and ship features to hundreds of thousands of players using NextJS, TypeScript, and modern tools like Firestore & Supabase. This San Francisco role offers significant equity (0.25%-...