YC Work at a Startup - IT - Software Development

Join our Amsterdam team as a Full-Stack Developer. Build autonomous AI agents that manage e-commerce support end-to-end. You'll ship features fast, using AI tools daily to multiply your impact. We seek resourceful builders who own outcomes and think in systems.

Join Hypercubic as a Founding Software Engineer in San Francisco. Shape AI systems that analyze and rearchitect critical legacy enterprise applications. You'll work directly with the CTO, owning architecture and product direction from prototype to production. This role demands strong fundamentals...

Join as a Founding GPU Kernel Engineer in San Francisco. Hand-tune and optimize low-level GPU kernels for ML workloads, pushing hardware limits. Deep expertise in CUDA/ROCm, profiling tools, and GPU assembly is essential. Receive equity, bonus, benefits, and relocation assistance in this pivotal ...

Join Leadbay in San Francisco as a Frontend Engineer. You will build an engaging sales app using React and TypeScript, developing smart crawlers and AI-powered tools. This role requires US citizenship/visa and offers equity compensation. Shape the future of B2B lead generation.

Join as a Founding Engineer to architect the Unity mobile app for Pax Historia from scratch. You will build the core gameplay loop, optimize for mobile performance, and integrate with backend services. This role requires 3+ years of experience shipping polished Unity apps to iOS/Android stores. B...

Join Truth Systems as a Founding Full-Stack Engineer in San Francisco. You'll build our core trust & safety platform from 0→1 using React, TypeScript, Next.js, and Python. We seek a product-focused, empathetic builder with strong full-stack skills. Receive meaningful equity (0.3-1%) and comprehen...

Join Verne as a founding Robotics Data Infrastructure Engineer in San Francisco. Architect and deploy critical AWS and edge data pipelines for real-world robots. You'll manage large-scale multimodal datasets and build MLOps tooling, directly impacting production systems. Requires strong Python, A...

Join as a Founding Engineer in Amsterdam. Own product features end-to-end, shipping fast with quality across the full stack. Leverage AI tools daily to multiply your output and build exceptional user experiences. We seek a resourceful, product-focused developer proud of their craft.

Join a New York team building autonomous AI agents for e-commerce support. As a Full-Stack Developer, you'll own features end-to-end using Python, FastAPI, TypeScript, and React. You'll ship fast, leverage AI tools daily, and focus on scalable systems and clean architecture. Help create an AI-man...

Join Idler in San Francisco as a Software Engineer. Build agentic systems and tooling for cutting-edge AI coding environments used by leading labs. We seek passionate developers, including new grads (US only), to ship features fast. Enjoy full benefits, latest tech, PTO, and team events.

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.