Product Engineer at Y Combinator

You will build the operational backbone of YC, developing full-stack systems for the admissions pipeline, Demo Day, and internal tools. As an AI-native engineer, you'll own the entire product lifecycle—from UI design to backend architecture—without PMs or designers, turning high-stakes operational complexity into elegant, automated software that supports thousands of founders.

• Design and ship full-stack applications for the YC admissions pipeline, including semantic search, LLM-driven email classification, and automated interview scheduling.
• Build and scale the digital infrastructure for major events like Demo Day, handling registration, investor coordination, and complex media workflows.
• Partner directly with YC partners to identify manual bottlenecks and develop custom internal tools that automate decision-making processes.

• A product-minded full-stack engineer with a proven track record of shipping complete web applications and owning the end-to-end user experience.
• Highly proficient with AI-enabled development (e.g., Cursor, Copilot) and experienced in integrating LLMs or vector databases into production environments.
• A low-ego builder who thrives in ambiguity, potentially a former founder or early-stage engineer, comfortable working in a high-trust, fast-moving environment.

• You have total product ownership, acting as your own PM and designer to ship features that directly impact how the world's top startups are selected and supported.
• Join an elite 18-person engineering team at the heart of an ecosystem that has launched over 5,000 companies valued at more than $600 billion.
• The compensation structure is unique, offering a high base salary plus profit-sharing designed to be comparable to startup equity or venture capital carry.