Frontend Leaning Full Stack Engineer

YC relies heavily on software to run the batch and support thousands of alumni — and much of that software is deeply frontend-driven , used all day by founders, partners, and investors. The Bookface team builds YC’s most important user-facing tools, and nearly everything you work on will shape someone’s experience in the batch or alumni community. Current projects include:

Internal Software. Build and improve the internal tools that keep YC running at scale — from productivity software for Group Partners who support thousands of companies, to systems that help finance and legal teams process high-volume operational workflows.

Bookface. The primary interface founders use throughout the batch — from event schedules to office hours to pitch prep. You’ll be shaping UX and UI that founders interact with every single day.

Investor Tools. A critical frontend experience used by thousands of investors. Your work helps founder and investors connect with one another, and further the support of YC raising billions of dollars in seed funding.