Product Engineer | Y Combinator
Location: San Francisco (Onsite - Dogpatch)
Type: Full-time
Source: Hacker News
About the Role
YC is hiring Product Engineers to build the future of YC—and increasingly, software for startups everywhere. We are a team of ~20 engineers building everything from Work at a Startup and Demo Day to investor software, founder tools, AI systems, and new open-source projects.
We operate without PMs. Engineers talk to users, decide what to build, and ship quickly.
What We Are Building
- New Products: GStack rethinks the software stack for an AI-native world. GBrain explores persistent memory and knowledge systems for AI. Paxel and other AI-powered products help founders—and increasingly everyone else—build software and companies faster.
- Products at Scale: We build and operate Work at a Startup (2M+ candidates, 1000s of early startups), Demo Day, our investor marketplace, SAFE signing, founder CRM, and the software that powers YC itself.
- Data: YC has over 20 years of proprietary startup data. We are applying it to how we think about the future of YC's batch, fundraising tools, hiring, recommendations, and entirely new ways to help people start and grow successful companies.
What We Are Looking For
AI has fundamentally changed how we build software. We are looking for engineers who are already experimenting with:
- Coding agents
- MCP (Model Context Protocol)
- LLMs
- Context engineering
- Evals
- Developer tooling
Technical Stack: Our stack includes Rails, React, Postgres, Python, TypeScript, LLM APIs, and plenty of experimental infrastructure. However, we are much more interested in great builders than expertise in any particular framework.
Why Join Us
- Work in-person in San Francisco (Dogpatch).
- Work closely with founders and alongside team members like Garry, Jared, and Diana.
- Help define how YC—and startups more broadly—build software in the AI era.
- Join a small, high-autonomy engineering team.
Compensation
- Competitive compensation.
- Carry in the YC fund.
How to Apply
Learn more about the team and role at ycombinator.com/software.
If this sounds exciting, email Ryan directly at ryan@ycombinator.com.