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Investment Associate & Product Engineer

Y Combinator · San Francisco Bay Area · On-site

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About Y Combinator

Y Combinator created a new model for funding early stage startups. Four times a year we invest in a large number of startups. Backed by Y Combinator.

About the role

Design, build, and ship full-stack web applications for partners, founders, and investors Own features end-to-end: scoping, design, implementation, and iteration

What they're looking for

  • Experience shipping full-stack web applications
  • Ability to design systems and reason about tradeoffs independently
  • Strong analytical thinking, comfort with metrics and financial concepts
  • Clear written and verbal communication
  • Excellent judgment, integrity, and ability to work with sensitive information
  • Experience with Rails, React, Postgres, or similar frameworks and databases
More about this role

Y Combinator is looking for a full-stack product engineer who also wants to apply their skills to investing, diligence, and founder support. This role sits at the intersection of engineering, product, and investing. You will spend much of your time writing production code — building internal and founder-facing tools — while also contributing directly to company evaluation and investment decisions.

This is not two jobs stitched together. The core of the role is turning judgment into software: using code to improve how YC evaluates companies, supports founders, and scales its impact after the batch.

Design, build, and ship full-stack web applications for partners, founders, and investors

Own features end-to-end: scoping, design, implementation, and iteration

Work across frontend, backend, and data layers to improve YC's post-batch and internal platforms (e.g., founder tools, analytics, workflow systems)

Make pragmatic engineering tradeoffs in a fast-moving, high-ownership environment

Evaluate post-batch and growth-stage companies by analyzing business models, markets, teams, and operating metrics

Contribute to diligence efforts, including reviewing decks and data rooms, benchmarking...

Read the full posting on Y Combinator's site ↗

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