Founding engineer role launching 0→1 agentic product bets inside Replit's Product Foundry

Product Foundry is Replit's internal incubator for high-risk, full-stack 0→1 initiatives meant to define new multi-billion-dollar categories around AI coding agents. As an Engineer DRI, you'd run a lean squad through 3-week sprint cycles with total ownership of an initiative's technical, product, and launch outcomes. This is a high-agency, founder-style role for someone comfortable with ambiguity and fast market validation, based out of Foster City with an in-office requirement.

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What this interview tests

Founder-style end-to-end ownership (DRI model)
Rapid 0→1 execution under tight sprint cycles
Agentic software development stack (coding agents building/testing/reviewing code)
Product judgment: balancing UX, speed, correctness, maintainability
Cross-functional leadership without formal authority
Modern web stack (TypeScript, React, Node.js, Postgres)

Common question themes

Tell me about a 0→1 initiative you owned end to end under a tight deadline

How do you decide what to cut when scope and timeline collide

Describe a platform system you built that other teams depended on

How would you help a coding agent build, test, and review its own code

Give an example where you led a project with stakeholders who didn't report to you

How do you validate a risky product bet fast with real users

How candidates describe it

Real Senior Product Engineer interview stories — retold from candidates' public write-ups, with sources.

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