Build and Optimize a React Interface Against an Undocumented API
Company: Stripe
Role: Frontend Engineer
Category: Software Engineering Fundamentals
Difficulty: medium
Interview Round: Onsite
Overview: Complete a time-boxed React engineering exercise against an undocumented API while using coding agents deliberately. Inspect the real response shape, separate independent tasks, add reliable data flow and caching, obtain a review, and manually verify behavior instead of trusting generated changes.