stripe doesnt do LC. they do practical problems. got asked to build a simple payment processing system. started with a function that charges a card, then added refund logic, then added idempotency. 45 minutes. felt like a real engineering problem instead of an algorithm puzzle. honestly refreshing. interviewer was super chill. asked good follow up questions about error handling and edge cases. waiting for next steps

Stripe phone screen - practical coding

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stripe doesnt do LC.

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stripe interviews are the best in the industry imo. actual engineering problems, collaborative vibe, no gotcha questions. the onsite is the same style but harder and longer

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the idempotency part is the key. if you handled it well (idempotency key in request header, storing processed keys in a set/map, returning cached result for duplicate requests) youre probably moving forward

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heads up: the onsite has a bug squash round where they give you a broken codebase and you have to find and fix bugs. its unique to stripe and really tests practical debugging skills. worth practicing