Senior SDE Interview Questions at Stripe
6 real Senior SDE interview questions asked at Stripe. Covers System Design, Technical rounds. Sourced from engineers who cleared the loop.
Interview Signals — What Stripe Asks Senior SDEs
All Senior SDE Questions Asked at Stripe
Design a distributed rate limiter that works across 100 API servers. A user is allowed 1000 requests per minute.
Explain idempotency keys in a payments API. What specific failure mode do they prevent, and how would you design the storage layer for them so they don't become a bottleneck?
Design a double-entry ledger system for tracking money movement between accounts. Why is this pattern preferred over simply updating a balance column, especially for auditability?
Design a webhook delivery system that must guarantee at-least-once delivery to customer endpoints, with retries and backoff, without letting one slow customer endpoint block delivery to others.
How would you design API key storage so that even if your database is breached, attackers can't use the leaked keys directly?
A Kafka consumer processing payment events crashes and restarts, re-reading the last uncommitted batch. How do you make the payment-processing logic itself idempotent, not just rely on Kafka?
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