What this interview will probe
Builds the core backend systems that authorize payments, categorize spend, flag risk, and close the books for 50,000+ companies moving over $100B in annualized spend through Ramp. Owns services and data models in a Python/Flask and PostgreSQL stack with asynchronous processing over RabbitMQ. A technical interview would probe backend and data-model design for a financial platform, transactional correctness and idempotency, and how you scale and debug high-throughput payment and ledger services.
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