PhonePe Software Engineer Interview Questions
PhonePe engineering interviews are heavy on distributed systems for UPI and financial infrastructure. They value engineers who understand high availability, transaction consistency, and the unique challenges of building on India's payment stack.
What they assess
Sample PhonePe Software Engineer interview questions
How would you design a UPI transaction system that handles 1 billion transactions per day?
How to answer: Cover NPCI integration, timeout handling, reconciliation, and the retry strategy.
What strategy would you use to ensure zero data loss during a database failover for financial transactions?
How to answer: Talk about synchronous replication, WAL, and how you validate consistency post-failover.
How do you design a fraud detection system that makes decisions in under 100ms?
How to answer: Feature engineering in real-time, rule engines vs ML models, and the fallback path.
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