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Backend Development Interview Questions

Master server-side programming, APIs, databases, and system architecture

50 Questions ~2 hours Essential Topics

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Backend Development Interview Topics

This page covers 50 essential backend engineering interview questions across the following core areas:

REST APIs & GraphQL — API design, HTTP methods, status codes, versioning
Databases — SQL vs NoSQL, indexing, transactions, ACID properties
Server Architecture — microservices, monoliths, event-driven design
Caching — Redis, Memcached, cache invalidation strategies
Authentication — JWT, OAuth2, session management, security
Node.js & Python — async programming, event loop, frameworks
Message Queues — Kafka, RabbitMQ, pub/sub patterns
System Design — load balancing, horizontal vs vertical scaling

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