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Interview quiz track

First 2 free Intermediate System Design

Backend Engineer Interview

Practice interview questions for backend engineer roles. Cover API design, databases, scalability, and reliability. Answer questions and receive feedback. Ideal for backend interview prep. First 2 questions are free with full feedback.

  • Level Intermediate
  • Questions 12
  • backend
  • engineer
  • role

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Sample backend engineer interview interview questions

Preview 6 questions from this track in quiz order. In the full quiz you answer one at a time — type or speak — then get a score and feedback.

  1. How would you design a REST API?

    What a strong answer includes

    Resources, methods, and status codes.

  2. What is the difference between SQL and NoSQL?

    What a strong answer includes

    Use cases and trade-offs.

  3. How do you handle authentication and authorization?

    What a strong answer includes

    Tokens, sessions, or RBAC.

  4. Describe how you would scale a database.

    What a strong answer includes

    Read replicas, sharding, or caching.

  5. What is caching and when would you use it?

    What a strong answer includes

    Latency and consistency trade-offs.

  6. How do you design for high availability?

    What a strong answer includes

    Redundancy and failover.