Backend Developer Interview Questions
The questions you're most likely to face in a Backend Developer interview — behavioral, technical, and role-specific. Then practise them out loud with a free AI mock interview.
Practise with AI mock interview →Behavioral & fit
- 1.Tell me about yourself and why you're targeting this role.
- 2.Describe a project you're most proud of. What was your specific contribution?
- 3.Tell me about a time you missed a deadline or failed. What did you learn?
- 4.How do you prioritise when everything feels urgent?
- 5.Describe a disagreement with a teammate and how you resolved it.
Technical — core Backend Developer skills
- 1.Walk me through how you've applied API design in a real backend developer project.
- 2.Walk me through how you've applied Databases in a real backend developer project.
- 3.Walk me through how you've applied Authentication in a real backend developer project.
- 4.Walk me through how you've applied Caching in a real backend developer project.
- 5.Walk me through how you've applied Microservices in a real backend developer project.
Tools & technologies
- 1.What's your experience with Node.js, and when would you choose it over an alternative?
- 2.What's your experience with Python, and when would you choose it over an alternative?
- 3.What's your experience with Go, and when would you choose it over an alternative?
- 4.What's your experience with PostgreSQL, and when would you choose it over an alternative?
Role-specific
- 1.What does success look like in a Backend Developer role in the first 90 days?
- 2.How do you stay current with changes in engineering?
- 3.Describe how you'd approach a typical problem a Backend Developer faces day to day.
Don't just read them — practise out loud
Reading questions isn't enough. Our AI mock interview asks you Backend Developer questions, records your answers, and scores you on structure, pacing, and filler words.
Company-specific interview questions
Round-by-round processes, difficulty, and what each interviewer assesses.