Backend Developer Interview Questions

9,192 backend developer interview questions shared by candidates

They asked me two data structure problems — one was to implement a stack using queues and a queue using stacks, both focusing on object-oriented implementation. In the second technical round, they asked the 3-Sum problem, where I had to find all unique triplets in an array that sum up to target.

Backend Developer Intern

Interviewed at Astuto.ai

2.8
Apr 12, 2025

They asked me two data structure problems — one was to implement a stack using queues and a queue using stacks, both focusing on object-oriented implementation. In the second technical round, they asked the 3-Sum problem, where I had to find all unique triplets in an array that sum up to target.

Viewing 8221 - 8230 interview questions

Glassdoor has 9,192 interview questions and reports from Backend developer interviews. Prepare for your interview. Get hired. Love your job.