Unacademy Software Engineer Interview Questions India 2026

Unacademy technical interview FAQ

01What is the recruitment process at Unacademy?

The typical Unacademy recruitment process has 4 stages: Apply through Unacademy careers page or a referral; screening call with HR in 3-7 days → Online coding assessment on HackerRank: 2-3 problems in 60-90 minutes → Two technical interview rounds covering DSA and, for mid-level, LLD → Final hiring-manager or VP Engineering round assessing ownership and product mindset.

02What are the interview rounds at Unacademy?

Unacademy typically conducts 4 interview rounds: Round 1 - Online Assessment (60-90 min): 2-3 DSA problems; common topics include graphs, sliding window, and recursion.; Round 2 - Coding Interview 1 (45-60 min): one medium-hard problem with a focus on edge cases, followed by complexity discussion.; Round 3 - Coding Interview 2 or LLD (60 min): a second algorithmic problem or a low-level design question for candidates with 2+ years of experience.; Round 4 - Hiring Manager Round (30-45 min): product thinking, past impact, and how you work in a fast-moving team..

03What framework should I use for Unacademy technical interviews?

HireStepX recommends the Code then Scale framework for this type of interview: Write a working solution first, then proactively discuss how it holds up under 10x traffic before the interviewer asks

04Reverse a linked list in O(1) extra space. Then explain when you'd use this in production.

To answer this question well, HireStepX recommends the Code then Scale approach: Write a working solution first, then proactively discuss how it holds up under 10x traffic before the interviewer asks Ground your answer in a specific real example from your own experience.

05What is the difference between a class and an object? Give an example.

To answer this question well, HireStepX recommends the Code then Scale approach: Write a working solution first, then proactively discuss how it holds up under 10x traffic before the interviewer asks Ground your answer in a specific real example from your own experience.

06Write a SQL query to find the second-highest salary in a department.

To answer this question well, HireStepX recommends the Code then Scale approach: Write a working solution first, then proactively discuss how it holds up under 10x traffic before the interviewer asks Ground your answer in a specific real example from your own experience.

07What is normalisation in databases? When would you de-normalise?

To answer this question well, HireStepX recommends the Code then Scale approach: Write a working solution first, then proactively discuss how it holds up under 10x traffic before the interviewer asks Ground your answer in a specific real example from your own experience.

08What's the difference between a stack and a queue? Give a real-world use case for each.

To answer this question well, HireStepX recommends the Code then Scale approach: Write a working solution first, then proactively discuss how it holds up under 10x traffic before the interviewer asks Ground your answer in a specific real example from your own experience.