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Lead Backend Developer Interview Questions

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6,282 lead backend developer interview questions shared by candidates

Round 1: 1. 2 sum 2. 3 sum 3. destructuring a list in Python 4. discussion on the project 5 Sql query 2nd highest salary 6. questions on React, Django, and Linux basically what skills you have written on your resume Round 2: 1. Real-life questions like if you have the IRCTC app how would you take such a large no. of requests in such a short duration? 2. How to know if your app is accessed by a human or a bot? 3. Authentication, Authorization Jwt token, session-based authentication difference on token-based and session-based authentication. 4. Some SQL queries. 5. Hashmap implementation (theory), Redblack tree conditions Bst tree conditions. hashmap collision prevention techniques. and the complexity of everything mentioned above. Round 3 and 4 are just casual talks
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Backend Developer Intern

Interviewed at Ridecell

3.3★
Dec 18, 2023

Round 1: 1. 2 sum 2. 3 sum 3. destructuring a list in Python 4. discussion on the project 5 Sql query 2nd highest salary 6. questions on React, Django, and Linux basically what skills you have written on your resume Round 2: 1. Real-life questions like if you have the IRCTC app how would you take such a large no. of requests in such a short duration? 2. How to know if your app is accessed by a human or a bot? 3. Authentication, Authorization Jwt token, session-based authentication difference on token-based and session-based authentication. 4. Some SQL queries. 5. Hashmap implementation (theory), Redblack tree conditions Bst tree conditions. hashmap collision prevention techniques. and the complexity of everything mentioned above. Round 3 and 4 are just casual talks

4 rounds containing 2 technical/DSA based round,1 managerial round and last one is the HR round. 1st round : 1) Tell me about yourself? 2) DSA : Tree/ Red black tree Palindrome in a Linked list using two pointers 2nd round : Django Caching,ORM and SQL queries DSA questions: Sliding window problem Travelling salesman problem 3rd Round : Projects in which you have worked in, roles and responsibilities. DSA: Hare and tortoise problem. Rejected in 3rd Round without a full feedback.
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Backend Developer

Interviewed at Paytm

3.2★
Jun 22, 2023

4 rounds containing 2 technical/DSA based round,1 managerial round and last one is the HR round. 1st round : 1) Tell me about yourself? 2) DSA : Tree/ Red black tree Palindrome in a Linked list using two pointers 2nd round : Django Caching,ORM and SQL queries DSA questions: Sliding window problem Travelling salesman problem 3rd Round : Projects in which you have worked in, roles and responsibilities. DSA: Hare and tortoise problem. Rejected in 3rd Round without a full feedback.

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