PAYTM - ROUND 1 SDE Java Backend : 2-3 yrs

paytm logo
paytm
SDE Java Backend2 yearsOngoing
November 18, 20252 reads

Summary

I recently interviewed at Paytm for an SDE Java Backend role. I successfully cleared the first round, which primarily focused on Data Structures and Algorithms, and have been selected for the next System Design round.

Full Experience

This was my interview experience for the SDE Java Backend role at Paytm. The first round was heavily focused on DSA. The interviewer started by gracefully asking about my background and work experience, including my tech stack. Immediately after, they posed the first question: "Longest Substring Without Repeating Characters".

I was able to solve it and thoroughly explained my approach to the interviewer, who was satisfied with my code and explanation.

Following that, the second question was "Combination Sum". Initially, I felt a wave of panic, but I managed to compose myself and asked the interviewer for clarification on the problem's demands. They were very helpful, providing hints throughout. Through brainstorming, I was able to crack the problem and proceed to write the code. The moment I completed the base case for the backtracking algorithm, the interviewer seemed confident in my ability to finish it.

The interview then concluded. The verdict was positive: I was selected for Round 2, which will be a System Design round.

Interview Questions (2)

Q1
Longest Substring Without Repeating Characters
Data Structures & Algorithms

Given a string s, find the length of the longest substring without repeating characters.

Q2
Combination Sum
Data Structures & Algorithms

Given a set of candidate numbers candidates (without duplicates) and a target number target, find all unique combinations in candidates where the candidate numbers sum to target. The same repeated number may be chosen from candidates an unlimited number of times.

Discussion (0)

Share your thoughts and ask questions

Join the Discussion

Sign in with Google to share your thoughts and ask questions

No comments yet

Be the first to share your thoughts and start the discussion!