Paytm Senior Software Engineer Interview Experience

Senior Software Engineer

June 11, 2025
6 Questions

Summary

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The Paytm Senior Software Engineer (Backend) interview process consisted of three rounds and was notably challenging. The first round featured coding questions and MCQs focusing on Data Structures and Algorithms, while the second round involved algorithm-specific problems. The third round included detailed project discussions and scenario-based technical questions, assessing candidates on complex concepts such as scalability and fault tolerance. Overall, the interview at Paytm appears to be a rigorous evaluation of both technical abilities and understanding of software engineering principles.

1

𝐅𝐢𝐫𝐬𝐭 𝐑𝐨𝐮𝐧𝐝 (𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰)

#1

Coding Questions

In the first round, two coding questions were asked that were at a medium-easy level. Candidates should be prepared for such questions as part of their technical assessment.
coding
interview-preparation
Easy
#2

DSA MCQs

During this round, six multiple-choice questions focused on data structures and algorithms (DSA) theory were administered. Topics included trees and other data structure fundamentals.
dsa
theory
multiple-choice
Medium
2

𝐒𝐞𝐜𝐨𝐧𝐝 𝐑𝐨𝐮𝐧𝐝 (𝐃𝐚𝐭𝐚 𝐒𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞𝐬 𝐚𝐧𝐝 𝐀𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐬)

#1

Smallest Subarray Problem

Given an array of integers, find the smallest subarray that contains both the minimum and maximum elements. The solution's efficiency is essential. For reference, check the problem [here](https://lnkd.in/gSkZsCga).
arrays
minimum
maximum
subarray
Medium
#2

Aggressive Cows Problem

Solve the Aggressive Cows problem, where you need to place cows in stalls under specific constraints. Refer to the problem description [here](https://lnkd.in/ggcBrZRH) for more information.
aggressive-cows
placement
algorithm
Medium
3

𝐓𝐡𝐢𝐫𝐝 𝐑𝐨𝐮𝐧𝐝 (𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰)

#1

Project Discussion

Discuss your recent projects in detail, covering aspects like impact, trade-offs, architecture, testing, and potential future improvements.
project-discussion
architecture
testing
Medium
#2

Scenario-Based Questions

Respond to scenario-based questions that evaluate your understanding of scalability, fault tolerance, resilience, rate limiting, circuit breakers, and load balancing.
scalability
fault-tolerance
system-design
Hard
r

ritwik chakraborty

Verified User

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