LeetCode Question · Jan 2025 · Bangalore

PhonePe | Software Engineer | Dec 2024

3 upvotes 854 views 4 replies

Question Details

Experience: 3+ Years Company: PhonePe Role: Software Engineer (3-5 yoe) Location: Bangalore Applied through referral __

Round 1 Machine Coding | 1.5 hr Activity tag logging system. Functionalities to build: 1. user should be able to add tags to...

Full Details

Experience: 3+ Years
Company: PhonePe
Role: Software Engineer (3-5 yoe)
Location: Bangalore
Applied through referral


**

Round 1 Machine Coding | 1.5 hr**
Activity tag logging system.
Functionalities to build:
1. user should be able to add tags to activity in hierarchical order.
2. user should be able to retrive count of how many times tag is used accross all entity

Focused Skills: Design Patterns, Time complexity, Code quality
After few days code evaluation round was schedule where you have to explain your approach and tradeoffs if any to the interviewer

Verdict Strong Hire

**

Round 2 DSA and Problem Solving | 1 hr**
1. https://leetcode.com/problems/matchsticks-to-square/description/
2. https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/description/

Focused Skills: Problem Solving approach, Time/Space complexity

Verdict Lean Hire

**

Round 3 Design | 1 hr**
Design Twitter
Functionalities:
1. Post Tweet
2. follow-following
3. user timeline
4. user profile

Focused Skills: LLD, HLD

Verdict Strong Hire

**

Round 4 Hiring Manager | 1hr**
Questions from resume and previous projects/features I worked on.

Focused Skills: Deep understanding of the work you have done previously and design decisions

Verdict Strong Hire


Final

Verdict Hire

About This Question

This is a reported interview question from a twitter/x interview for a swe role during the phone screen round reported in 2025.

It covers the following topics: Matrix, Oop, Heap .