Hi All,

I recently interviewed with Swiggy(Bangalore), and wanted to share my experience. Hope this helps

Years of Exp: 7+
Applied via LinkedIn referrals.

Round 1 - Machine Coding - 2hours
Design a Parking Lot System.
Full Question

So in this round you are expected to have a fully executable code with proper code design (in IDE) with basic test cases. I was able to do them. Was asked some questions on basic scalability and concurrency.

Round 2 - Problem Solving - 1 hour

1. https://leetcode.com/problems/3sum/
2. Given 2 integers, a numerator and denominator, return the recurring part of quotient in the format 0.33333 => 0.(3), 0.12341287361238238238238 => 0.12341287361(238). https://leetcode.com/problems/fraction-to-recurring-decimal/

Was able to solve both of them. More than a functional code, the focus on this round was how I approached the problem.

Round 3 - Low-Level Design - 1 hour
How would you design a Key-Value store with a capacity of 10K keys with following requirements

• Put -> Add keys to the store with a specified TTL (time to live). If capacity is hit the store should be able to efficiently evict keys and add new keys. Free to design your own eviction logic
• Get -> Get the value of the key and whether active/expired.

This round again required a fully working and a functional code with proper code design. Was able to do it. Post which I was asked various scenarios and how I would design the code - what kind of Design Patterns would I use.

Round 4 - High-level Design - 1hour
Design Customer Segmentation Platform.
Users:500 mn
Inputs: Different types of events like browsing history, orders ...
Input Volume : 5bn events
Segment: 100 segments
User can also belong multiple segment

• We need to consume diff types of events.
• We need to allow diff rules for creating segments.
• Then enrich segments and store data.

Had a healthy discussion with the interviewer here. The interviewer seemed impressed at the end of the round. Focus was primarily on what functional/non-functional requirements I chose to design and then how to design the APIs, DB schema and the system components.

The HR told post this round that it was a positive feedback overall.

Round 5 - Hiring Manager - 1hour

1. Deep discussion of projects.
2. Some behavioural questions.
3. How would you design an SLA service? In other words, design a service which alerts when SLA of a job is breached. How would you handle scalability issues.

I messed up this round a little and was the cause of rejection. The HM picked on some of my older projects which I was not very well prepared for.

Notes

• Expectation of an SDE 4 in Swiggy is 40-50 % coding and rest on participating in System Design, helping team members etc. and thus the interviews focused more on design and leadership skills.
• Overall it was quite a postive experience. All interviewers were friendly, will keep you comfortable, listen to your thoughts.