Kotak SDE-1 BarRaiser - 1st round
Summary
Cleared the interview process which consisted of three rounds: DSA, LLD, and Distributed Systems.
Full Experience
Applied for Kotak SDE-1 role (India). I filled out a google form posted by a recruiter on LinkedIn. Got an email that I was shortlisted and below were the questions asked and format of interview.
90 mins interview.
3 rounds.
Round 1 - DSA (2 Questions)
Round 2 - LLD
- Design a food delivery system.
- Main focus was on DB choice for restaurant browsing.
- Design DB schema.
- APIs for any one module
Round 3 - Distributed Systems
- What is idempotency?
- What are LOCKS and where are they used?
- Why are replicas needed and what are the tradeoffs that come with it?
Interview Questions (6)
Plus One
You are given a large integer represented as an integer array digits, where each digits[i] is the ith digit of the integer. The digits are ordered from most significant to least significant in left-to-right order. The large integer does not contain any leading 0's.
Increment the large integer by one and return the resulting array of digits.
Climbing Stairs
You are climbing a staircase. It takes n steps to reach the top.
Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
Design Food Delivery System
Design a food delivery system. Focus on database choices for restaurant browsing, design the database schema, and define APIs for at least one module.
Idempotency Concept
Explain what idempotency is and why it matters in distributed systems.
Understanding Locks
What are locks and where are they typically used in system design?
Replicas Tradeoffs
Why are replicas necessary in distributed systems and what tradeoffs do they introduce?