Derived from 1 submission for ALL. Format details may vary across different teams or locations.
Process Overview: The hiring process for Senior SDE roles consists of two technical coding rounds followed by a comprehensive System Design round.
Technical Rounds:
System Design Round:
The candidate went through a rigorous interview process consisting of two technical rounds and one design round. The process was fast-paced, and the candidate was ultimately selected for the SDE-3 role.
The first round was an elimination round focusing on data structures and algorithms, consisting of two medium-hard LeetCode problems.
Find the maximum length of consecutive 1s by flipping at most K 0s in an array of 0s and 1s.
Calculate the maximum amount of money a thief can steal from houses arranged in a circle, given they cannot steal from consecutive houses.
The second round focused on data structures and algorithms, involving three problems ranging from string manipulation to interval scheduling.
Find all palindromic substrings of a given string.
Anagram-based implementation problem requiring a custom hash function.
Calculate the minimum number of sprinklers required to water a garden represented as a straight line, given specific power ranges for each sprinkler.
This round covered both High-Level Design (HLD) and Low-Level Design (LLD). The candidate was asked to design a stock trading system similar to Zerodha, covering functional and non-functional requirements, database schema, and class design, followed by deep-dive questions on scalability and fault tolerance.
Design a stock trading system (Zerodha-like).
Discuss data recovery strategies if a cluster fails in one region.
Design a scalable notification and prompt framework for stock fluctuations.
Discuss limitations of design based on stock exchange API availability and circuit breaker implementation.
InterviewDigest