HashedIn by Deloitte SDE-1 Interview Experience | Off campus lateral Hiring 2025
- Location
- Kolkata
- Posted
- 2 Mar 2026
Summary
I successfully applied for an SDE-1 role at HashedIn by Deloitte through a referral. The interview process, spanning multiple technical and behavioral rounds, concluded with me receiving an offer within a month. Key technical areas covered included DSA, System Design (HLD/LLD), and OOPs.
How it went
Profile :
- CSE passout 2024 from a Tier-3 collage
- 10 Months of Startup experience in MERN
- I had a TCS Digital offer
Timelinme :
- Applied through a referral for lateral opening, though they focus on campus hiring for SDE1.
- after few months received a form to choose preferred location for hiring drive. I choosed kolkata. >> Nov 2024 🗓️
- Got the in person invite for the whole process in a single day. >> 27th Jan 2025 🗓️
- The process was divided in : OA consisted of LC - (easy + Medium + Hard), 2 Tech interviews, final behavioral round.
- Got the offer in a month. 🎉 >> Feb 2025 🗓️
Interview rounds
First Tech Round :
- DSA questions to solve in their system - Merge sort on LinkedList, Binary Tree related problem.
- Basic HLD questions on Scalability, SQL vs NoSQL database.
- Some generic OOPs questions etc.
Second Tech Round :
- Firstly got few rapid questions from resume on past experience
- Then asked to design a Library Management System (LLD)
- Long discussion on functions needed, optimal algorighn for insertion, deletion, which DB I'll choose and why
- Asked how to search optimally on the way, then discussion on Trie Data Structure
- Then got a DSA question, Meeting room related to Merge intervals. Long discussion on optimal approach.
Behavioral Round :
- Few questions on why I'm joining the company, leaving the other one.
- some casual questions/discussion on collage, family etc.
check this link for detailed explanation : Yt link
Questions asked (5)
- 01
Merge Sort on Linked List
Data Structures & Algorithms · Medium
I was asked to implement Merge Sort on a Linked List within their system.
- 02
HLD: Scalability and Database Comparison
System Design
I faced basic High-Level Design questions focusing on system scalability and had a discussion comparing SQL vs NoSQL databases.
- 03
Low-Level Design: Library Management System
System Design · Hard
I was asked to design a Library Management System (LLD). The discussion covered necessary functions, optimal algorithms for insertion and deletion, rationale for choosing a specific database, and methods for optimal searching, including a discussion on Trie Data Structure.
- 04
Meeting Room Problem (Merge Intervals)
Data Structures & Algorithms · Medium
I encountered a DSA question related to the Meeting Room problem, which often involves the Merge Intervals pattern. There was a long discussion on the optimal approach.
- 05
Behavioral: Career Motivation and Fit
Behavioral
I was asked several behavioral questions including why I am joining the company, reasons for leaving my previous opportunity, and some casual questions about my college and family background.