I applied through a recruiter. The process took 1 week. I interviewed at Wissen (Gurgaon, Haryana) in May 2025
Interview
They will ask more in depth question in java and react morely to check your fundamentals and indeoth knwoeldge they will also ask to code you various overidding methods wheter it is hashmap equals or hasset
I applied online. The process took 2 weeks. I interviewed at Wissen (Mumbai) in Apr 2026
Interview
There were total 4 rounds. 2 rounds taken by Wissen panel and 2 rounds by clients.
I had cleared 3 rounds but because I couldn't appear for the last client round due personal emegencies my profile got rejected.
Interview questions [1]
Question 1
1. Internal working of hashmap
2, Difference between innermap and identity hashmap and concurrent hashmap.
The interview process was fine overall, but it varied across different verticals. Initially, I went through four rounds of interviews and was selected. However, after the selection, the recruiter mentioned that they couldn’t match the CTC I had initially stated — even though I had made that clear at the beginning, and they had agreed to proceed.
Later, I had to attend another three rounds of interviews for a different vertical. Eventually, they confirmed my offer. However, the client interview process wasn’t completed at that stage, and I had to go through two additional client rounds even after joining.
3-4 round, 1 online test
Core Java
Multi threading
Database
Problem solving on arrays
Good experience ,standard questions,Depth theoretical questions
Prepare well on basics
Data structure standard logical questions
Troubleshooting,unix
Interview questions [1]
Question 1
MultiThreading question ,synchronisation ,object vs class level locking