CommVault Interview Experience
Interview Experience
On 6th August CommVault visits our campus. On GeeksforGeeks had a lot of interview archives and that helped me a lot to learn about the company. I read almost every experi...
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On 6th August CommVault visits our campus. On GeeksforGeeks had a lot of interview archives and that helped me a lot to learn about the company. I read almost every experience and gives me a boost to write about my experience too. There were 5 Rounds of the process. Round 1 (Screening Round): This round was to filter the majority out. In this round almost 1300+ students take part, and they filter 109 out of them, and I was one of them. In this round, they have their portal GeeekAssess where the arrangement an online round. In this round, the questions were pretty simple though you have a language option between C++/Java you can do accordingly. There were two sections Aptitude and Core Java. The questions were basics. Round 2 (Coding Round): This was a coding round(80 Mins) and the questions were simple as such. 0/1 Knapsack Variation Merge two sorted lists Print the minimum number of swaps required to rearrange a string of Cs and Ds, such that no two C or D are consecutive. Simple string manipulation After this round 17 students were shortlisted for the
next round. I was shortlisted too. Round 3 (System Design): This was actually more of a stress test round. They gave us a problem to implement File System using any data structures. They gave us a skeleton code where the body of the code was created and some functions were defined. We have to implement the file system using any data structures. They gave us time to think for approx One and a half hours to come up with a design to implement. Then on that bases also they were throwing some students out. I was able to do that round and my code was running fine. Operations Required for the File System: CreateFIle() ReadFIle() ReplaceFileContent() DeletFile() PrintAllFiles() AddFileLink() // Same as Symlink (hard-symbloic-link) in Linux MoveFile() This round starts at 10:00 AM and ends at 3:00 PM. After this round they start sending mail to shortlisted students individually I was not able to crack it. That was not my day but some of our university students were able to give an interview.
HR round is followed by Interview round. In the interview, they were more focused on Operating systems and DBMS. And very less of Coding. Thank you very much.
About This Question
This is a candidate experience report from a commvault interview for a data science role during the recruiter round reported in 2025.
It covers the following topics: Strings, Dynamic Programming, System Design, Os .
Difficulty rating: Easy
More Commvault Interview Questions
About Commvault Interview Reports
This question was reported by a candidate who interviewed at Commvault. LeakCode aggregates interview reports from 10+ sources, including 1Point3Acres, Glassdoor, LeetCode Discuss, Blind, Reddit, Indeed, and Nowcoder. Each report is translated where necessary, deduplicated against existing entries, and tagged by company, role, round type, and reporting date.
Use this question as one calibration data point, not a memorization target. Companies typically rotate their question pools every 2-4 months; the exact wording of a 2024 question may differ from what you encounter today. The underlying pattern, difficulty level, and follow-up depth at Commvault are the higher-signal extractions to take from this report.
For broader preparation context, the Commvault interview process typically includes a recruiter screen, one or two technical phone screens, and a 4-5 round on-site loop covering coding, system design (at L4+ levels), and behavioral. Reports tagged on LeakCode show the round-by-round distribution and typical difficulty calibration. To browse questions filtered by round type and seniority, use the company hub linked above.
How To Practice This Type of Question
Solve similar problems on LeetCode under timed conditions (25-35 minutes per medium difficulty). The goal is pattern recognition: recognize the underlying technique (sliding window, two-pointer, BFS, memoized recursion, etc.) within 60-90 seconds of reading. Strong candidates verbalize their hypothesis out loud before coding, then iterate based on feedback. Weak candidates dive into implementation immediately, lose time on the wrong approach, and run out of time for follow-ups.
Companies update their question pools every 2-4 months. The exact wording of any given question may have been retired by the time you interview. Focus your prep on the pattern, not the specific problem. The patterns that appear in Commvault reports consistently are the ones worth investing in; one-off niche problems are not.
During Your Commvault Round
Apply the standard interview round template: clarify requirements (2-3 minutes), state your approach out loud and confirm direction with the interviewer (3-5 minutes), code with narration (15-25 minutes), test with concrete examples including edge cases (5 minutes), discuss optimization or trade-offs if time permits (5 minutes). This template is universally accepted across FAANG and adjacent companies; deviating from it produces weaker interviewer feedback signal.
The single most predictive failure mode in Commvault reports tagged "no hire": not asking clarifying questions. Interviewers are explicitly trained to weight this. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into code immediately. The clarifying-question check is often the first signal recorded in the interviewer's written notes.