Mercury Systems Senior Software Engineer interview questions
based on 2 ratings - Updated Jun 10, 2026
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Mercury Systems interviews FAQs
Senior Software Engineer applicants have rated the interview process at Mercury Systems with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 50% positive. To compare, the company-average is 66.9% positive. This is according to Glassdoor user ratings.
Candidates applying for Senior Software Engineer roles take an average of 7 days to get hired, when considering 2 user submitted interviews for this role. To compare, the hiring process at Mercury Systems overall takes an average of 24 days.
Common stages of the interview process at Mercury Systems as a Senior Software Engineer according to 2 Glassdoor interviews include:
Phone interview: 50%
Presentation: 50%
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Really unorganized interview process. Felt like the interviews did not know what they wanted or really even had a formal interview process. IT was also really cringe when they said some stuff about cyber systems that were plain wrong
I applied through a recruiter. The process took 1 week. I interviewed at Mercury Systems (Jersey City, NJ) in Jan 2020
Interview
Interview had three rounds, first round was about algorithm, if you learned algorithm in the school or solved easy in the leetcode, it shouldn't be a problem.
the second was a technologies part which basically was the hard one, you did have to understand core java.
Interview questions [1]
Question 1
what is different between linkedList and ArrayList