I applied online. The process took 3 months. I interviewed at Mozilla (Toronto, ON) in Aug 2018
Interview
The interview process consisted of a recruiter screening followed by a timed HackerRank challenge, two video interviews, an on-site with four 1-on-1 interviews and then a final call with the recruiter to discuss the outcome.
Interview questions [2]
Question 1
Most of my interview questions revolved around making edits to pre-existing code or reviewing diffs in pre-existing code. There were a few moments of talking through solutions to bugs and reviewing code that I had previously written in the interview process.
I also spoke with my interviewers at length about why I wanted to work for Mozilla as well as privacy, performance, and an open internet. I think I got lost in conversation with a lot of them and I think that may have worked in my favor.
I applied through other source. The process took 4 weeks. I interviewed at Mozilla (California, MD)
Interview
It was not that much good or bad. The interview hiring process took too much long. After applying for role it took a month to get response for next stage interview.
Initial interview with someone from HR and then multiple rounds of technical interviews with usually two interviewers. Some questions are quite hard. Interviews usually take 45 mins, but sometimes it takes longer.
Interview questions [1]
Question 1
They asked about a difference between threads and processes
I applied through college or university. The process took 1 day. I interviewed at Mozilla (Toronto, ON) in Feb 2025
Interview
The interview process was in the form of a behavioural part and a technical part, similar to any other software engineering role. It was two hours. They are strict with their scheduling, so be ready to interview fast.
Interview questions [1]
Question 1
They asked me leetcode question which was a hasp/two pointer based quesition, similar to three sum.
Software Engineer applicants have rated the interview process at Mozilla with 3.1 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 28% positive. To compare, the company-average is 41.2% positive. This is according to Glassdoor user ratings.
Candidates applying for Software Engineer roles take an average of 23 days to get hired, when considering 18 user submitted interviews for this role. To compare, the hiring process at Mozilla overall takes an average of 33 days.
Common stages of the interview process at Mozilla as a Software Engineer according to 18 Glassdoor interviews include:
Phone interview: 43%
One on one interview: 24%
Skills test: 14%
Presentation: 10%
Drug test: 5%
IQ intelligence test: 5%
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