Mozilla Interview Questions & Reviews
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Updated Feb 7, 2012 – Interview questions and reviews posted anonymously by interview candidates.
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Difficulty Rating [?] Based on 14 ratings 
“Average” Interview
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Interview Experience [?] Based on 14 ratings
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| 1–10 of 14 Mozilla Interviews | Sort by |
Systems Administrator at Mozilla
Posted Feb 7, 2012
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4.0
Difficult Interview
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Overall Negative Experience
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Interviewed and No Offer
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Interviewed Oct 2011 (took 2 weeks)
Although slow-moving, the initial HR screenings went well. The first mildly technical interview was handled by the group manager, and it went very well. The full technical interview was postponed, before being given to a random team member who did not have interviewing skills or a desire to perform the interview. There were lots of sullen grunts and overall a feeling that it was a complete waste of his time and skills to have to interview people. I don't believe there were any prepared questions, and he was not paying full attention (frequently trailing off in mid-sentence or asking me to repeat myself because he wasn't listening.)
Needless to say, they did not offer to follow up.
Interview Questions
Other Details
I got the interview through an Employee Referral and the interview consisted of a Phone Interview.
Helpful Interview?
Yes |
No
Inappropriate?
QA Engineer at Mozilla
Posted Dec 24, 2011
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4.0
Difficult Interview
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Overall Positive Experience
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Received and Accepted Offer
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Interviewed Jul 2011 in Mountain View, CA (took 2 months)
Overall, the interview process went very smoothly. 4 phone interviews, 7 45 minute on-site interviews, and 1 lunch interview. Every single person I talked to friendly and highly open to questions I had. My interview process is summarized below.
Upon initially submitting my resume to Mozilla Careers Website, I was contacted within a few days to setup an initial phone screening with the recruiter. This interview focused on no technical details, just questions about my interests in Software Quality Assurance. Next, the recruiter was interested in having me conduct a technical phone interview with one of the QA Engineers. This interview focused on questions on testing basics, manual testing vs. test automation, and some questions about my resume. I then had another phone interview with a QA manager, who targeted similar areas to the past interviewer along with asking a few software process questions. Then, I had a fourth phone interview with a QA Engineer who was a recent graduate of college. He focused on questions in open source community area. Next, I was flown out to Mountain View, CA with my flight, hotel, and transportation, and miscellaneous expenses covered. At this interview, I had 7 45 minute interviews and a lunch interview with some QA Engineers/Leads, QA Director, and a software development engineer. Questions in these interviews touched on a vast variety of topics, including quality assurance, my resume, technological knowledge, debugging, testing on desktop vs. mobile, etc. Upon finishing this on-site interview, I was contacted two weeks later with an offer.
Interview Questions
Negotiation Details
Didn't have negotiate, as I thought the offer given was excellent.
Other Details
I Applied Online and the interview consisted of a Phone Interview, a 1:1 Interview, a Presentation, a Skills Test and a Personality Test.
Helpful Interview?
Yes |
No
Inappropriate?
Web Development Interm at Mozilla
Posted Dec 18, 2011
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3.0
Average Interview
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Overall Positive Experience
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Received and Accepted Offer
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Interviewed Oct 2011 in Mountain View, CA (took 1+ week)
Three phone screens. Two with web developers, one with director of web development. A college recruiter helped set up all of my interviews after I talked to her at a barcamp and emailed a resume. My first interview went really well. I talked a lot about my projects, was asked a few simple questions about web development basics, and asked about their workflow. Mozilla has a very open and free culture and the people are very nice.
Interview Questions
Negotiation Details
I was given a stack of papers and filled it out. Got to choose from a list of laptops. This is a good enough opportunity that I wouldn't bother to negotiate anything.
Other Details
I got the interview through a Recruiter and the interview consisted of a Phone Interview.
Helpful Interview?
Yes |
No
Inappropriate?
Support at Mozilla
Posted Nov 17, 2011
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4.0
Difficult Interview
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Overall Negative Experience
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Interviewed and No Offer
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Interviewed Oct 2011 (took 7 weeks)
The whole process was not very time efficient at all. So i applied online for a position in my city, and received an email from HR. They scheduled a 30-45 minute phone interview that was to take place a week from then. Like someone else has mentioned, it was very hard to hear/understand the person on the other end of the line during the phone interview because they were 3 time zones away and most likely using VoIP. A couple days after the phone interview I emailed the HR lady to see when they would make a decision. She said she was meeting with my interviewer now and would get back to me next week. Next week came and went, so I sent another email the week after that because she never got back to me. Again not hearing a response for days, I figured i simply did not make it.
Then randomly the week after that, they email me asking if I would be available for an interview since the team members were visiting from California. I said yes, and i was scheduled for 2 and a half hours of interviews with 5 people. The interviews consisted of half hour each, 2 of them were in person, and 2 were on an ipad which was very awkward to hold and talk into using FaceTime. Most of the interviewers also said the same thing over and over, talked about the position and the company and asked me about myself. They really could have condensed it into one group interview, because they basically overlapped and it was very redundant having to repeat myself for 2 hours. I was given tours of the office multiple times, everyone was pretty friendly.
During my scheduled interview time they couldn't seem to get a hold of one team member, or locate where he was. So they simply told me not to worry about it, and I would simply not have to interview with that person. So an hour after getting home, I receive a phone call from California telling me that 'oh you missed an interview and soandso would really like to interview you, could you please come back at 5 'oclock.' Of course I was a little annoyed because i again had to travel to their office in a couple hours for another interview with a person who was not there for the scheduled time. So i canceled my other appointments and went back in, since I assumed it was a good sign. The interview was another 25-30 minutes, and was exactly like the rest of them. I got in contact with the HR person again after to see when a decision would be reached. She said she would meet with the team members next week, so she would be sure to let me know of a decision soon, and to give her at least a week and half.
So... 2 weeks later I e-mail her after not hearing anything, and she responds with 'oh you must not have got my e-mail i sent 2 weeks ago (what?), but we are not going forward with anyone since no one was a good match. The whole process was well over a month, and very tedious. They were nice people, but it was just handled terribly.
Interview Questions
Other Details
I Applied Online and the interview consisted of a Phone Interview and a 1:1 Interview.
Helpful Interview?
Yes |
No
Inappropriate?
Network Engineer at Mozilla
Posted Nov 4, 2011
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3.0
Average Interview
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Overall Neutral Experience
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Interviewed and No Offer
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Interviewed Aug 2011 in Mountain View, CA (took 4+ weeks)
Had multiple phone interviews.....4 if I remember correctly. Each of them went extremely well and the interviewers were very cordial. Some of the engineers grilled me a bit technically, but I expected that.
After doing well on all phone interviews I was flown to Mountain View for several face-to-face interviews with different team members. Some of the interviews were with folks who had already interviewed me over the phone, but I also had a few with individuals from other groups. All interviews seemed to go very well. I was asked several technical questions dealing with different scenarios. I did very well technically.
The engineering team took me to lunch and it was pleasant. After lunch it seemed that they rushed me through the rest of the process and got me back on my way home quickly.
I received an email a few days later informing me that everyone thought highly of my experience and technical skill level but ultimately did not believe I was a fit for the team. They told me that was all the information they could give me. I am guessing it was because I was too conservative and too old for them.
I even emailed one of the engineers a few days later asking him to give me some feedback on the interview so that I could work on any weaknesses. He did not even respond to me......very strange.
Interview Questions
Other Details
I got the interview through a Recruiter and the interview consisted of a Phone Interview and a 1:1 Interview.
Helpful Interview?
Yes |
No
Inappropriate?
Web Developer at Mozilla
Posted Aug 17, 2011
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2.0
Easy Interview
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Overall Negative Experience
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Interviewed and No Offer
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Interviewed Aug 2011 (took 2+ weeks)
Applied for the position after it was posted to several cities on Craigslist. A week later, a recruiter emailed me to set up an initial phone screening. During the screening, I was asked to rate my skills with several technologies, but without actually being given a metric (years of experience? novice/intermediate/expert?).
An initial phone interview with a developer was scheduled. It was then cancelled on the day of the interview and rescheduled, with the same developer, more than a week later. The phone interview finally happened, and it suffered from whatever VOIP/Skype service was being used from seven timezones away. I frequently needed to ask for clarification of questions, and there were several awkward pauses.
The content of the interview was very vague. I was asked to describe how I would optimize a web application (with no further context provided), and then asked some non-specific questions about technologies I had prior experience with, despite the job not involving those technologies.
One question was literally, "How about Google App Engine?" I had to double-check to see if that was the whole question or if I'd missed something. After I briefly described my experience with it, the interviewer revealed that he hated it and I found myself in the position of defending my experience with it despite not having worked with it for several years.
Ultimately, the interviewer cut the interview short and announced he was on his way to a pub.
Almost a week later, I received a form email from the recruiter explaining that they were not going to move forward.
Interview Questions
Other Details
I Applied Online and the interview consisted of a Phone Interview.
Helpful Interview?
Yes |
No
Inappropriate?
Software Engineer at Mozilla
Posted Jul 25, 2011
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1.0
Very Easy Interview
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Overall Negative Experience
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Interviewed and No Offer
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Interviewed Jul 2011 (took 2 days)
They threw people who I would not work with, into the interview just to fill time. I work in an area that is evolving quickly and which I am an expert at. They said they are looking to hire many people and I know that people my skill set are extremely hard to find right now. So it was rather funny that they did not offer me the job with no explanation.
I think the company has too many people working at it, and they don't have enough to do. They said they are hiring 500 more people, I find that somewhat unfathomable.
Interview Questions
Other Details
The interview consisted of a Phone Interview and a 1:1 Interview.
More Mozilla Software Engineer Interviews
Helpful Interview?
Yes |
No
Inappropriate?
Software Engineer at Mozilla
Posted May 17, 2011
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3.0
Average Interview
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Overall Neutral Experience
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Interviewed and No Offer
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Interviewed Mar 2011 in Mountain View, CA (took 1 week)
A recruiter contacted me after I was referred by an employee. He asked about what roles I'd be interested in,what the biggest project I'd worked on was. I later received an e-mail saying that I was not going to be a great fit.
Interview Questions
Other Details
I got the interview through an Employee Referral and the interview consisted of a Phone Interview.
More Mozilla Software Engineer Interviews
Helpful Interview?
Yes |
No
Inappropriate?
Product Marketing Manager at Mozilla
Posted Apr 21, 2011
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3.0
Average Interview
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Overall Neutral Experience
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Interviewed and No Offer
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Interviewed Oct 2010 (took a day)
First interviewed with recruiter that went through the basics. Next was a phone interview with hiring manager. They asked thorough questions and asked some creative ones too - for instance, what would you do with a brick.
Interview Questions
Other Details
The interview consisted of a Phone Interview.
Helpful Interview?
Yes |
No
Inappropriate?
Recruiter at Mozilla
Posted Feb 9, 2011
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4.0
Difficult Interview
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Overall Positive Experience
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Received and Accepted Offer
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Interviewed Nov 2010 in Mountain View, CA (took 2 weeks)
Interviewed with some of the team and other parts of the organization that I would support. Everyone was very nice and had great questions. Everyone seemed to love their job and was close to their peers.
Other Details
I got the interview through an Employee Referral and the interview consisted of a 1:1 Interview.
Helpful Interview?
Yes |
No
Inappropriate?
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