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      Mozilla

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      Data Scientist Interview

      Apr 23, 2019
      Anonymous interview candidate
      No offer
      Neutral experience
      Easy interview

      Application

      I applied online. The process took 2 weeks. I interviewed at Mozilla

      Interview

      Simple SQL question posted in Hacker Rank about averages and sub queries. In less than a week received a generic email stating that I was no longer being considered. All in all pretty transparent and quick process.

      Interview questions [1]

      Question 1

      SQL question about averages with a nested subquery.
      1 Answer

      Other Data Scientist interview reviews for Mozilla

      Data Scientist Interview

      Nov 6, 2025
      Anonymous interview candidate
      No offer
      Positive experience
      Average interview

      Application

      I applied online. I interviewed at Mozilla

      Interview

      The interview process itself was pretty straight forward, even though the technical assessment covered a mix of SQL, Python, and stats questions, all structured across 3 different steps: an initial screening with the hiring manager, a dedicated SQL round, and a final combined Python & Stats evaluation.

      Interview questions [1]

      Question 1

      in sql group by question
      Answer question

      Data Scientist Interview

      May 19, 2021
      Anonymous interview candidate
      No offer
      Negative experience
      Easy interview

      Application

      I applied online. The process took 3 months. I interviewed at Mozilla in May 2021

      Interview

      They contacted me in March and ghosted me for a whole month before scheduling the first interview. Then regrettably I attended eight (yes, eight!) video interviews over a span of several weeks. I had to take time off work to attend their virtual on-site which was a full day. The recruiter took an average of two weeks to respond after each round. I'd figure I had been ghosted but then I'd get an email from them asking to schedule the next interview. Even after the final round of interviews I had to send two follow-up emails before receiving a standard email rejection template from the recruiter. No response when I asked for actual feedback. For a company that claims to put people first, the interview process proved to be the most inconsiderate experience I've ever had with a potential employer. If you're thinking about applying to Mozilla, consider whether you really want to spend several months meeting half the staff and being dragged through interview purgatory. Hard pass.

      Interview questions [1]

      Question 1

      Tell me about your current role
      Answer question
      9
      Mozilla response
      5y
      We're deeply sorry you had such a poor experience during your interviewing here. Your experience certainly is not acceptable to us, and we're committed to this never happening. In the past few weeks we've invested deeply into our recruiting team, in part to ensure your experience is an outlier; we’re also planning to evaluate our entire interview process in the upcoming quarter.

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