Skip to contentSkip to footer
  • Community
  • Jobs
  • Companies
  • Salaries
  • For Employers
      Notifications

      Loading...

      Elevate your career

      Discover your earning potential, land dream jobs, and share work-life insights anonymously.

      employer cover photo

      Mozilla

      Part of The Mozilla Foundation

      Engaged Employer

      About
      Reviews
      Pay & benefits
      Jobs
      Interviews
      Interviews
      Related searches: Mozilla reviews | Mozilla jobs | Mozilla salaries | Mozilla benefits
      Mozilla interviewsMozilla Semi Senior Data Scientist interviewsMozilla interview
      Company Bowl sample

      Want the inside scoop on your own company?

      Check out your Company Bowl for anonymous work chats.

      Bowls

      Get actionable career advice tailored to you by joining more bowls.

      Followed companies

      Stay ahead in opportunities and insider tips by following your dream companies.

      Job searches

      Get personalized job recommendations and updates by starting your searches.

      Semi Senior Data Scientist Interview

      Aug 4, 2022
      Anonymous Interview Candidate
      No offer
      Positive experience
      Average interview

      Application

      I applied online. The process took 3 months. I interviewed at Mozilla in May 2022

      Interview

      Applied online, then a recruiter contacted me. I went through four rounds of interviews: Recruiting Call, Hiring Manager call, Technical Screener, and a virtual on-site that included a time-limited data analysis exercise and presentation. Recruiting did a very good job keeping me up-to-date on the interview process, and accommodating a last-second scheduling request. I was rejected after the on-site, but was given concrete feedback and suggestions for how to improve in the future, which was greatly appreciated.

      Interview questions [1]

      Question 1

      Standard Python and SQL. Just know that for the on-site you'll be coding in a Colaboratory notebook in Python, so if you're an R user, brush up on statsmodels.
      Answer question

      Mozilla interviews FAQs

      • Semi Senior Data Scientist applicants have rated the interview process at Mozilla with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 41.2% positive. This is according to Glassdoor user ratings.
      • Candidates applying for Semi Senior Data Scientist roles take an average of 90 days to get hired, when considering 1 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 Semi Senior Data Scientist according to 1 Glassdoor interviews include:

        Group panel interview:  20%

        Phone interview:  20%

        Presentation:  20%

        One on one interview:  20%

        Skills test:  20%

      • Here are the most commonly searched roles for interview reports -

        1. Software Engineer(48) ;
        2. Senior Software Engineer(31) ;
        3. Product Manager(16) ;
        4. Staff Software Engineer(9) ;
        5. Marketing(7) ;
        6. Manager(6) ;
        7. Senior Manager(6) ;
        8. Senior Product Manager(6) ;
        9. Software Developer(6) ;
        10. Engineering Manager(5) ;
        11. Intern(5) ;
        12. Program Manager(5) ;
        13. Staff Engineer(5) ;
        14. Data Scientist(4) ;
        15. Director(4) .


      Glassdoor

      • About / Press
      • Awards
      • Blog
      • Research
      • Contact Us
      • Guides

      Employers

      • Free Employer Account
      • Employer Center
      • Employers Blog

      Information

      • Help
      • Guidelines
      • Terms of Use
      • Privacy & Ad Choices
      • Do Not Sell Or Share My Information
      • Cookie Consent Tool
      • Security

      Work With Us

      • Advertisers
      • Careers
      Download the App

      • Browse by:
      • Companies
      • Jobs
      • Locations
      • Communities
      • Recent Posts

      Copyright © 2008-2026. Indeed, Inc. "Glassdoor," "Worklife Pro," "Bowls," and logo are proprietary trademarks of Indeed, Inc.

      Jobs at Mozilla

      3 jobs in United States
      Senior Data Engineer
      Remote
      ·
      $104K - $164K /yr
      (Employer provided)
      View job
      Staff Data Scientist, Firefox
      San Francisco, CA
      ·
      $163K - $218K /yr
      (Employer provided)
      View job
      Senior Data Engineer
      Remote
      View job
      View all Semi Senior Data Scientist Jobs