Know ATS Score
CV/Résumé Score
  • Expertini Resume Scoring: Our Semantic Matching Algorithm evaluates your CV/Résumé before you apply for this job role: Senior Systems Software Engineer.
France Jobs Expertini

Urgent! Senior Systems Software Engineer Job Opening In Paris – Now Hiring Mozilla

Senior Systems Software Engineer



Job description

Senior Systems Software Engineer

at Mozilla Corporation Team: Firefox Locations: Remote France, Remote Germany, Remote UK To learn the Hiring Ranges for this position, please select your location from the Apply Now dropdown menu.

To learn more about our Hiring Range System, please click this


Why Mozilla?


Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years.

We make pioneering brands like Firefox, the privacy-minded web browser.

Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies.

Our work focuses on diverse areas including AI, social media, security and more.

And we’re doing this while never losing our focus on our core mission – to make the internet better for people.


The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation.

This means we aren’t beholden to any shareholders — only to our mission.

Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.


About this team and role:


The Performance Tools team builds frameworks and tools that help engineers measure and improve performance across Mozilla products.

We’re a distributed team based in North America and Europe, supporting both internal Mozilla engineers and the broader web developer community through tools like the Firefox Profiler.


In this role, you will be responsible for low-level programming of the Firefox Profiler and other tools.

Your focus will be on delivering an effective toolset for Firefox developers looking to track down and seize every opportunity to improve the quality of experience for our users.

You will work closely with performance experts to identify and surface the most valuable measurements across a variety of platforms.


What you’ll do:

  • Develop new features for the Firefox Profiler that will provide browser engineers and web developers with insight to improve the experience for their users.

  • Expand the breadth of data captured by the Firefox Profiler without compromising on performance.

  • Engage with the performance team efforts such as bug triage and strategy.

  • Engage with other Firefox engineers to help them learn how to use our tools efficiently, and develop projects to serve them better.

  • Promote and encourage the use of our performance tools within and beyond Mozilla by writing and talking about them.

  • Engage with our community and mentor volunteers contributing to the codebase.
  • What you’ll bring:

  • 5+ years of experience in systems software engineering using C++.

  • 1+ year of experience in Rust.

  • Expertise in at least one of the following operating system APIs and familiarity with the others: Windows/Linux/macOS/Android.

  • Experience working on and debugging large multi-threaded applications and memory management.

  • Strong and respectful communication skills and ability to collaborate across engineering teams.

  • Familiarity with any of the following skills would be a plus: JavaScript, Java, Android development, Python.

  • Commitment to our values:
  • Welcoming differences

  • Being relationship-minded

  • Practicing responsible participation

  • Having grit
  • What you’ll get:

  • Generous performance-based bonus plans to all eligible employees - we share in our success as one team

  • Rich medical, dental, and vision coverage

  • Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)

  • Quarterly all-company wellness days where everyone takes a pause together

  • Country specific holidays plus a day off for your birthday

  • One-time home office stipend

  • Annual professional development budget

  • Quarterly well-being stipend

  • Considerable paid parental leave

  • Employee referral bonus program

  • Other benefits (life/AD&D, disability, EAP, etc.

    - varies by country)

  • Required Skill Profession

    Computer Occupations



    Your Complete Job Search Toolkit

    ✨ Smart • Intelligent • Private • Secure

    Start Using Our Tools

    Join thousands of professionals who've advanced their careers with our platform

    Rate or Report This Job
    If you feel this job is inaccurate or spam kindly report to us using below form.
    Please Note: This is NOT a job application form.


      Unlock Your Senior Systems Potential: Insight & Career Growth Guide


    • Real-time Senior Systems Jobs Trends in Paris, France (Graphical Representation)

      Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph below. This graph displays the job market trends for Senior Systems in Paris, France using a bar chart to represent the number of jobs available and a trend line to illustrate the trend over time. Specifically, the graph shows 4619 jobs in France and 1525 jobs in Paris. This comprehensive analysis highlights market share and opportunities for professionals in Senior Systems roles. These dynamic trends provide a better understanding of the job market landscape in these regions.

    • Are You Looking for Senior Systems Software Engineer Job?

      Great news! is currently hiring and seeking a Senior Systems Software Engineer to join their team. Feel free to download the job details.

      Wait no longer! Are you also interested in exploring similar jobs? Search now: .

    • The Work Culture

      An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at Mozilla adheres to the cultural norms as outlined by Expertini.

      The fundamental ethical values are:
      • 1. Independence
      • 2. Loyalty
      • 3. Impartiality
      • 4. Integrity
      • 5. Accountability
      • 6. Respect for human rights
      • 7. Obeying France laws and regulations
    • What Is the Average Salary Range for Senior Systems Software Engineer Positions?

      The average salary range for a varies, but the pay scale is rated "Standard" in Paris. Salary levels may vary depending on your industry, experience, and skills. It's essential to research and negotiate effectively. We advise reading the full job specification before proceeding with the application to understand the salary package.

    • What Are the Key Qualifications for Senior Systems Software Engineer?

      Key qualifications for Senior Systems Software Engineer typically include Computer Occupations and a list of qualifications and expertise as mentioned in the job specification. Be sure to check the specific job listing for detailed requirements and qualifications.

    • How Can I Improve My Chances of Getting Hired for Senior Systems Software Engineer?

      To improve your chances of getting hired for Senior Systems Software Engineer, consider enhancing your skills. Check your CV/Résumé Score with our free Tool. We have an in-built Resume Scoring tool that gives you the matching score for each job based on your CV/Résumé once it is uploaded. This can help you align your CV/Résumé according to the job requirements and enhance your skills if needed.

    • Interview Tips for Senior Systems Software Engineer Job Success
      Mozilla interview tips for Senior Systems Software Engineer

      Here are some tips to help you prepare for and ace your job interview:

      Before the Interview:
      • Research: Learn about the Mozilla's mission, values, products, and the specific job requirements and get further information about
      • Other Openings
      • Practice: Prepare answers to common interview questions and rehearse using the STAR method (Situation, Task, Action, Result) to showcase your skills and experiences.
      • Dress Professionally: Choose attire appropriate for the company culture.
      • Prepare Questions: Show your interest by having thoughtful questions for the interviewer.
      • Plan Your Commute: Allow ample time to arrive on time and avoid feeling rushed.
      During the Interview:
      • Be Punctual: Arrive on time to demonstrate professionalism and respect.
      • Make a Great First Impression: Greet the interviewer with a handshake, smile, and eye contact.
      • Confidence and Enthusiasm: Project a positive attitude and show your genuine interest in the opportunity.
      • Answer Thoughtfully: Listen carefully, take a moment to formulate clear and concise responses. Highlight relevant skills and experiences using the STAR method.
      • Ask Prepared Questions: Demonstrate curiosity and engagement with the role and company.
      • Follow Up: Send a thank-you email to the interviewer within 24 hours.
      Additional Tips:
      • Be Yourself: Let your personality shine through while maintaining professionalism.
      • Be Honest: Don't exaggerate your skills or experience.
      • Be Positive: Focus on your strengths and accomplishments.
      • Body Language: Maintain good posture, avoid fidgeting, and make eye contact.
      • Turn Off Phone: Avoid distractions during the interview.
      Final Thought:

      To prepare for your Senior Systems Software Engineer interview at Mozilla, research the company, understand the job requirements, and practice common interview questions.

      Highlight your leadership skills, achievements, and strategic thinking abilities. Be prepared to discuss your experience with HR, including your approach to meeting targets as a team player. Additionally, review the Mozilla's products or services and be prepared to discuss how you can contribute to their success.

      By following these tips, you can increase your chances of making a positive impression and landing the job!

    • How to Set Up Job Alerts for Senior Systems Software Engineer Positions

      Setting up job alerts for Senior Systems Software Engineer is easy with France Jobs Expertini. Simply visit our job alerts page here, enter your preferred job title and location, and choose how often you want to receive notifications. You'll get the latest job openings sent directly to your email for FREE!