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Mozilla Logo Mozilla · IT - Software Development

Firefox Security Student Worker

Germany, Berlin Employment contract · Job Posted June 14, 2026
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Job Description

The Firefox Application Security Team sits at the center of Firefox, collaborating with the whole organization through fundamental security projects that range from architecture hardening, and security research to web security. Our team applies foundational platform improvements as well as automation to scale our work such that it serves all of Firefox and hundreds of millions users worldwide.

Job Responsibility

  • Learn how our team secures the web and help improve the browsing experience for everyone on the web
  • Get support from your manager and your assigned mentor
  • Learn and partake in regular team processes that help secure a mature product
  • Help investigate security issues with guidance and write test cases using HTML and JavaScript
  • Improve existing team processes using Python or expand web security features in Firefox using C++
  • Get the chance to learn how to work with the wider open source community
  • Optionally, propose and drive your own projects

Requirements

  • You are enrolled in a university in Germany and are willing to occasionally visit our office in Berlin a few times per year
  • You do not need prior security experience, but you should bring either web development, Python, or systems programming experience, and enjoy careful technical investigation
  • You are comfortable communicating in English in writing and during meetings

Nice to have

  • Participation in student tech communities or experience in documentation, teaching, or mentoring
  • Experience with C/C++ and familiarity with the concept of memory safety
  • Contributions to open source projects or other group projects
  • Understanding of web security concepts

What we offer

  • Flexible working hours
  • Competitive compensation depending on the number of hours
  • Flexible work environment (majority of Mozillians work remotely)
  • Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents)
  • Reimbursement for professional development (up to $3,000/year)
  • A work setup including the latest hardware and software of your choice
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