Mozilla

Senior Software Engineer, Localization

Mozilla

full-time

Posted on:

Location Type: Remote

Location: Remote • 🇧🇪 Belgium

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Salary

💰 €55,000 - €74,300 per year

Job Level

Senior

Tech Stack

JavaScriptPython

About the role

  • Contribute to the development of Python and JavaScript libraries (such as moz-l10n) and tools that support Mozilla’s localization infrastructure.
  • Collaborate with engineers and program managers to design and implement new Pontoon features, across both the front-end and back-end.
  • Improve internationalization within the Firefox codebase to make features more adaptable and accessible across languages and regions.
  • Contribute to discussions shaping Mozilla’s positions on internationalization and localization standards.
  • Engage with our community of volunteer developers and localizers to support and guide Mozilla’s localization efforts.
  • Collaborate effectively with teammates and internal clients across regions and time zones.

Requirements

  • Strong experience developing and maintaining web applications and tools using Python and JavaScript.
  • Solid understanding of web technologies, APIs, and modern development workflows.
  • Experience with internationalization (i18n) and localization (l10n) concepts, tools, or workflows.
  • Ability to collaborate effectively in a distributed team, across time zones and disciplines.
  • Excellent communication skills, with an emphasis on clarity and working across technical and non-technical roles.
  • Commitment to our values: Welcoming differences, Being relationship-minded, Practicing responsible participation, Having grit.
Benefits
  • 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)

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
PythonJavaScriptweb applicationsAPIsinternationalizationlocalizationdevelopment workflows
Soft skills
collaborationcommunicationclarityrelationship-mindedresponsible participationgrit