Senior Software Engineer (Localization) at Mozilla

Introduction

Do you have a passion for internationalization and localization and are skilled in engineering? Join our team at Mozilla as a Senior Software Engineer and contribute to a range of localization projects and technologies while working with a diverse team of professionals. We are a global non-profit organization that believes in the power of the internet to create positive change and our mission is to ensure it remains open and accessible to all. With a presence in over 100 countries and millions of users worldwide, we value diversity, collaboration, and innovation in our dynamic, inclusive, and supportive work environment.

About Mozilla

Mozilla is a global non-profit organization that advocates for a free and open web. With a presence in over 100 countries and millions of users worldwide, we are a leader in the tech industry. We value diversity, collaboration, and innovation, and we offer a dynamic, inclusive, and supportive work environment for our employees.

Role and Responsibilities

• Develop Python and JavaScript libraries and tools to support Mozilla's localization infrastructure.
• Collaborate with engineers and program managers to design and implement new features for Pontoon, our Translation Management System.
• Improve internationalization within the Firefox codebase to enhance the user experience across different languages and regions.
• Participate in discussions and decision-making processes related to 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.
• Familiarity 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.

Bonus Points

• Fluency in another language and understanding of linguistic diversity (e.g., grammar, plurals, text direction, and cultural conventions).
• Experience with open source development practices and community collaboration.
• Programming experience in Rust and C++.

Benefits

• Performance-based bonus plans for all eligible employees.
• Comprehensive medical, dental, and vision coverage.
• Generous retirement contributions with immediate vesting.
• Wellness days, country-specific holidays, and a day off for your birthday.
• One-time home office stipend.
• Professional development budget and quarterly well-being stipend.
• Paid parental leave.
• Employee referral bonus program.
• Other benefits may vary by country (life/AD&D, disability, EAP, etc.).

Apply here