CrawlJobs Logo
Mozilla Logo Mozilla · IT - Software Development

Senior Software Engineer (Localization)

· Job Posted April 05, 2026
Apply Position
Job Link Share

Job Description

The Localization Team manages the infrastructure that powers localization across all Mozilla products and services, and supports our global community of volunteer localizers. As a Senior Engineer, you’ll contribute to a range of Mozilla localization projects and technologies — from open source libraries like moz-l10n to Pontoon, our Django-based Translation Management System. You’ll also work on internationalization features that shape the experience of Firefox and other Mozilla products, and have the opportunity to engage with development of standards such as Unicode MessageFormat and DOM Localization.

Job Responsibility

  • Contribute to the development of Python and JavaScript libraries (such as moz-l10n) and tools that support Mozilla’s localization infrastructure
  • Improve localization and internationalization within the Firefox codebase to make features more adaptable and accessible across languages and regions
  • Collaborate with engineers and program managers to design and implement new Pontoon features
  • 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 libraries and tools using Python and JavaScript
  • Solid understanding of web technologies, APIs, and modern development workflows
  • Experience with open source development practices and community collaboration
  • 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
  • Professional fluency in English (written and verbal)
  • Commitment to our values: Welcoming differences
  • Being relationship-minded
  • Practicing responsible participation
  • Having grit

Nice to have

  • Experience with internationalization (i18n) and localization (l10n) concepts, tools, or workflows
  • Programming experience in Rust and C++
  • Fluency in another language and understanding of linguistic diversity (e.g., grammar, plurals, text direction, and cultural conventions)

What we offer

  • Generous performance-based bonus plans
  • Rich medical, dental, and vision coverage
  • Generous retirement contributions with 100% immediate vesting
  • Quarterly all-company wellness days
  • 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)
  • Flexible work environment
  • 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
Mozilla - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Senior Software Engineer (Localization)

8 matching positions

Senior Software Engineer (Localization)

The Localization Team manages the infrastructure that powers localization across...
Location
Location
Salary
Salary:
Not provided
mozilla.org Logo
Mozilla
Expiration Date
Until further notice
Flip Icon
Requirements
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
Job Responsibility
Job Responsibility
  • 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
What we offer
What we offer
  • Generous performance-based bonus plans
  • Rich medical, dental, and vision coverage
  • Generous retirement contributions with 100% immediate vesting
  • Quarterly all-company wellness days
  • 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
  • Fulltime
Read More
Arrow Right

Senior Software Engineer (Localization)

The Localization Team manages the infrastructure that powers localization across...
Location
Location
Salary
Salary:
Not provided
mozilla.org Logo
Mozilla
Expiration Date
Until further notice
Flip Icon
Requirements
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
Job Responsibility
Job Responsibility
  • 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
What we offer
What we offer
  • Generous performance-based bonus plans to all eligible employees
  • Rich medical, dental, and vision coverage
  • Generous retirement contributions with 100% immediate vesting
  • Quarterly all-company wellness days
  • 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
  • Fulltime
Read More
Arrow Right

Senior Software Engineer - Maps & Localization - AV Labs

Uber is launching AV Labs to accelerate the autonomous technology ecosystem. We’...
Location
Location
United States , Sunnyvale
Salary
Salary:
202000.00 - 224000.00 USD / Year
uber.com Logo
Uber
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 3 years of total experience in the self driving industry
  • Bachelor degree in computer science, computer engineering or related fields
  • Proficient in core algorithms for HD mapping and localization
  • Proficient in batch data processing
Job Responsibility
Job Responsibility
  • Design and deliver software for HD Maps and localization
  • Design and implement the batch pipeline for HD Maps generation
  • Design the data format and storage format for HD Maps
  • Implement core algorithms for HD mapping and localization
  • Design and implement the onboard localization module
What we offer
What we offer
  • bonus program
  • equity award
  • other types of comp
  • 401(k) plan
  • various benefits
  • Fulltime
Read More
Arrow Right

Senior Software Engineer - Maps & Localization - AV Labs

Uber is launching AV Labs to accelerate the autonomous technology ecosystem. We’...
Location
Location
United States , Sunnyvale
Salary
Salary:
202000.00 - 224000.00 USD / Year
uber.com Logo
Uber
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 3 years of total experience in the self-driving industry
  • Bachelor degree in computer science, computer engineering or related fields
  • Proficient in core algorithms for HD mapping and localization
  • Proficient in batch data processing
Job Responsibility
Job Responsibility
  • Design and deliver software for HD Maps and localization
  • Design and implement the batch pipeline for HD Maps generation
  • Design the data format and storage format for HD Maps
  • Implement core algorithms for HD mapping and localization
What we offer
What we offer
  • Eligible to participate in Uber's bonus program
  • May be offered an equity award & other types of comp
  • All full-time employees are eligible to participate in a 401(k) plan
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

We are the global test and automation specialists, powering next-generation tech...
Location
Location
United States , North Reading
Salary
Salary:
161700.00 - 258800.00 USD / Year
teradyne.com Logo
Teradyne
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 10 years of software development experience programming in C# .NET on Windows using Visual Studio
  • Solid experience developing distributed and multi-threaded applications
  • Solid understanding of object-oriented design
  • Background in semiconductors and/or test equipment industry is a plus
  • Experience in any of the following is a plus: Machine vision, WPF, capital equipment, factory integration, TCP/IP, database programming
  • Ability to work effectively on multiple tasks with multiple deadlines
  • Ability to solve problems through creative and analytical thinking
  • Ability to work with the local team and a design team overseas
  • Ability to grasp new technologies and react to changes in a fast-paced environment
Job Responsibility
Job Responsibility
  • Design and extend software for a large test system that incorporates many levels of software
  • Design operating software for capital equipment, factory information systems and application software
  • Collaborate with engineers from other disciplines in diagnosing and solving complex system problems
  • Collaborate with a larger design team around the world
  • This position is based in North Reading, MA and candidate will need to mostly work on-site
  • Moderate travel is required, both within the US and to southeast Asia
What we offer
What we offer
  • medical
  • dental
  • vision
  • Flexible Spending Accounts
  • retirement savings plans
  • life and disability insurance
  • paid vacation & holidays
  • tuition assistance programs
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

We are the global test and automation specialists, powering next-generation tech...
Location
Location
United States , North Reading
Salary
Salary:
161700.00 - 258800.00 USD / Year
teradyne.com Logo
Teradyne
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 10 years of software development experience programming in C# .NET on Windows using Visual Studio
  • Solid experience developing distributed and multi-threaded applications
  • Solid understanding of object-oriented design
  • Experience in Machine vision is a must, including: General knowledge of geometrical optics
  • Experience of lenses and lens selection
  • Knowledge of computer vision and image processing
  • Experience of commercial vision software products is a strong plus
  • Knowledge of linear algebra is a strong plus
  • Background in semiconductors and/or test equipment industry is a plus
  • Experience in any of the following is a plus: WPF, capital equipment, factory integration, TCP/IP, database programming
Job Responsibility
Job Responsibility
  • Design and extend software for a large test system that incorporates many levels of software
  • Design operating software for capital equipment, factory information systems and application software
  • Collaborate with engineers from other disciplines in diagnosing and solving complex system problems
  • Collaborate with a larger design team around the world
  • Moderate travel is required, both within the US and to southeast Asia
What we offer
What we offer
  • medical
  • dental
  • vision
  • Flexible Spending Accounts
  • retirement savings plans
  • life and disability insurance
  • paid vacation & holidays
  • tuition assistance programs
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

We are the global test and automation specialists, powering next-generation tech...
Location
Location
United States , North Reading
Salary
Salary:
161700.00 - 258800.00 USD / Year
teradyne.com Logo
Teradyne
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 10 years of software development experience programming in C# .NET on Windows using Visual Studio
  • Solid experience developing distributed and multi-threaded applications
  • Solid understanding of object-oriented design
  • Background in semiconductors and/or test equipment industry is a plus
  • Experience in any of the following is a plus: Machine vision, WPF, capital equipment, factory integration, TCP/IP, database programming
  • Ability to work effectively on multiple tasks with multiple deadlines
  • Ability to solve problems through creative and analytical thinking
  • Ability to work with the local team and a design team overseas
  • Ability to grasp new technologies and react to changes in a fast-paced environment
Job Responsibility
Job Responsibility
  • Design and extend software for a large test system that incorporates many levels of software
  • Design operating software for capital equipment, factory information systems and application software
  • Collaborate with engineers from other disciplines in diagnosing and solving complex system problems
  • Collaborate with a larger design team around the world
  • Moderate travel is required, both within the US and to southeast Asia
What we offer
What we offer
  • Medical
  • Dental
  • Vision
  • Flexible Spending Accounts
  • Retirement savings plans
  • Life and disability insurance
  • Paid vacation & holidays
  • Tuition assistance programs
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

As a Senior Software Engineer, you will be part of a cross-functional, service-o...
Location
Location
Romania , Iași
Salary
Salary:
Not provided
awin.com Logo
Awin Global
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 6+ years of professional software engineering experience
  • Strong foundation in OOP and comfort working with multiple programming languages, ideally incl. Java/Spring
  • Passion for clean, maintainable code with a strong understanding of SOLID principles
  • Hands-on experience designing AWS-based systems, microservices with REST APIs, and event-driven architectures
  • Focus on engineering quality through code reviews, testing, and test strategy improvement
  • Responsibility for maintaining CI/CD pipelines for reliable, automated software delivery
  • Confident use of Git or similar version control systems in a collaborative environment
  • Solid understanding of relational databases, data modelling, and SQL
  • Familiarity with non-relational databases like DynamoDB, MongoDB
  • Basic knowledge of web technologies and modern frontend frameworks, ideally Angular
Job Responsibility
Job Responsibility
  • Work within a small, collaborative team using agile methodologies and practices
  • Take ownership of applications across the full lifecycle, from design and implementation to operation
  • Proactively identify improvement opportunities and technical risks, helping shape technical direction
  • Solve real business problems by translating requirements into scalable technical solutions
  • Support an effective agile way of working by helping facilitate team ceremonies and workshops
  • Mentor engineers through code reviews, knowledge sharing, and day-to-day collaboration
  • Troubleshoot and resolve production issues, ensuring service reliability and operational stability
  • Communicate effectively in writing and verbally with local and remote colleagues and stakeholders
What we offer
What we offer
  • Flexi-Week and Work-Life Balance
  • Remote Working Allowance
  • Flexi-Office
  • Meal Vouchers
  • Health & Wellbeing insurance
  • Remote Working Furniture Package
  • Appreciation program with peer-to-peer vouchers
  • Fulltime
Read More
Arrow Right