About the role

Release engineer optimizing build and deployment pipelines for Mozilla’s open-source Firefox browser. Scaling software delivery, improving developer experience, and supporting reliable releases across platforms.

Responsibilities

Write software that scales for tens of thousands of tasks used to build, test, and release Firefox every day
Collaborate with senior+ engineers to improve the developer experience and implement improvements
Work with a geographically distributed development team between North America and Europe
Request and provide code reviews
Respond to critical service outages during normal working hours, with no on-call rotation required
Help optimize and maintain Mozilla’s build and deployment pipeline

Bachelor's degree in computer science (or related programs) or equivalent work experience
Minimum of 2 years of experience working in an object-oriented programming language, preferably Python
Passion for CI/CD pipelines
Previous experience using cloud resources such as AWS, GCP, or Azure
Comfortable developing in Windows, macOS, and Linux environments
Experience with shell scripting
Experience working on a team distributed across time zones
Experience improving existing code bases and tools
Commitment to Mozilla’s values: welcoming differences, being relationship-minded, practicing responsible participation, and having grit

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)