Posted about 5 years ago

Firefox developers land code every day to delight users with new features and improve product performance and security. The engineering workflow team is responsible for the build system code that transforms this raw code into a binary that can be packaged, signed, tested and released to the worldwide community that explores the web with Firefox. Hundreds of Firefox developers run local builds every day. Our continuous integration farm runs over 12,000 build jobs a day. We are force-multipliers to enable Firefox developers to do their best work.

As a Senior Software Engineer in Build Systems you will

• Work with a geographically-distributed development team
• Implement build system improvements to support new and existing Firefox platforms
• Mentor other team members and be mentored by more senior team members
• Collaborate with other teams by providing code review and technical direction
• Modernize tooling for faster build times to accelerate developer productivity

You should possess the following skills:

• You have experience with compiled languages, executable formats, and related tools
• You possess working knowledge of C/C++
• You are proficient in a scripting language such as Python
• You are an excellent communicator and have participated effectively on a distributed team
• You have a proven track record of finishing projects where the work spans several months
• You’re pragmatic about how to move things forward in specific timeframes including trade-offs and safeguards when implementing new functionality

Nice to have:

• Low level system experience on Linux. Similar experience on Windows and Mac would be a bonus
• Experience debugging and modifying an existing complex, multi-language code base, and driving efficiencies for better build times at scale
• Experience working with modern build systems such as Bazel, Buck or Blaze
• Experience refactoring as an opportunity to enhance the stability of the code base and improve its maintainability
• Rust experience

Upcoming projects:

• Implement cross compiled Windows builds on Linux in our continuous integration farm
• Evaluate and implement modern build tooling to replace our existing make build backend
• Implement tools for more efficient distributed compilation and caching of build artifacts
• Implement telemetry and dashboards to measure the impact of build system improvements

About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

We are an equal opportunity employer and value diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Group: D

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