Senior Software Engineer - Engineering Workflow and CI

🇪🇸 Remote Spain, Spain
Posted 3 weeks ago
Expires June 21, 2026
Full TimeRemoteEngineering

Mozilla is seeking a Senior Software Engineer to join the Engineering Workflow and Continuous Integration (CI) team. This team plays a pivotal role in enhancing the development workflows for Firefox, ensuring that developers can efficiently build, test, and deliver Mozilla's core products. As part of this team, you will contribute to streamlining processes that impact millions of users worldwide.

In this role, you will focus on improving Firefox development workflows by reducing time spent on testing and debugging test failures. You will work on integrating and automating various workflows to enhance developer productivity. Collaboration with a geographically distributed development team is essential, as is mentoring team members and providing technical direction through code reviews. Additionally, you will analyze data, create dashboards, and identify trends to further optimize development processes.

The ideal candidate will have proven Python skills, including experience in building services, and proficiency in front-end development with JavaScript. Familiarity with Python frameworks such as FastAPI, Flask, or Django, as well as experience with cloud services like GCP or AWS, is required. A solid understanding of databases and SQL, along with experience in CI/CD systems and test harnesses, is essential. Comfort working across multiple platforms, including Windows, Linux, Mac, and Android, is also important. A passion for enhancing developer productivity and a commitment to Mozilla's values are key attributes for success in this role.

Mozilla offers a comprehensive compensation package, including performance-based bonus plans, rich medical, dental, and vision coverage, and generous retirement contributions with immediate vesting. Employees enjoy quarterly wellness days, country-specific holidays plus a day off for their birthday, and various stipends for home office setup, professional development, and well-being. Considerable paid parental leave and an employee referral bonus program are also part of the benefits.

Joining Mozilla means becoming part of a mission-driven organization dedicated to building the internet as a public resource accessible to all. The company values diversity, equity, inclusion, and belonging, encouraging applications from all equity-seeking communities. Mozilla provides opportunities for growth and development, allowing employees to make a meaningful impact on the web and its users.

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