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Mozilla, headquartered in Rincon Hill, San Francisco, CA, is a prominent player in the internet software industry, best known for its flagship product, Firefox. With over 1,000 employees, Mozilla focuses on open-source software and privacy-forward solutions, including Mozilla VPN. The company has ra...
Mozilla offers 26 weeks of paid parental leave for childbearing parents and 12 weeks for non-childbearing parents. Employees receive 100% coverage for...
Mozilla champions an open-source culture, prioritizing user privacy and choice. The company fosters a mission-driven environment, focusing on impactfu...

Mozilla • Remote Spain
Mozilla is hiring a Senior Software Engineer to enhance Firefox development workflows and improve integration and automation. You'll work with technologies like JavaScript and Python in a remote setting based in Spain. Salary range: €57,000—€83,000 EUR.
You have 5+ years of experience in software engineering, particularly in enhancing development workflows and CI processes. Your expertise includes working with JavaScript and Python, and you are comfortable with Docker and Git for version control. You thrive in a collaborative environment and enjoy mentoring junior team members while also being open to learning from more experienced colleagues. You understand the importance of automation in software development and have a track record of implementing CI/CD pipelines to streamline processes. You are passionate about open-source software and are excited about contributing to projects that have a meaningful impact on users worldwide.
In this role, you will focus on improving Firefox development workflows to minimize time spent on testing and debugging. You will collaborate with a geographically-distributed team, ensuring that developers can efficiently build, test, and deliver Mozilla’s core products. Your responsibilities will include identifying bottlenecks in the current workflows and proposing solutions that enhance productivity. You will also mentor other team members, sharing your knowledge and experience to help them grow in their roles. As part of your daily tasks, you will engage in code reviews, contribute to architectural discussions, and help maintain high standards of code quality across the team. You will be instrumental in driving the adoption of best practices in CI/CD, ensuring that the team can deliver features rapidly and reliably.
Mozilla offers a competitive salary range of €57,000—€83,000 EUR, along with a flexible remote work environment. You will be part of a mission-driven organization that values diversity and inclusion, and you will have the opportunity to work on projects that shape the future of the internet. We encourage you to apply even if your experience doesn't match every requirement, as we believe in fostering a culture of learning and growth. Join us in making the internet a better place for everyone.
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