• 5+ years of experience in a software automation engineering role (SDET, test engineer, etc)
• 3+ years experience in building and testing scalable services (Services & API testing, load testing, etc)
• Proficiency in Python, Javascript, and industry standard automation tools, including pytest and junit
• Knowledge and ability to set up testing infrastructure (CircleCI, K6, Docker, Lighthouse, Playwright, Locust, GCP, etc.)
• Ability to quickly learn and implement unfamiliar technologies
• Detail oriented within a fast-paced work environment
• Excellent written and verbal communication skills
• Analyze and tackle sophisticated software development problems spanning multiple components, sometimes outside area of expertise
• Ability to navigate large and complex codebases as well as managing Git repositories
• Excellent problem-solving skills with an emphasis on data-informed decision-making
• Ability to break down complex problems into actionable tasks and delegate and guide other engineers to execute on a plan

Desirable

• The Ecosystem Test Engineering team is passionate about helping Mozilla ship well-tested, high quality products
• We are looking for a Staff Test Engineer to work alongside product, engineering, and SRE teams to advance automated testing efforts that are key to building engaging and inclusive products
• We’re a part of the Mozilla PXI (Protection, Experimentation, Identity) Engineering team; our community of engineers is geographically-distributed, and working in the open is the norm
• We contribute to the code driving many Firefox browser services and various Mozilla products in a number of languages, including Python, JavaScript, and Rust
• Design, develop, and maintain test strategies (both functional and load) for large scale services and Mozilla products
• Build tools, processes, and systems that allow teams to have a robust feedback loop around quality
• Help teams build measurable understanding of code quality and product risk
• Write, run, and maintain automated tests and identify gaps in test coverage
• Guide the work of other test engineers and help teams write and maintain their tests and test setup
• Work collaboratively with many teams including product, design, UX, developers, operations, and data engineers
• Ensure our ship process is fast, repeatable, and dependable by managing the logistics of shipping software including building and maintaining our CI pipeline
• Contribute towards building a healthy team culture, nurture and mentor junior engineers, be invested in your growth as well as your peers
• Be an opinionated advocate for Testing and Quality