Senior Full Stack Engineer, React
Floy
CloudDockerKubernetesNoSQLReactReact NativeSQLTypeScript
Senior Frontend Software Engineer
Mozilla
full-time
Posted on:
Location Type: Remote
Location: Remote • 🇩🇪 Germany
Visit company websiteJob Level
Senior
Tech Stack
JavaScriptJestReactReduxTypeScript
About the role
- Design and develop modern, interactive UI components for the Firefox Profiler using TypeScript, React, Redux, and related web technologies.
- Build high-performance, scalable, accessible, and maintainable user interfaces that visualize complex performance data.
- Engage with other Firefox engineers to help them learn how to use our tools efficiently, and develop projects to serve them better.
- Engage with the performance team efforts such as bug triage and strategy.
- Promote and encourage the use of our performance tools within and beyond Mozilla by writing and talking about them.
- Engage with our community and mentor volunteers contributing to the codebase.
Requirements
- 5+ years of experience in JavaScript/TypeScript, React, Redux, and browser-based UI development
- A strong background in building complex, interactive UIs that manage large data sets efficiently
- Knowledge of profiling, performance tooling, and testing
- Knowledge of frontend testing frameworks (e.g., Jest, React Testing Library) and best practices in maintainable UI codebases
- Strong and respectful communication skills and ability to collaborate across engineering teams
- Experience working with performance visualization is a plus
- Familiarity with the Firefox Profiler or Chrome DevTools is a plus
- Commitment to our values:
- Welcoming differences
- Being relationship-minded
- Practicing responsible participation
- Having grit
Benefits
- 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)
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard skills
TypeScriptReactReduxJavaScriptUI developmentperformance toolingfrontend testing frameworksJestReact Testing Libraryperformance visualization
Soft skills
communication skillscollaborationmentoringengagementstrategybug triagecommunity involvementrespectful interactionrelationship-mindedgrit
