Senior Software Engineer – Engineering Workflow, CI

Mozilla

Senior Software Engineer enhancing development workflows to improve Firefox performance at Mozilla. Collaborating with a distributed team and mentoring peers in an open-source environment.

Posted 4/22/2026full-timeRemote • 🇸🇪 SwedenSenior💰 SEK 512,925 - SEK 683,900 per yearWebsite

Tech Stack

Tools & technologies

AndroidAWSCloudDjangoFlaskGoogle Cloud PlatformJavaScriptLinuxPythonSQL

About the role

Key responsibilities & impact

Improve Firefox development workflows to reduce time spent testing and debugging test failures as well as more integration/automation of workflows
Work with a geographically-distributed development team
Mentor other team members and be mentored by more senior team members
Collaborate with other teams by providing code review and technical direction
Look at data, make dashboards, identify trends in Firefox development workflow

Requirements

What you’ll need

Proven Python skills, including building services
Front-end development experience, including JavaScript proficiency
Experience with Python frameworks (e.g., FastAPI, Flask, Django), Cloud Services (e.g., GCP, AWS) and REST
Solid understanding of databases and SQL
Experience with CI/CD systems (e.g., GitHub Actions, CircleCI) and test harnesses
Comfortable working cross-platform, familiar with at least 2 of: Windows, Linux, Mac, Android
A passion for enhancing developer productivity
Commitment to our values:
Welcoming differences
Being relationship-minded
Practicing responsible participation
Having grit

Benefits

Comp & perks

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)

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Hard Skills & Tools

PythonJavaScriptFastAPIFlaskDjangoGCPAWSRESTSQLCI/CD

Soft Skills

mentoringcollaborationcode reviewtechnical directiondata analysistrend identificationdeveloper productivityrelationship-mindedresponsible participationgrit