Specialty
Nice to have
The role
Mozilla is hiring a contract Staff Software Engineer to burn down Firefox's WebCompat bug backlog. The person diagnoses site-breakage bugs and writes interventions and simple fixes, often with AI assistance. Remote, open to candidates in Germany.
What you will do
- Finish or verify diagnosis of long-tail WebCompat bugs
- Write WebCompat interventions
- Write and land simple fixes
- Reproduce and triage incoming breakage reports
What they ask for
- Solid web development: HTML, CSS and JavaScript
- Comfortable debugging real-world site breakage
- Fluent with browser devtools and cross-browser diagnosis
- Comfortable using AI tooling to speed up fixes
What they offer
- Contract engagement
This is our own short reading of the posting. The full description, and anything that has changed since, is on Mozilla's careers page behind the apply button.


