ApplySarthiContract Staff Software Engineer – WebCompat & Bug Triage
Mozilla
Tailor my CV for this job, freeView job and applyYour CV rewritten for this role, from your real experience. Sign in with Google, nothing to install.
Got this interview? Our apps help you get the job.
Skills named in this job
Read from the description itself, not inferred.
This role on the market
Software Engineer jobs in Canada · Remote Software Engineer jobs · CSS jobs · HTML jobs · JavaScript jobs
Mozilla has 114 open roles listed here.
- Field Marketing Manager, Firefox Enterprise
- Field Marketing Manager, Firefox Enterprise
- Senior Software Engineer, OS Integration
- Senior Software Engineer, OS Integration
- Senior Software Engineer, OS Integration
Counted across 14 company job boards, updated as roles open and close.
Preparing for this interview
Interviews for webcompat roles keep coming back to CSS, HTML, JavaScript. Practise those questions before you sit with Mozilla.
Questions you are likely to be asked
- Why do you want to join Mozilla?
- What is your experience with CSS? Tell me one thing you learned the hard way.
- What do you do when a production issue happens on your code?
- Walk me through a system you built. How was it designed, and what would you change now?
- Tell me about a hard bug you tracked down. How did you find the cause?
Prep Sarthi gives you a free mock interview: an AI interviewer asks you questions like these out loud, from your own CV and this job, and shows your score and your weakest answer.
Practise the Contract Staff Software Engineer – WebCompat & Bug Triage at Mozilla interview free →You will help reduce Firefox’s WebCompat bug backlog by finishing or verifying the diagnosis of the long tail of site-breakage bugs, and by writing interventions or simple fixes (often with AI assistance). You turn a large queue of reported breakages into diagnosed, actionable, or fixed bugs.
Responsibilities
- Finish diagnosing, or verify the diagnosis of, long-tail WebCompat bugs.
- Write WebCompat interventions where appropriate.
- Write simple fixes (AI-assisted) and land them.
- Reproduce and triage incoming site-breakage reports.
Required qualifications
- Solid web development (HTML, CSS, JavaScript) and comfort debugging real-world site breakage.
- Fluent with browser devtools and cross-browser diagnosis.
- Comfortable using AI tooling to speed up diagnosis and fixes.
Preferred
- Gecko knowledge is a strong plus (but can be taught).
- Prior WebCompat or web-standards experience.
Match this job to your CV
ApplySarthi scores your CV against this role, shows the skills you are missing, and writes a tailored version for the application.
Check my match →Similar open roles
Need answers during your interview? Try Live Sarthi.
Live Sarthi, an Interview Sarthi app, shows answer suggestions during the call.
- Hidden from supported screen sharingThe overlay stays out of supported Windows screen captures.
- Answers start in about 1.5 secondsResponse time varies with your connection and model.
- From your own CVYour projects and your experience, not a generic script.
- 30 minutes freeThen ₹149 for a 2-day pass with unlimited calls — you pay for the days you are interviewing, not a subscription.
A Windows app, from the same team as ApplySarthi.
Listed on greenhouse · posted 2026-10-06. ApplySarthi collects openings and links to application pages; the role is advertised by Mozilla, not by us.