ApplySarthiContract Staff Software Engineer-FireFox Layout
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
967 open contract roles across 234 companies are on ApplySarthi right now, most of them in Delhi NCR (14), Bengaluru (13), Hyderabad (9).
- AI Creator (Contract)Jobgether
- Business Analyst Apprentice - 42-month fixed term contractAmazon
- External Engagements Coordination Partner (Contract Management)Roche
- Analytical Method Validation Specialist (12-Month Contract)Abbott
- Electrical Contract Manufacturer Support EngineerNokia
What contract roles keep asking for: Stakeholder management (19%), Excel (17%), Supply chain (17%) — counted across their open postings here.
Android jobs · C++ jobs · CSS 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 contract roles keep coming back to Stakeholder management, Excel, Supply chain. 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.
- How would you design an API for a feature you have worked on?
- 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?
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-FireFox Layout at Mozilla interview free →You will take on the ongoing maintenance and routine engineering work in Firefox’s Layout area (CSS, page layout, APZ, text, images). Working independently at a tech-lead level, you keep the Layout code healthy.
Responsibilities
- Own day-to-day Layout maintenance: fix bugs and regressions, keep tests green, handle incoming issues.
- Diagnose and fix Layout problems across platforms (Windows, macOS, Linux, Android).
- Carry code review and routine upkeep so the FTE engineers can focus on other mission critical projects. .
- Join planning and standards / web-compat meetings as needed.
Definition of done
A healthy Layout area, backlog and regressions kept down, with the team’s senior engineers freed to focus on critical Performance and Security issues.
Required qualifications
- Strong C++ (JavaScript and/or Rust a plus).
- Solid CSS and page-layout knowledge.
- Strong debugging and optimization in a multithreaded codebase.
- Able to work independently and lead technically in a large, mature codebase.
Preferred
- Prior experience in web browser architecture and development.
- Prior Web standards experience.
- Mobile web development, profiling and debugging skills a plus.
- Proven experience in utilization of AI tools (Claude, ChatGPT, etc.) in the investigation, development, debugging, and/or testing of code is a plus.
Hiring Ranges:
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 2026-09-22. ApplySarthi collects openings and links to application pages; the role is advertised by Mozilla, not by us.