ApplySarthiContract Staff Software Engineer - Performance Graphics (C++,Rust, WebGL)
Mozilla
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This role on the market
1,065 open performance roles across 314 companies are on ApplySarthi right now, most of them in Bengaluru (50), Hyderabad (26), Pune (10).
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What performance roles keep asking for: Python (24%), C++ (18%), Paid media (15%) — counted across their open postings here.
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Mozilla has 114 open roles listed here.
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Counted across 14 company job boards, updated as roles open and close.
Preparing for this interview
Interviews for performance roles keep coming back to Python, C++, Paid media. 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 Android? 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?
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Practise the Contract Staff Software Engineer - Performance Graphics (C++,Rust, WebGL) at Mozilla interview free →The role
You will take on the ongoing maintenance and engineering work in Firefox’s Graphics area (rendering, compositing, images, canvas, WebGL). You help keep the graphics code healthy.
Responsibilities
- Own day-to-day Graphics maintenance: bug fixes, regressions, test upkeep, incoming issues.
- Diagnose and fix graphics problems across platforms (Windows, macOS, Linux, Android).
- Carry code review and routine upkeep so the FTE engineers can focus on performance.
Definition of done
A healthy Graphics area, backlog and regressions kept down, with the team’s senior engineers freed to focus on performance.
Required qualifications
- Strong C++ and/or Rust.
- Knowledge of graphics frameworks and GPU architecture.
- Strong debugging and optimization in a multithreaded codebase.
- Able to work independently and lead technically in a large, mature codebase.
Preferred
- Shader languages; mobile/Android; open-source collaboration.
Hiring Ranges:
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Listed on greenhouse · posted 2026-09-22. ApplySarthi collects openings and links to application pages; the role is advertised by Mozilla, not by us.