Contract Staff Software Engineer-FireFox Layout

💼 Contract💰 $131,400–$131,400🗓 2026-09-22 → 2026-09-26

Core

Maintain and optimize Firefox's Layout engine (CSS, page layout, APZ, text, images) to ensure code health and stability.

Role type

Senior IC software engineer (browser layout)

Builds

Firefox browser layout components

Domain

Web browser development / C++ systems programming

Deliverable

production ML models | product features

Required skills

C++, CSS, page layout, multithreaded debugging, code review, independent technical leadership

Preferred skills

Rust, JavaScript, web browser architecture, web standards, mobile web profiling, AI tool utilization

Technologies

C++, JavaScript, Rust, CSS, APZ

Responsibilities

Fix bugs and regressions in the Layout area, keep tests green, diagnose cross-platform layout issues, conduct code reviews, participate in web-compat meetings

Seniority

Senior, hands-on IC

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About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.