Mozilla is hiring a
Senior Staff Software Engineer
About Mozilla
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser, and Pocket, a service for keeping up with the best content online. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more.
Job Description
Mozilla's New Products group is hiring a hands-on, senior individual contributor to run experiments inside browser engine internals and evaluate ideas. You will design and build experiments in engine subsystems (DOM, layout, accessibility, JS runtime, networking), prototype features that let programs interact with web pages reliably, and measure everything. You will use AI tools heavily, but you will verify what they produce by testing and measuring. You likely have deep experience in at least one browser subsystem, strong C++ or Rust, comfort in a very large codebase, a solid grasp of how the web platform behaves, and a real interest in AI agents and their tooling. Contributions to Gecko, Servo, Blink or WebKit are a big plus.Remote
Remote Conditions
US or Canada
Salary
Not Specified
Benefits
Not Specified
Tech Tags
Senior Role
Date Listed
02 November, 2026 (about 11 hours ago)
