Sr. Staff Software Engineer, Browser (New Products)

Description: Join Mozilla's team as a Sr. Staff Software Engineer focusing on browser technology and new product applications. Engage in deep systems engineering, rapid experimentation, and collaboration across technical disciplines. Requirements: Expertise in at least one browser engine subsystem (e.g., DOM, layout, JavaScript runtimes). Proficiency in C++ or Rust, with experience in large systems codebases and performance debugging. Ability to investigate unfamiliar code, form hypotheses, and construct prototypes. Strong understanding of web platform behavior and compatibility. Experience with profiling, tracing, and performance testing. Curiosity about AI agents and willingness to work with coding tools. Benefits: Performance-based bonus plans for eligible employees. Comprehensive medical, dental, and vision coverage. Generous retirement contributions with immediate vesting. Quarterly wellness days and country-specific holidays. One-time home office stipend and annual professional development budget. Considerable paid parental leave and employee referral bonus program.