Senior Security Engineer - Firefox (Remote UK)
Role Description & Technical Scope
Mozilla is seeking a Senior Software Engineer to design and implement enterprise security and hardening features for Firefox. You will advance security architecture across operating systems and work with distributed teams to deliver robust fixes.
You will diagnose issues affecting stability and performance in a complex, multi-threaded browser environment. The role emphasizes systems programming, strong C/C++, and familiarity with web technologies, with an openness to Rust.
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Key Details
- Date Posted: 16 Oct 2026
- Location: , , united kingdom
- Employment: Permanent
- Workplace: Hybrid
- Domain: IT & Technology
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Mozilla
Verified Tech EmployerEnterprise technology firm or security consultancy operating across the UK digital defense ecosystem.
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