Remote Senior Security Engineer, Open-Source Browser
Role Description & Technical Scope
Mozilla Corporation is seeking a Senior Software Engineer to advance Firefox security. You will design, implement, and ship security features for enterprise users, contribute to Firefox security architecture across multiple OS, and collaborate with cross-functional teams. You’ll bring 3+ years in low-level software, strong C/C++, knowledge of security fundamentals, debugging multithreaded apps, and familiarity with web tech and Rust. Remote in Spain with a range of benefits. #J-18808-Ljbffr
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Key Details
- Date Posted: 23 Oct 2026
- Location: Remote
- Employment: Permanent
- Workplace: Remote
- Domain: IT
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Mozilla
Verified Tech EmployerEnterprise technology firm or security consultancy operating across the UK digital defense ecosystem.
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