Senior Software Engineer, Firefox Security in Nederland

Responsibilities

• Design, implement, test, and ship security and hardening features for Firefox enterprise users.
• Advance Firefox security architecture through privilege isolation, trust-boundary changes, cryptographic protocols, WebPKI, and security-sensitive web APIs.
• Investigate security issues across teams, identify root causes, and deliver robust maintainable fixes.
• Diagnose and resolve stability, correctness, performance, and memory issues in a complex multithreaded environment.

Requirements

• At least 3 years of low-level software engineering experience.
• Strong proficiency in C and/or C++ and a solid understanding of security fundamentals.
• Experience debugging and resolving issues in multithreaded, cross-platform native applications, including memory and performance challenges.
• Familiarity with HTML, CSS, and JavaScript and interest or experience in Rust.
• Ability to work effectively in large, complex, multi-language codebases and collaborate with distributed teams.
• Clear written and verbal communication skills.

Benefits

• Performance-based bonus plans for eligible employees.
• Retirement contributions with immediate vesting.
• Quarterly company wellness days, country-specific holidays, and a birthday day off.
• One-time home office stipend, annual professional development budget, and quarterly well-being stipend.
• Paid parental leave, employee referral bonus program, and country-specific insurance and employee assistance benefits.
• Remote role based in the Netherlands.