Senior Software Engineer, Firefox Security
Mozilla is hiring a Senior Software Engineer to advance Firefox's security architecture and cryptography stack, focusing on cryptographic protocols, WebPKI and security-sensitive web APIs. The role involves designing and shipping web platform security features, improving browser reliability and memory efficiency, and collaborating across teams on security initiatives. The position is remote in the Netherlands with a hiring range of EUR 66,000 to 88,000.
Responsibilities
- ▹Advance Firefox's security architecture and cryptography stack, including cryptographic protocols, WebPKI and security-sensitive web APIs
- ▹Design, implement and ship web platform security features in collaboration with teammates and the broader web community
- ▹Investigate and resolve issues impacting stability, correctness and performance, including memory usage in a multi-threaded browser environment
- ▹Partner with engineers across teams to identify, prioritize and address security issues
- ▹Participate in debugging, root cause analysis and implementation of long-term solutions
- ▹Contribute to technical discussions, design reviews and project planning for security-related initiatives
Requirements
- ▹Experience in software engineering with proficiency in C/C++
- ▹Solid understanding of security principles, including cryptographic protocols and implementations
- ▹Experience building and maintaining complex software systems in large-scale or security-sensitive environments
- ▹Expertise in diagnosing and resolving issues in multi-threaded, cross-platform native applications, including performance and memory challenges
- ▹Familiarity with web technologies and comfort working within large, complex, multi-language codebases
Nice to have
- ▹Interest or experience in Rust
Soft skills
What we offer
- ▹Generous performance-based bonus plans
- ▹Rich medical, dental and vision coverage
- ▹Generous retirement contributions with 100% immediate vesting
- ▹Quarterly all-company wellness days
- ▹Country-specific holidays plus a day off for your birthday
- ▹One-time home office stipend and annual professional development budget
- ▹Quarterly well-being stipend and considerable paid parental leave
- ▹Employee referral bonus program
- ▹Salary range: EUR 66,000 - 88,000 (remote, Netherlands)
About the company
Mozilla Corporation is a non-profit-backed technology company that has shaped the internet for over 25 years, maker of the privacy-minded Firefox browser used by more than 225 million people monthly. Wholly owned by the non-profit Mozilla Foundation, it is accountable only to its mission and builds open-source software with thousands of volunteer contributors worldwide.