Advance Firefox’s security architecture and cryptography stack: Contribute to improvements in Firefox’s core security systems, with a focus on cryptographic protocols, WebPKI, and security‑sensitive web APIs. Help implement and maintain security features that support the evolution of public key infrastructure on the web

Design and implement web platform security features: Develop and ship web platform features in collaboration with teammates and the broader web community. Contribute to standards‑based, secure, and interoperable implementations across Firefox

Improve browser reliability, performance, and resource efficiency: Investigate and resolve issues impacting stability, correctness, and performance. Analyze and improve memory usage and efficiency within a complex, multi‑threaded browser environment

Collaborate on security initiatives: Partner with engineers across teams to identify, prioritize, and address security issues. Participate in debugging, root ...