What you'll be doing

Implement privacy-improving, anti-tracking, and threat intelligence protection into the Firefox web browser to mitigate user tracking and phishing.
Implement architectural improvements into Gecko, the browser engine underlying Firefox.
Build performant, low-latency, and maintainable C++, JavaScript, and Rust code.
Work as part of a geographically distributed team in an asynchronous manner (mostly Europe and US-East).

Requirements

Bachelor's degree in computer science, engineering, or a related program; or equivalent work experience.
At least 4 years of experience with programming in C++ and Rust, with a strong background in memory safety, multi-threaded system architecture, or raw data stream manipulation.
Proven ability to onboard quickly, deliver, and improve complex software projects.
Proven track record of independently scoping and landing complex features within tight release windows.
Excellent written and verbal communication skills to validate progress and communicate decisions clearly.

Previous contributions to the Mozilla mission and codebase.
Experience working within the browser space (Gecko, Chromium, WebKit) or web engine runtime abstractions.
Experience or high interest in designing or leveraging ML pipelines to automate internal developer workflows.
Deep understanding of web architecture, the privacy/security model of the web, and client-side data structures.
Knowledge of basic statistical modeling.
Proficiency with Python and SQL.

Generous performance-based bonus plans for all eligible employees.
Generous retirement contributions with 100% immediate vesting regardless of employee contribution.
Quarterly all-company wellness days where everyone pauses together.
Country specific holidays plus a day off for your birthday.
One-time home office stipend.
Annual professional development budget.
Quarterly well-being stipend.
Considerable paid parental leave.
Employee referral bonus program.
Other benefits such as life/AD&D, disability, EAP, varying by country.