Overview

Mozilla isn't just a company; it is a movement. For over 25 years, we have been at the forefront of shaping an internet that prioritizes people, not profits. Our work, including pioneering brands like the Firefox web browser, reaches over 225 million users globally each month. As a wholly owned subsidiary of the non-profit Mozilla Foundation, our mission drives every decision. We are free from shareholder demands, focused entirely on building open source technology that puts user control and privacy first. This particular role is a fully remote, worldwide opportunity, inviting talented engineers from across the globe to contribute.

We are expanding our dedicated team focused on Firefox Security, a critical area given the constant evolution of online threats. Join us in our ongoing commitment to a more secure, accessible, and user-friendly internet for all.

Key Responsibilities

Architect, design, and implement advanced security and hardening features specifically for Firefox, focusing on both individual and enterprise users.
Collaborate closely with product managers, security researchers, and other engineering teams to integrate security features seamlessly into the browser's core.
Drive the entire software development lifecycle for security features, from initial concept and design through robust testing, deployment, and ongoing maintenance.
Provide technical leadership and mentorship to other engineers, fostering a culture of security best practices within the team.
Research emerging security threats and vulnerabilities, translating insights into proactive defenses for Firefox users.
Contribute to the open source community by participating in code reviews, documentation, and sharing knowledge.
Ensure the stability, performance, and maintainability of all developed security components.

Requirements

Significant professional experience as a software engineer, with a strong focus on security engineering.
Proficiency in programming languages commonly used for browser development, such as C++ or Rust.
Deep understanding of web security fundamentals, common attack vectors, and defensive strategies.
Familiarity with browser architecture, operating system security mechanisms, and network protocols.
Proven track record of designing, implementing, and shipping complex security features in a production environment.
Experience with enterprise security requirements and deployment considerations is a definite advantage.
Excellent problem-solving skills and the ability to debug intricate issues across various software layers.
Strong communication and collaboration skills, essential for working effectively in a global, remote team.
A passion for Mozilla's mission to keep the internet open, accessible, and user-centric.

What You'll Gain

Joining Mozilla means more than just a job; it is an opportunity to make a tangible difference on a global scale. Here is what you can expect:

The chance to work on challenging, impactful security problems that affect millions of users daily.
A truly collaborative and inclusive remote work environment, connecting you with talented individuals worldwide.
Opportunities for significant professional growth, learning from industry experts, and shaping the future of web security.
Direct contribution to open source projects that uphold principles of privacy, transparency, and user empowerment.
A role where your work aligns with a powerful mission: reclaiming the internet for people.
Competitive compensation and benefits, recognizing your valuable contributions.