Senior Software Engineer (Contract)

Team:Firefox Locations:Remote Germany

Are you passionate about Privacy Protections and the Open Web? Do you want to ship software to a large user base? Do you want your contributions to have a positive impact on the world? Do you want to advance current browser architecture to make the web a safer place for users?

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and restricted. We are looking for a Senior Software Engineer to support the Privacy Team to advance the Firefox Web Platform.

As a Senior Software Engineer in the Privacy Team at Mozilla, you will…

Implement Privacy-improving, anti-tracking features and data sanitization into the Firefox web browser to prevent all forms of unhealthy user tracking.
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).

Your Professional Profile:

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. You can validate your progress and decisions and communicate them clearly.

Bonus Points:

You have already contributed to the Mozilla mission and the 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.

About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

Commitment to diversity, equity, inclusion, and belonging

Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities and expressions.

We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodation@mozilla.com to request accommodation.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

Why Mozilla?

At Mozilla, we’re serving humanity—by maintaining a safe, open internet—while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.

Our values drive our actions

Purpose is built into our work, with our mission driving every decision
We challenge assumptions, the status quo, ourselves, and each other
We are transparent: in our code, our business partnerships, and our everyday interactions
We seek out people from diverse backgrounds and with perspectives different from our own
We pair purpose with performance and put people ahead of profit

Our impact is global

1000+ paid staff from over 30 countries
Thousands of volunteer contributors across six continents
2 global offices: Berlin and Toronto
9 coworking space locations: San Francisco, San Mateo, London, Paris, Portland, Tulsa, Vancouver, Chicago, and Bellevue
Hundreds of home offices globally

Our benefits are world-class

Flexible work environment (majority of Mozillians work remotely)
Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents)
Reimbursement for professional development (up to $3,000/year)
A work setup including the latest hardware and software of your choice

Senior Software Engineer (Contract)