Staff Software Engineer - Mobile Android

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Why Mozilla?
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.
The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.
About the role:
At Mozilla, we’re building the future of the web—one that’s fast, private, inclusive, and puts people first. As mobile becomes the primary way billions experience the internet, our mission to deliver a secure, transparent, and user-centric browser is more important than ever.
We’re looking for a Staff Android Engineer to help evolve Firefox for Android—an open-source browser with over 100 million downloads on the Google Play Store. In this role, you’ll shape architecture, mentor engineers, and drive technical direction while contributing to a product that reflects Mozilla’s values of openness, innovation, and privacy.
If you're passionate about building high-impact software and want to help create a healthier internet for everyone, we’d love to hear from you.
What you’ll do:

Design, debug, build, and ship medium to large-scale Android solutions that promote a healthy and inclusive internet
Drive engineering decisions and feature development with a clear focus on delivering user value.
Become a member of a hardworking, diverse, and geographically distributed team responsible for the Firefox mobile applications and our ecosystem of open-source Android components
Closely collaborate with partners to understand, define, clarify scope, solidify requirements, and drive initiatives
Effectively communicate the engineering development perspective and discuss sophisticated topics with technical and non-technical team members
Define and uphold standards for quality through constructive code reviews, bug fixing, testing, and coding practices
Work closely with specialist Gecko teams to bring browser functionality to Android
Address problems that span all levels from the Java API layer, to JavaScript and into the C++ browser engine
Provide solutions and feedback to Mozilla's lively and dynamic open-source community to improve our Android solutions and support Mozilla’s manifesto

What you bring:

Many years of experience building complex applications for a broad and diverse user base using Java, Kotlin, and/or C++
Experience resolving problems, signaling risk, fostering change, and facilitating collaborative decision-making
Passion for building excellent products, and a sense of ownership that spans from design to investigating and squashing bugs.
Modern programming practices (code review, unit testing, automation)
Rust programming experience and knowledge is a plus
Ability to lead other developers and work as part of a team in a fast-paced environment to deliver well-designed, reusable, and high-quality code on time
Unafraid of asking questions, and proposing new insights if you think they will make a positive impact.
Desire to work with, learn, and grow with an outstanding group of people
Commitment to our values:

Welcoming differences
Being relationship-minded
Practicing responsible participation
Having grit


What you’ll get:

Generous performance-based bonus plans to all eligible employees - we share in our success as one team
Rich medical, dental, and vision coverage
Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
Quarterly all-company wellness days where everyone takes a pause 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 (life/AD&D, disability, EAP, etc.varies by country)

About Mozilla
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. We’re not a normal tech company. The things we create prioritize people and their privacy over profits. We exist to make the internet a healthier, happier place for everyone
Commitment to diversity, equity and inclusion
Mozilla believes in the value of diverse creative practices and forms of knowledge, and knows diversity, equity and inclusion 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 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 [email protected] 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.
Group: C
#LI-REMOTE
ReqID: R2797

Hiring Ranges:Remote France€65.000—€87.000 EUR

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