Senior Android Software Engineer – London

Senior Android Software Engineer – London Overview

Join Proton and contribute to building a better internet where privacy is a fundamental right. Founded in 2014 by scientists from CERN, Proton has developed the world’s largest encrypted email service and expanded into various privacy-focused tools used by millions globally. Our team of over 500 members across more than 50 countries is dedicated to creating impactful products while maintaining a light hierarchy and a focus on meaningful work.

The Role

As a Senior Android Software Engineer based in our London office, you will be part of a high-impact product team working on Proton Drive, Payments, and Account. Your role will involve developing privacy-first products that are used by millions, including encrypted cloud storage and secure account infrastructure. You will collaborate closely with product managers, designers, and engineers to create high-quality Android experiences using Kotlin, Jetpack Compose, and an increasingly shared Rust core. You will take end-to-end ownership of your work and help define excellence in privacy-focused consumer products.

What We Are Looking For

• Extensive experience in building and shipping high-quality Android applications using Kotlin.
• Strong experience with Jetpack Compose and modern Android development practices.
• A deep commitment to product quality, usability, and delivering exceptional user experiences.
• Experience in taking end-to-end ownership of features, from scoping and technical design through to delivery and iteration.
• Strong background in building maintainable, scalable, and testable mobile architectures.
• Comfortable working across large codebases and collaborating with multiple teams.
• Experience mentoring engineers and raising the technical standards within a team.
• Strong understanding of performance, concurrency, multithreading, and mobile memory management.
• Knowledge of mobile scalability considerations, including caching, network usage, responsiveness, and offline behavior.
• Ability to navigate ambiguity and contribute to product and technical discussions.
• Experience with privacy, security, encryption, sync systems, or offline-first architectures is a plus.
• Rust experience is a plus, but not required.

If you feel you could be a great fit even if you don’t meet all the requirements, we encourage you to apply.

What We Offer

• Work that matters: Your contributions will impact millions of users who trust Proton with their privacy.
• Stock options: All employees have the opportunity to own a part of the company from day one.
• Technology: We provide the right hardware and software to help you excel in your role.
• Learning & Development: We invest in your growth, offering real challenges and ownership from the start.
• Employee Benefits: Comprehensive health coverage, retirement options, generous leave, and wellness support.
• In-Person Collaboration: Work alongside passionate colleagues in our offices across various cities.
• Food: Enjoy complimentary lunch and snacks in our offices.
• Transport: We cover public transport, bike allowances, or parking costs.
• Flexible Working: Set your own hours that work for you and your team.

Our Commitment to Diversity and Inclusion

At Proton, we believe that diversity drives innovation and strengthens our mission. We are dedicated to fostering an inclusive environment where all individuals feel valued and empowered. We strive to create equal opportunities and promote open dialogue to ensure every voice is heard and respected.

If you require any support or reasonable adjustments during the hiring process, please inform your talent partner.

Degree Requirement: Not Specified

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