Senior Android Developer (Inbox) in London

Join Proton and build a better internet where privacy is the default. At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security and freedom online.

Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive and Proton Pass. These tools empower individuals and organisations to take control of their personal data, break away from Big Tech’s invasive practices and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information.

Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries. We value intelligence, learning potential and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online.

Hiring at Proton is highly selective, with less than 1% of candidates hired. You’ll have the opportunity to work with many of the world’s top minds in their fields. We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics.

Role overview:

As a fullstack cross-platform Senior Android Engineer, you’ll play a pivotal role in developing Proton Inbox using Jetpack Compose and Rust. You’ll lead with an end-to-end ownership approach, ensuring timely delivery of high-quality, scalable solutions that will delight our customers.

Key responsibilities:

• Develop and maintain cross-platform mobile applications for Android using a blend of cross-platform (Rust) and native technologies (Kotlin).
• Take end-to-end ownership of mobile application development projects.
• Foster a culture of innovation by exploring new technologies, methodologies and approaches to mobile development.
• Optimise mobile applications for performance, usability and responsiveness across different devices and screen sizes.
• Master memory management, multithreading and concurrency mechanisms to enhance performance and responsiveness of mobile applications.
• Design for scalability, considering factors such as data caching, network bandwidth and server load.
• Prioritise customer satisfaction by maintaining a customer-centric mindset throughout the development process.

The ideal candidate will bring:

• Bachelor's degree in Computer Science, Engineering or related field (or equivalent work experience).
• Excellent problem-solving skills and the ability to think outside the box.
• Passion for continuous learning and driving change in the rapidly evolving field of mobile development.
• Excellent communication and interpersonal skills.
• Proven experience developing mobile applications for Android using Kotlin.
• Proficiency with Jetpack Compose for Android, and familiarity with Rust.
• Strong understanding of mobile app architecture, design patterns and best practices.
• Knowledge of memory management techniques and best practices.
• Experience with multithreading and concurrency in mobile applications.
• Good understanding of scalability considerations when it comes to engineering mobile applications.
• Previous experience working in a fast-paced, scale-up environment.

Even if you don’t meet all the requirements listed above but feel you could still be a great fit, please do apply.

What we offer:

• Technology: we provide all the devices and software you need to excel in your role.
• Learning & Development: we are committed to your professional growth.
• Employee Benefits: comprehensive health insurance plans, competitive retirement savings options, generous vacation/leave policies and wellness programs.
• Stock Options: at Proton, we are all owners of the company and you get stock options when you join us.
• In-Person Collaboration: collaboration is easier and more effective in person.
• Food: lunch and snacks are provided by Proton every day at our offices.
• Transport: we’ll always support our employees with transport costs.
• Flexible Working: you can define your own working hours as long as it works with team meetings.
• Work that Matters: Proton is a community-first organisation.

Our commitment to diversity and inclusion:

At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals feel valued and empowered.

If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.