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By applying at a position at Proton AG (“Proton”, “we”, “us”), you understand that your personal data is processed according to the following privacy policy and agree with it. This policy states (i) what data we collect, (ii) the use we make of such data, (iii) the safeguards we put in place to protect your data and (iv) your rights as data subject. This Privacy Policy is complementary to our general privacy policy to the extend applicable when visiting our website. Legal Framework Proton AG is a Company formed under Swiss law and whose Headquarters are located at Route de la Galaise 32, 1228 Plan-les-Ouates, Switzerland. For all questions, you can reach us at [email protected]. We are subject to the Swiss Federal Act on Data Protection (“FADP”). We are also GDPR compliant. The designated representative of the Company in the European Union (notably for the purpose of art. 27 GDPR) is Proton Europe Sàrl, Rue de Grünewald 94, L-1912 Luxembourg. Data collection and usage Your personal data are processed for the purposes of managing our recruitment-related activities, which include setting up and conducting interviews and tests for applicants, evaluating, and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation, “GDPR”) as necessary for the purposes of the legitimate interests pursued by us, which are the solicitation, evaluation, and selection of applicants for entering a contractual relationship. Your personal data are retained by us for an initial period of 720 days (“Initial Period”). 2.1 Upon application via our Career page When applying to a position at Proton, you provide us with personal data such as name, surname, date of birth, address, e-mail address, CV, etc., which we save in our Recruiting Database (“Database”, see below) and process according to this privacy policy. 2.2 Upon sourcing or recommendation If you are sourced by us and added manually to our Database, the personal data is obtained from public sources, such as LinkedIn. If you are referred to us by a third party for potential employment, the personal data added to our Database is that provided by said third party, and/or data available publicly. In all cases, upon inclusion in our Database, you will receive an email informing you of your inclusion and of the processing of your personal data. 2.3 At the end of the Initial Period At the end of the initial period, you will receive an email asking for your permission to extend the period of retention of your personal data, for the purpose of optimising our processes and propose subsequent positions that might be fit for you. If you give us your consent, we will be able to store and process the data for another 270-day period. If you don’t consent, your profile and related data will be deleted from our Database at the end of the initial period. Data Processor Our Database is operated by Greenhouse, according to their privacy policy and terms of service. Your personal data is thus shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America. The transfer is subject to appropriate additional safeguards, including the Standard Contractual Clauses, as issued by the European Commission. Right to access, rectification, erasure, portability, and right to lodge a complaint As a company that is complying with the Swiss FADP and the EU GDPR, your privacy is important to us, and we are committed to protecting and safeguarding your data privacy rights. You have the right to access, restrict, rectify, or delete your personal data. You also have the right to withdraw your consent at any time. In addition, you may lodge a complaint to the Swiss Federal Data Protection and Information Commissioner. We remain available via email to [email protected] for any inquiry. 5. Modifications to privacy policy We reserve the right to periodically review and change this policy. Continued consent and application will be deemed acceptance of such changes.
Careers at Proton
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Join Proton and build a better internet where privacy is the default
Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right. Since then, we’ve built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar—tools used by millions globally to protect their freedom, fight censorship, and keep their data safe. In some situations, Proton has literally helped save lives.
We are profitable, independent (no VC control), and selectively hire from the top ~1% of applicants. Our 500+ team members across 50+ countries come from leading organisations and elite academic backgrounds. We move fast, keep hierarchy light, and prioritise impact over optics. If you want to do meaningful work with exceptionally high-caliber people, this is it. Join us and do work you can truly be proud of. Check our open-source projects here!
The Role
As an engineer on our Android team, you’ll build and ship features across Proton’s suite of Android applications, working closely with product and engineering teams to define what “great” means on the Android platform.Quality is a core expectation: you’ll help maintain and expand our testing stack, including unit tests for business logic, API-stubbed pseudo-integration tests, UI snapshot coverage, and end-to-end tests. You’ll join a team that combines deep technical expertise with a focus on simple, usable interfaces, shipping privacy-preserving products used by millions.
What you'll do
- 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: you'll be comfortable with scoping projects, walking back from deadlines and being able to discern the important from the superfluous
- Foster a culture of innovation by exploring new technologies, methodologies and approaches to mobile development – we tackle complex engineering challenges with creativity and ingenuity
- 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, continuously seeking feedback and iterating to improve the user experience
- Build and optimise push notification flows using FCM and Android notification channels to deliver timely, reliable notifications while respecting modern background and battery constraints.
- experience with local data storage and sync (Room/SQLite or equivalent) for offline-capable apps
What you'll 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 to overcome challenges
- 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 as well as cross-platform technologies
- 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
What We Offer
- Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office.
- Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
- Food: Lunch and snacks are provided by Proton every day at our offices.
- Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location.
- Stock Options: At Proton, we are all owners of the company and you get stock options when you join us.
- Flexible Working: You can define your own working hours as long as it works with team meetings.
- Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
- Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
- Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here.
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, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.
If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.
Candidate Privacy Notice
When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills.
If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at [email protected].
Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.
To learn more about our privacy policy, please visit our privacy policy page.
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