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Senior Android Engineer (Pass)

Hybrid in Barcelona +1·Full-time·Added 6 days ago (last checked 8 Oct)

Proton

17 open roles

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Overview

Salary: €60,000 - €110,000 a year
About €3,460 - €5,790 a month after tax, or €3,480 - €6,650 under the Beckham regime.
Work mode: Hybrid, Barcelona / Paris
Contract: Full-time
English: Required
Experience: Senior level
Education: University degree
Benefits: Private health insurance

Visa options

The ad doesn’t mention sponsorship
Not a refusal, but not a yes. Worth asking in your first message.
Pay clears the EU Blue Card threshold
The advertised pay is over the €41,356 bar, so the route exists if Proton uses it.

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Skills

Nice to have

Requirements

What we're looking for

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
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.

Pay & benefits

What you'll get

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
Learning & Development: we are committed to your professional growth - Proton offers various learning opportunities, including training programs, conferences/events and continual learning
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, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje and Taipei - you can enjoy working from home for up to 30% of the time, while enjoying great company culture during our three core days in the office
Food: lunch and snacks are provided by Proton every day at our offices
Transport: we'll always support our employees with transport costs through subsidising public transport, bike allowances or parking spaces based on your office location
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, 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 (here)

60.000 - 110.000 EUR gross annually

Final compensation will be determined based on the candidate's qualifications, skills, and previous experience

The role

As a fullstack cross-platform Senior Android Engineer, you'll play a pivotal role in developing Proton Pass 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. Your ambition and enthusiasm will drive innovation and excellence both in Proton Pass and SimpleLogin products.

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

About Proton

Proton is a privacy-focused technology company known for its encrypted email service Proton Mail, along with Proton VPN, Proton Drive, Proton Calendar, and Proton Pass. Founded by scientists who met at CERN, the company is headquartered in Geneva, Switzerland, and operates as a non-profit foundation structure, with a mission to build an internet that respects privacy. Proton has grown to serve over 100 million users worldwide, making it a significant player in the privacy tech industry.

In Spain, Proton has established a growing engineering and product presence, particularly in Barcelona, where it hires for roles such as Senior Android and iOS engineers, engineering managers, and test automation engineers. The company's work culture emphasizes privacy, security, and open-source values, and it is known for its remote-friendly policies and international team. For international professionals, Proton offers the opportunity to work on products used by millions, with a strong focus on user privacy and a collaborative, mission-driven environment.

Industry: Privacy Tech
Founded: 2014
Employees: 500–1,000
Headquarters: Geneva, Switzerland
In Spain: Barcelona
Website: proton.me

Good to know if you are moving

Proton has a strong international presence with offices in Geneva, Zurich, and Barcelona, offering opportunities for relocation within Europe.
The company is known for its mission-driven culture, focusing on privacy and security, which can be appealing for professionals passionate about these values.
Proton offers competitive salaries and benefits, including flexible working arrangements and opportunities for professional growth.
The Barcelona office is a hub for engineering and product roles, making it a great location for tech professionals looking to work in a vibrant city.
Proton's products are used by over 100 million people, providing a large-scale impact for employees working on their products.

In their own words

About the company & team

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, founded by a team of scientists from CERN, 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. In some cases, Proton's services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations.

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, coming from the world's top companies and universities. 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. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You'll have the opportunity to work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions.

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. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here!

Additional information

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.

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 its 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 anonymise 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 careers@proton.ch.

Proton does not accept unsolicited CVs 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.

All open roles at Proton