Senior Android Software Engineer - Barcelona

Proton; Barcelona; Presencial; EUR 60.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Stock Options

Learning & Development

Health coverage

Retirement options

Wellness support

In-person collaboration

Food provided

Transport allowance

Flexible schedule

Descripción de la vacante

Proton in Barcelona is seeking a senior Android engineer to build privacy‑first products across Proton Pass, Payments, and VPN. You’ll develop high‑quality Android experiences using Kotlin and Jetpack Compose, collaborating with product, design, and cross‑team engineers to ship features with end‑to‑end ownership.

Join a team focused on scalable architectures, performance, and security. You’ll contribute to a Rust‑backed core while delivering delightful user experiences for millions of users

Formación

• Extensive experience shipping Android apps with Kotlin.
• Strong knowledge of Jetpack Compose and modern Android practices.
• Experience taking features from scoping and technical design through to delivery and iteration.
• Ability to work across large codebases and collaborate across multiple teams.
• Experience mentoring engineers and raising the technical bar within a team.
• Solid understanding of performance, concurrency, multithreading, and mobile memory management.
• Familiarity with privacy, security, encryption, sync systems, or offline-first architectures is a plus.

Responsabilidades

• Build high-quality Android experiences using Kotlin and Jetpack Compose.
• Collaborate closely with product, design, and fellow engineers to ship features.
• Own end-to-end delivery of features from scoping to iteration and release.
• Contribute to scalable, testable mobile architectures and code quality.

Conocimientos

Kotlin

Jetpack Compose

Android development

Performance optimization

Memory management

Cross-team collaboration

Mentoring

Descripción del empleo

The Role

Based in our Barcelona office, you’ll join one of several high‑impact product teams across Proton Pass, Payments, and Proton VPN, helping build privacy‑first products used by millions around the world. From secure password management and identity protection to encrypted financial tools and internet freedom products that help users bypass censorship and surveillance, you’ll work on technically ambitious products with real‑world impact. As a senior engineer, you’ll collaborate closely with product, design, and engineers across Proton to build and ship high‑quality Android experiences using Kotlin, Jetpack Compose, and an increasingly shared Rust core, helping define what "great" looks like for privacy‑focused consumer products at scale.

What We Are Looking For

• You have extensive experience building and shipping high‑quality Android applications using Kotlin.
• You have strong experience with Jetpack Compose and modern Android development practices.
• You care deeply about product quality, usability, and delivering exceptional user experiences.
• You have experience taking end‑to‑end ownership of features, from scoping and technical design through to delivery and iteration.
• You have strong experience building maintainable, scalable, and testable mobile architectures.
• You are comfortable working across large codebases and collaborating across multiple teams.
• You have experience mentoring engineers and raising the technical bar within a team.
• You have a strong understanding of performance, concurrency, multithreading, and mobile memory management.
• You understand mobile scalability considerations, including caching, network usage, responsiveness, and offline behaviour.
• You are comfortable navigating ambiguity and contributing to product and technical discussions.
• Experience with privacy, security, encryption, sync systems, or offline‑first architectures is a strong plus.
• Rust experience is a plus, but not required, as we continue moving toward a platform‑independent Rust logical core that communicates with our Android applications through generic interfaces.

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

• Work that Matters: millions of people trust Proton with their privacy. We answer only to our users — not advertisers, not investors with conflicting agendas, not governments. The work you do here is real, and the impact is measurable. (read more about our impact here)
• Stock Options: from day one you have a real stake in what we’re building. When Proton wins, you win.
• Technology: you’ll get the right hardware and the right software you need to do your best work.
• Learning & Development: we invest in your growth because sharp people make us better. Proton is one of the fastest ways to accelerate your career because you’ll be thrown into real challenges, with real ownership, from day one.
• Employee Benefits: your wellbeing isn’t an afterthought. We offer strong health coverage, solid retirement options, generous leave, and wellness support so you can bring your best self to work every day.
• In‑Person Collaboration: amazing things happen when passionate, smart, and purposeful people get together in the same room. With offices across Geneva, Zürich, Barcelona, London, and more, you’ll spend most of your time collaborating face‑to‑face with people who genuinely care about what they’re building.
• Food: lunch and snacks are on us every day in our offices so you can focus on the work and not on what’s for lunch.
• Transport: getting to the office shouldn’t cost you. We cover public transport, bike allowances, or parking, whichever works for you.
• Flexible Working: you own your schedule. Set hours that work for you and your team — because outcomes matter more than when the clock says you started.

Compensation Range

60,000 – 110,000 EUR gross annually. Final compensation will be determined based on the candidate’s qualifications, skills, and previous experience.

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.

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 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 data or if you wish to access, correct or delete your data, please contact our privacy team at [e-mail]. 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.