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 have built the world's largest encrypted email service 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. We are profitable, independent (no VC control), and selectively hire from the top 1% of applicants. If you want to do meaningful work with exceptionally high-caliber people, this is it. Check our open-source projects here
The Team We're a tight-knit, passionate Android engineering team building privacy‑first apps trusted by millions of people around the world. Whether you're deep in Espresso tests or debating architecture over lunch, you'll be surrounded by people who are as excited about quality as you are. If you love Android, hate flaky tests, and want your work to actually matter — you'll fit right in.
Tech Stack and Tools Kotlin, Java, Espresso, UI Automator,



Maestro
Design, develop, and maintain automated test frameworks and pipelines for Proton's Android applications
Write and execute UI, functional, integration, and end‑to‑end test suites using modern Android testing tools and best practices
Work hand‑in‑hand with Android developers to define testability requirements and embed automated tests into CI/CD workflows
Perform exploratory and risk‑based testing with a sharp eye on privacy, data integrity, and security behavior
Own and evolve the Android test infrastructure, including emulator farms, device labs, and test environment configurations
Dig into test results, spot patterns, and turn findings into actionable improvements that raise the quality bar
Champion QA best practices across the team and help shape how we think about quality at every stage of development
Review test code with the same rigor as production code — maintainability a

📌 Android Test Automation Engineer (Barcelona)
🏢 Proton
📍 Barcelona