Dreaming about living in Barcelona while working on large-scale mobile engineering challenges? A leading European tech marketplace is expanding its Android Platform team in Barcelona and is looking for Senior Android Engineer who want to work on complex engineering problems at massive scale — while relocating to one of Europe's most attractive tech hubs. This is not a feature-delivery role. You would join the team responsible for the foundations of the Android ecosystem itself: build systems, developer experience, CI/CD, modularization, release infrastructure, tooling, performance, and scalability across a product used by millions of users and supported by a 10+ year Android codebase with 50+ modules. The company operates one of the largest second-hand marketplace platforms in Southern Europe, handling hundreds of millions of listings and a huge volume of daily interactions across mobile-first products. The engineering culture is highly product-driven, platform-oriented, and focused on scalability, autonomy, and technical excellence. For engineers who enjoy solving infrastructure and platform challenges, this is the kind of environment where your work has a direct impact on how entire mobile teams build, test, release, and scale applications. Tech stack: Kotlin, Android SDK, Gradle, CI/CD, Git Hub Actions, Bitrise, modular architecture, Python, AWS. Location: Barcelona (hybrid model) Strong relocation package included: • €2,500 relocation support within Spain • €3,500 relocation support from Europe • €5,000 relocation support from outside the EU • Full visa sponsorship • Legal & administrative support for all work documentation and relocation processes Additional benefits include: €2 K learning budget Private health insurance Flexible working hours Gym & wellness plan Home office support Top-tier hardware 26 vacation days Free office meals Language classes If you are interested in Android Platform Engineering, Dev Ex, Gradle optimization, CI/CD automation, and large-scale modular systems, feel free to reach out.