Our mission is to enable everyone to build wealth We reinvent how trading and investing work by creating exceptional products people love. Fostering a culture of excellence and high velocity is the key to our success. Today, we serve over 6 million clients, with more than €50 billion in assets under management - a testimony to the scale and trust we’ve built in just a few years. What you’ll do * Own and evolve our monorepo, ensuring it stays healthy, performant, and easy to work in as the codebase grows * Design, build, and maintain CI/CD pipelines for React Native and web targets, driving reliability and fast feedback loops for the engineering team * Author and maintain shared TypeScript libraries — state management patterns, networking layers, error handling utilities — consumed across all frontend products * Own the mobile release process end-to-end, including Android build configuration, versioning, and deployment automation * Integrate and maintain observability tooling (Sentry, Amplitude) at the platform level,



so product teams get reliable instrumentation out of the box * Identify and resolve build bottlenecks, dependency issues, and tooling gaps that slow down engineering velocity * Collaborate closely with product frontend teams to understand their pain points and translate them into platform improvements What you need to have * At least 4 years of professional experience in frontend or mobile engineering, with a meaningful portion spent on platform, infrastructure, or developer tooling work * Production-grade TypeScript - strong typing discipline, not just familiarity * Hands‑on React Native experience in a production app, including an understanding of the native layer * Practical Kotlin experience on Android - native modules, build configuration, or Android‑side CI/CD work * Direct involvement in CI/CD pipeline ownership or significant contribution — mobile or frontend, any tooling * Ability to think in systems and write code for other engineers, not just

📌 Senior Frontend Engineer (San Sebastián)
🏢 Trading 212
📍 San Sebastián