Senior Frontend Engineer (Kotlin) - Frontend Core
Trading212 · Berlin
What this role requires
4 requirements, read out of the advert rather than guessed from the job title:
Also mentioned, not required: Sentry, Amplitude, English (B2). Worth having, but their absence is not what gets a CV filtered out.
See how often each of these is required across open frontend roles in Europe.
Free, no card. Tells you which of them your CV evidences and which it only implies.
Job description
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 5 million clients, with more than €30 billion in assets under management - a testament 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
Read the full description (31 more sections)Show less
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 end users
Comfortable working autonomously and making decisions without waiting for full consensus
Nice to have (Optional)
Hands-on experience with nx or pnpm workspaces specifically
Familiarity with Vite and Expo for tooling or build configuration
Exposure to Reanimated or React Native Gesture Handler
Background in fintech or a high-scale consumer app where release reliability was business-critical
What we offer
Challenges that will help you grow and realise your potential
Opportunity to make a big Impact - you will build innovative services used by millions of investors to build wealth
Work with smart, spirited, helpful, high-performing colleagues with a common goal
An environment where nothing is set in stone
Appreciation for your talent and ideas
Generous remuneration package including annual bonuses
Excellent social benefits package, including private health insurance, sports card and 25 days of paid vacation per year
Delicious treats and a spacious game room
Are you ready to accelerate your career with us? We'd love to hear from you!
We process applicant data confidentially and in accordance with applicable data protection laws. We may use AI-powered tools to help review applications, but all hiring decisions are made by our human recruitment team. Where required by law, we rely on your consent to use these tools. You may withdraw this consent or exercise your data protection rights at any time by contacting us.
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