Senior Fullstack Software Engineer (Kotlin/Java/React) - Fintech

Job DescriptionWe are on the lookout for a Senior Fullstack Software Engineer (Kotlin/Java/React) to join our Fintech team and build worldwide innovative Wallet, Payment, and Anti-Fraud solutions with us. Work and scale our internal Payments engine that would handle payments for the entire Delivery Hero. If you're a creative problem solver who is eager to deliver solutions and hungry for a new adventure, an international workplace is waiting for you in the heart of Berlin! Be part of building the financial backbone of Delivery Hero. You’ll develop products that empower millions of customers and merchants, from seamless payments to innovative financial solutions like wallets and credit. Design, build, and deliver highly scalable software systems operating in complex, global business environments, used across more than 70 countriesLead backend and frontend engineering efforts with a strong focus on distributed systems, leveraging Java, Kotlin, modern frameworks such as Spring / Spring Boot, Hibernate, and JUnit and frontend technologies such as React / TanStack.Own services end-to-end by embracing a true “you build it, you run it” mindset, with deep involvement in infrastructure automation and continuous deployment.Drive high-quality software design by systematically applying design patterns, SOLID principles, and Domain-Driven Design (DDD).Build secure, resilient systems by applying secure coding best practices throughout the development lifecycle.Influence engineering culture through hands-on leadership, technical mentorship, and continuous improvement.