Senior Software Engineer; Java​/Kotlin - Fintech

Company Description

As the world’s pioneering local delivery platform, our mission is to deliver an amazing experience, fast, easy, and to your door. We operate in around 65 countries worldwide powered by tech, designed by people. As one of Europe’s largest tech platforms, headquartered in Berlin, Germany, the company has been listed on the Frankfurt Stock Exchange since 2017 and is part of the MDAX stock market index.

We enable creative minds to deliver solutions that create impact within our ecosystem. We move fast, take action and adapt. No matter where you’re from or what you believe in, we build, we deliver, we lead. We are the company.

We are on the lookout for a Senior Software Engineer (Java/Kotlin) 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 company. 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 the company. You’ll develop products that empower millions of customers and merchants, from seamless payments to innovative financial solutions like wallets and credit. Your work will support our path to profitability by creating financial flexibility for users and enabling smooth transactions across our markets.

As a Software Engineer Specialist (Java/Kotlin), you will be focused on building and maintaining the core payment features that enable us to manage the lifecycle of different payment flows as well ensuring consistency and reliability of payment operations.

• Design, build, and deliver highly scalable software systems operating in complex, global business environments, used across more than 70 countries
• Lead backend engineering efforts with a strong focus on distributed systems, leveraging Java, Kotlin, and modern frameworks such as Spring / Spring Boot, Hibernate, and JUnit.
• 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.
• Define and execute highly effective testing strategies by applying unit, integration, contract, and end-to-end testing at scale.
• 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.
• Rapidly diagnose and resolve complex production issues across multi-region, distributed microservices platforms.
• Set the bar for operational excellence, including on-call standards, reliability engineering, and best-in-class observability practices.
• Influence engineering culture through hands‑on leadership, technical mentorship, and continuous improvement.

• Proven experience designing and delivering software systems in highly complex business domains at global scale.
• Deep backend engineering expertise with a strong preference for distributed systems.
• Hands‑on mastery of Java, Kotlin, Spring / Spring Boot, Hibernate, and JUnit.
• A strong engineering ownership mindset with a passion for automation, CI/CD, and reliability.
• Exceptional problem‑solving skills, curiosity, and a creative, outside‑the‑box approach to complex challenges.
• A high bar for quality, performance, and craftsmanship — with a relentless attention to detail.

Ensuring you and all our Heroes are looked after, happy, and healthy is always on the menu. Because if you’re in good shape, then we’re in good shape.

Make the most of our hybrid working model and join the team for face‑to‑face connection and collaboration in our beautiful Berlin campus 2 days a week.

• We offer 27 days holiday with an extra day on 2nd and 3rd year of service
• We will support you in developing yourself and your career growth opportunities: 1.000 € Educational Budget, Language Courses, Parental Support and access to the Udemy Business platform to explore a variety of online courses.
• Get moving and release those wonderful,…