Software Engineer, Java​/Kotlin - Payment Processing; 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 looking for a Software Engineer, Java OR Kotlin (Fintech) to join our Payments team and build worldwide innovative Wallet, Payment, and Anti‑Fraud solutions. 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!

Being 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 65 countries.

Some problems we are working on in the payments domain:

• How do we improve the payment success rate?
• How do we reduce the number of fraudulent transactions by keeping the payment journey simple?
• How do we handle the high load during lunch and dinner peak time in a cost efficient way?
• Which payment options to show customers for the best payment experience.

• 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.

• 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.

• Hybrid working model with face‑to‑face collaboration on site 2 days a week.
• 27 days holiday with an extra day on the 2nd and 3rd year of service.
• Professional development support: €1,000 educational budget, language courses, parental support, and access to the Udemy Business platform.
• Health and wellness: health check‑ups, meditation, gym & bicycle subsidy.
• Financial support: employee share purchase plan, sabbatical bank, public transportation ticket discount, life & accident insurance, corporate pension plan.
• Food and social: digital meal vouchers, food vouchers, corporate discounts.

We believe diversity and inclusion are key to creating not only an exciting product, but also an amazing customer and employee experience. We do not discriminate on the basis of racial identities, religious beliefs, color, national origin, gender identities or expressions, sexual orientations, age, marital or disability statuses, or any other aspect that makes you, you.

Severely disabled applicants with equal qualifications will be given preferential consideration.

You're welcome to share your pronouns (he, she, they) right from the start so we can address you respectfully from our first contact.