Lead Java/Kotlin Software Engineer (m/f/d)

Deine Mission

Born in the heart of Berlin’s fintech hub, Ratepay has passionately crafted tomorrow’s payment solutions for over a decade. Today, we’re proud to be Europe’s leading white-label Buy Now, Pay Later provider. 
Our success comes from teamwork, openness, and continuous improvement. We value shared goals over egos, fostering a culture of courage, commitment, and warmth. Our dedicated team of 200+ professionals powers the entire payment value chain - from integration to AI-driven risk management and dunning – delivering tailored payment solutions for businesses across Germany, Austria, Switzerland, and beyond. 
As a Lead Software Engineer (m/f/d) at Ratepay, you will make a significant contribution to our shared mission of building and developing secure and simple payment solutions for the online retail market, which still continues to grow. 

Key Responsibilities: 

• Lead the development, operation, and continuous improvement of scalable software systems.
• Take on a prominent role in your team and be the initiator and driver of projects, initiatives and improvements.
• Integrate internal and external APIs in a microservices architecture, ensuring system interoperability. 
• Actively participate in the agile development process, collaborating with cross-functional teams to deliver features. 
• Support and groom the entire engineering team, fostering growth, knowledge sharing, and collaboration through methods like pair programming and code reviews. 
• Ensure adherence to best practices in software development to maintain high code quality. 
• Collaborate with the team and the Principal Engineer to make key technical decisions. 
• Ensure alignment between business objectives and technical implementation.

Das bringst Du mit

• At least 10 years of professional working experience in JVM based backend development
• Hands-on expertise in Software Engineering using Java, Spring/SpringBoot, Kotlin, Git, Maven, Docker, Jenkins and solid experience with cloud technologies (AWS)
• Experience in leading and driving initiatives and projects
• Very good conceptual knowledge about RESTful APIs, microservices, event-driven architecture (Apache Kafka), OAuth (Auth0) and Testing
• Involvement in every step of the software lifecycle and internalisation of the DevOps approach ("you build it, you run it")
• Self-organised work as well as collaboration within the team and with other teams at Ratepay to deliver high value to our stakeholders and merchants
• Very good English language skills

 
Due to our hybrid work model, we are looking for candidates based in or near Berlin. Unfortunately, we are currently unable to support visa or relocation processes.

Darauf kannst Du Dich bei uns freuen

We're more than just a workplace – we're a vibrant community of innovators, collaborators, and visionaries who love what we do and reward those who work with us. Here, your career isn't just a job. It's an opportunity to thrive, learn, and make a difference. Take a look at these great personalised benefits of working at Ratepay. On a monthly basis, you can choose between mobility, fitness, food, training and much more. 

• Flexible working hours
• Work remotely (EU for up to 4 weeks a year)
• 28 vacation days per annum.
• Financial security including pension plan 
• Monthly lunches
• Learning and development (Access to various self-development platforms such as language learning and skills enhancement
• Gym membership or public transport allowance
• Ratepay community: Our office has a floor which is dog-friendly. So, bring your pawsome pet to work when needed.

Chancengleichheit & Vielfalt

We value our diversity and welcome everyone to our team. Regardless of ethnic and social background, religious beliefs, worldview, gender, sexual orientation, physical and mental limitations, age, marital status, educational background and nationality. With over 200 employees and 40 different nationalities, we take our values seriously. These include ownership, growth, integrity, collaboration, customer centricity and inclusion.