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

Ratepay • Berlin

Full-time

Berlin

from today

Your 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.

Your Profile

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.

Equal Opportunities & Diversity

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.

The sweet spot! Let’s talk perks.

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

Medical extras (Eye examination etc.)

Monthly lunches as well as Beets & Roots discounts

Learning and development (Access to various self-development platforms such as language learning and skills enhancement.

Community connect. We take certain days off to give back to the community as a unit. (Animal shelters, homeless aids, and various charities)

Health & wellbeing

Gym memberships and fitness

Ratepaw community: Our office has a floor which is dog-friendly. So, bring your pawsome pet to work when needed.

Our Recruitment Process

Step 1: Intro Call with a Senior Talent Partner

The first call with our recruiter is meant to be an introduction to ratepay, our culture and recruitment process.

We want to get to know you better, understand who you are beyond your CV and find out what excites you.

Step 2: Meet your future Manager

This step is designed to get to know your future manager and the role better.

During this conversation we will dive deeper into your experience and share more about the team you would work with and share expectations from both sides.

Step 3: Team interview & skill assessment

This step looks slightly different in different business areas but is to assess technical and culture add.

It usually consists of a role-specific case study or technical assessment as well as assessing values alignment with some senior members of the team you would be joining.

Step 4: Coffee chat (optional)

This step doesn't occur in every process, it depends on the role.

The coffee chat would generally take place with either a senior stakeholder from the business area you are joining such as a C-level leader or Head of department, or in some cases with a Senior HRBP.

Ready to shape the future of digital payments? Join our team

Apply now!

Want to learn more about other opportunities at ratepay? Explore our other departments:

Commercial Customer Service Data & Analytics Finance & Controlling Legal, Compliance, IT Security Marketing & Communications People & Organisation Product Risk Management Strategy & Special Projects Working students, Interns Initiative application