Job
- Level
- Senior
- Job Field
- Web, Software, Full Stack
- Employment Type
- Full Time
- Contract Type
- Permanent employment
- Location
- Berlin
- Working Model
- Onsite
Job Summary
In this role, you will develop scalable Buy Now, Pay Later products, integrate APIs into a modern microservice architecture, and support the team with continuous improvement and mentoring of junior developers.
Job Technologies
Your role in the team
- At Ratepay, we develop next-generation payment solutions that power the checkout experience for some of Germany's largest online retailers and marketplaces.
- As a Senior Software Engineer (m/f/d), you'll play a key role in building secure, scalable, and user-friendly Buy Now, Pay Later products in a dynamic and fast-growing e-commerce sector.
- You'll join a collaborative, agile team dedicated to enabling seamless commercial and technical onboarding of merchants, marketplaces, and resellers.
- Our focus is on modern integrations, fast onboarding, and intuitive configuration—making it easy for merchants to go live quickly while also improving the experience for internal Ratepay teams involved in the process.
- You take ownership of the design, development, operation and continuous improvement of our systems, ensuring high performance and stability.
- You integrate internal and external APIs within a modern microservice architecture, with scalability and maintainability in mind.
- You contribute actively to our agile software engineering process, collaborating with cross-functional teams including Product, Infrastructure, and Risk.
- You mentor and support junior engineers, sharing knowledge and fostering a culture of learning and growth.
- You bring in your ideas and technical experience to continuously challenge the status quo and drive innovation within the team.
- You will be responsible for the operational success of the team's services, including being on call.
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Our expectations of you
Qualifications
- You possess solid frontend skills using Vue.js or another modern JavaScript framework.
- You are proficient in Spring/Spring Boot, Docker, Git, and Maven.
- You have strong database knowledge, especially with PostgreSQL, and some familiarity with MongoDB or Redis is a plus.
- You understand RESTful APIs, OAuth2, event-driven architectures like Kafka, and microservices.
- Ideally, you are familiar with Kafka Streams and contract testing tools such as PACT.
- You are comfortable working in agile teams and embrace a DevOps mindset: "you build it, you run it."
Experience
- You have 6+ years of hands-on experience in Java backend development, with Kotlin being a plus.
- You have experience building and deploying applications in cloud environments, preferably AWS.
- Experience in fintech or risk-related systems would be an additional advantage.
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What we offer
- At Ratepay, you'll work in an environment built on trust, ownership, and collaboration.
- We believe in empowering engineers with autonomy, modern tooling, and the space to make meaningful technical decisions.
- You'll work closely with experienced colleagues from diverse backgrounds, benefit from transparent communication, and have the opportunity to grow both personally and professionally.
- We value balance, flexibility, and a healthy work culture—because great products are built by teams that thrive.
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Benefits
Health, Fitness & Fun
Work-Life-Integration
Topics that you deal with on the job
Job Locations
This is your employer
Ratepay
Ratepay is innovation and diversity. We develop customized, innovative payment solutions that meet our customers' needs. Founded in 2009, we were a financial technology company before the word "FinTech" even existed. Today, we are the leading provider of white label solutions in Europe and proud to have closed the gap.
Description
- Company Type
- Established Company
- Working Model
- Onsite
- Industry
- Banking, Finance, Insurance
Senior Software Engineer - Full Stack
- Location
- Berlin
- Working Model
- Onsite
- Diversity
- Open for all genders
- English Only
- English only required
