Senior Software Engineer - JavaScript Fullstack (m/w/d)

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 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 have 6+ years of hands-on experience in Java backend development, with Kotlin being a plus.
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 are comfortable working in agile teams and embrace a DevOps mindset: “you build it, you run it.”
Experience in fintech or risk-related systems would be an additional advantage.
At Ratepay, you’ll work in an environment built on trust, ownership, and collaboration. 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 dare to design the future of payments, together. Born in the heart of Berlin’s fintech hub, Ratepay has passionately crafted tomorrow’s payment solutions for over a decade.