Senior Backend Engineer (Berlin)

About the role

We are looking for a Senior Backend Developer who will take ownership of crucial backend engineering activities at Kadmos. As a regulated salary payment provider in the shipping industry, we are building secure, reliable, and scalable financial solutions that empower seafarers and shipping companies worldwide. You will play a central role in shaping the backbone of our platform and driving innovation in a highly regulated environment. What you can expect Own the backend. You will be responsible for developing and maintaining core backend systems, building reusable libraries, implementing complex financial components, and integrating with external service providers. Work with independence . You'll be trusted to take full ownership of your responsibilities, while collaborating closely with product, compliance, and engineering teams. Impact at scale . You will contribute directly to a platform serving the global shipping industry, with the opportunity to design systems that handle secure financial transactions. Collaborative environment . We value diversity, transparency, and teamwork. You'll join an open and supportive culture where everyone's input matters. What you bring along 5+ years of professional experience in backend engineering with Java Spring Boot. Master's degree in Computer Science, Mathematics, or Physics. Expertise in Spring Boot and strong knowledge of modern frameworks, SDKs, API standards, and libraries. Solid experience with unit, integration, and performance testing (JUnit, Spock, Testcontainers). Strong understanding of building secure, reliable, and scalable systems, ideally in a regulated or financial services context. Proactive, ambitious, and collaborative mindset with a track record of delivering high-quality solutions. Fluency in English. Nice to have: familiarity with React and experience in building financial products. Why us 🌱 Opportunity to work in a company with direct social impact 💰 Attractive compensation 🇺🇦 Open & International environment 🏛️ Fantastic location in the heart of Berlin & flexible WFH policy 🥘 Free lunch at the office 💻 Latest equipment, to ensure you have everything needed Kadmos is on an ambitious mission to revolutionise salary payments to migrant workers. The Berlin-based startup was founded in 2021 by MIT graduates Justus Schmueser and Sasha Makarovych to bring fintech, low margins, and transparent FX to industries riddled with opaque mark-ups, kickbacks, and physical cash transactions. Backed by renowned VCs Addition and Atlantic Labs, Kadmos has raised more than $39 million since 2021. The company intends to use the funding for expanding across industries and further accelerating product development. For more information, visit https://www.kadmos.io/

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