Senior Backend Engineer (Berlin)

<div class="content-intro"><div class="layout__FormFieldContainer-sc-1wgrxjv-0 fhJjya post_details__Field-sc-ier52u-0 hVDruQ" data-provides="description_introduction"> <div class="components__JobPostDescription-sc-1qa03o2-13 bjOjov"> <h3>About the opportunity</h3> </div> </div></div><p><strong>About the opportunity</strong></p> <p>We are looking for a&nbsp;<strong>Senior Backend Developer</strong>&nbsp;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.</p> <h3>What you can expect</h3> <ul> <li><strong>Own the backend.</strong> You will be responsible for developing and maintaining core backend systems, building reusable libraries, implementing complex financial components, and integrating with external service providers.</li> <li><strong>Work with independence</strong>. You’ll be trusted to take full ownership of your responsibilities, while collaborating closely with product, compliance, and engineering teams.</li> <li><strong>Impact at scale</strong>. You will contribute directly to a platform serving the global shipping industry, with the opportunity to design systems that handle secure financial transactions.</li> <li><strong>Collaborative environment</strong>. We value diversity, transparency, and teamwork. You’ll join an open and supportive culture where everyone’s input matters.</li> </ul> <h3>What you bring along</h3> <ul> <li><strong>5+ years of professional experience</strong> in backend engineering with <strong>Java</strong> Spring Boot.</li> <li>Master's degree in Computer Science, Mathematics, or Physics.</li> <li>Expertise in <strong>Spring Boot</strong> and strong knowledge of modern frameworks, SDKs, API standards, and libraries.</li> <li>Solid experience with <strong>unit, integration, and performance testing</strong> (JUnit, Spock, Testcontainers).</li> <li>Strong understanding of building secure, reliable, and scalable systems, ideally in a regulated or financial services context.</li> <li>Proactive, ambitious, and collaborative mindset with a track record of delivering high-quality solutions.</li> <li>Fluency in English.</li> <li>Nice to have: familiarity with <strong>React</strong> and experience in building financial products.</li> </ul> <h3>Why us</h3> <ul> <li>🌱 Opportunity to work in a company with direct social impact</li> <li>💰 Attractive compensation</li> <li>🇺🇦 Open &amp; International environment</li> <li>🏛️ Fantastic location in the heart of Berlin &amp; flexible WFH policy</li> <li>🥘 Free lunch at the office</li> <li>💻 Latest equipment, to ensure you have everything needed</li> </ul> <p></p><div class="content-conclusion"><h3>About the company</h3> <p><em>Kadmos is on an ambitious mission to revolutionise&nbsp;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.</em></p> <p><em>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 <a href="https://www.kadmos.io/">https://www.kadmos.io/</a></em></p></div>