Senior Full-Stack Engineer

🕒 October 27, 2025

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Kadmos

WebsiteLinkedInAll Job Openings

11 - 50 employees

💰 Series A on 2022-07

Kadmos powers an end-to-end salary payment platform that enables secure payments to international employees across the globe. Our mission is to bring fintech, low margins, and transparent FX to industries riddled with opaque mark-ups, kickbacks, and physical cash transactions. Founded by MIT alumni and a world-class fintech product team, we are changing the way that international employees spend and manage their salaries.

📋 Description

• Own the full stack. You will be responsible for developing and maintaining core backend systems and frontend applications, 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 and deliver exceptional user experiences. • Collaborative environment. We value diversity, transparency, and teamwork. You’ll join an open and supportive culture where everyone’s input matters.

🎯 Requirements

• 5+ years of professional experience in full-stack development with Java Spring Boot and React. • Master’s degree in Computer Science, Mathematics, or Physics. • Backend Proficiency: Expertise in Java with strong knowledge of Spring Boot and modern frameworks, SDKs, API standards, and libraries. • Frontend Proficiency: Expertise in React with a strong emphasis on TypeScript. Experience with Redux, React Query, styled-components, MUI Component Library, or similar tech stack. • Extensive hands-on experience in developing scalable and testable high-quality solutions in an agile environment. • Solid experience with unit, integration, and performance testing (JUnit, Spock, Testcontainers on the backend; React Testing Library and Cypress on the frontend). • 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.

🏖️ Benefits

• 🌱 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