
Job Overview
Location
Berlin, UK, Remote
Job Type
Full-time
Category
Backend Engineer
Date Posted
May 6, 2026
Full Job Description
đź“‹ Description
- • Kadmos GmbH is seeking a highly skilled Senior Backend Developer to join their team in Berlin, UK, or remotely. This pivotal role is central to the company's mission of revolutionizing salary payments for migrant workers, particularly within the shipping industry. As a regulated salary payment provider, Kadmos is dedicated to building secure, reliable, and scalable financial solutions that empower seafarers and shipping companies globally. The Senior Backend Developer will be instrumental in shaping the core infrastructure of the Kadmos platform, driving innovation, and ensuring the integrity of financial transactions in a strictly regulated environment. This is an opportunity to take significant ownership of critical backend engineering activities and contribute directly to a product with a profound social impact, making financial services more accessible and transparent for a vital global workforce.
- • In this role, you will be entrusted with the comprehensive ownership of the backend systems. Your day-to-day responsibilities will encompass the development and meticulous maintenance of core backend services, ensuring their robustness and efficiency. A key aspect of your work will involve building reusable libraries and implementing complex financial components that form the backbone of Kadmos's offerings. You will also be responsible for seamlessly integrating with various external service providers, ensuring smooth data flow and operational continuity. A significant part of your contribution will be in designing and developing systems that can handle secure financial transactions at scale, adhering to the highest standards of security and reliability. You will be expected to work with a high degree of independence, taking full accountability for your assigned tasks and projects. This autonomy will be balanced with close collaboration with product managers to align technical solutions with business objectives, compliance officers to ensure adherence to regulatory requirements, and fellow engineering teams to foster a cohesive development environment. Your proactive approach will be crucial in identifying and addressing potential challenges, optimizing system performance, and contributing to the overall technical strategy of the company. You will also be involved in the continuous improvement of our development processes and tooling, ensuring that Kadmos remains at the forefront of technological advancement in the fintech space.
- • You will become an integral part of the Kadmos engineering team, a group dedicated to building cutting-edge financial technology. The company fosters a collaborative and transparent environment where diversity is celebrated, and every team member's input is valued. You will join a supportive culture that encourages open communication and teamwork, enabling you to thrive both professionally and personally. Kadmos is a Berlin-based startup founded in 2021 by MIT graduates, driven by an ambitious mission to bring fintech innovation, low margins, and transparent foreign exchange to industries historically plagued by opaque mark-ups, kickbacks, and reliance on physical cash. The company has garnered significant backing from renowned VCs, including Addition and Atlantic Labs, having raised over $39 million since its inception. This funding fuels Kadmos's expansion across industries and accelerates product development, positioning it as a leader in its field.
- • This role offers a unique opportunity for professional growth and development. You will gain invaluable experience in building and scaling financial products within a highly regulated industry, deepening your expertise in secure and reliable system design. You will have the chance to learn from and collaborate with a talented team of engineers, product managers, and compliance experts, further honing your technical and problem-solving skills. By taking ownership of critical backend systems, you will directly contribute to the success of a company making a tangible social impact, improving the lives of migrant workers worldwide. The experience gained in navigating the complexities of fintech regulations and building robust financial infrastructure will be highly transferable and valuable for your future career trajectory. You will also have the opportunity to influence the technical direction of the company and mentor junior engineers, solidifying your leadership capabilities.
Skills & Technologies
About Kadmos GmbH
Kadmos GmbH is a Berlin-based fintech that delivers secure salary-payment infrastructure for migrant and temporary workers. Its platform integrates with employers, banks, and mobile wallets to remit wages in real time, cutting transfer fees and giving workers immediate access to earnings. The system supports multiple currencies and complies with European AML and PSD2 standards, providing APIs for payroll providers and staffing agencies.
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