Senior Backend Engineer (Berlin)

Kadmos; Berlin; Hybrid; EUR 60.000 - 80.000; Vollzeit

Zusammenfassung

A fintech startup in Berlin is seeking a Senior Backend Developer to own backend engineering activities. This role involves developing and maintaining core backend systems, building reusable libraries, and integrating with external services. The ideal candidate has over 5 years of experience with Java Spring Boot, a strong understanding of secure and scalable systems, and a master's degree in a relevant field. Attractive perks include free lunch and a flexible work-from-home policy.

Leistungen

Free lunch at the office

Flexible work-from-home policy

Latest equipment

Qualifikationen

• 5+ years of professional experience in backend engineering with Java Spring Boot.
• Solid experience with unit, integration, and performance testing (JUnit, Spock, Testcontainers).
• Strong understanding of building secure, reliable, and scalable systems.

Aufgaben

• Develop and maintain core backend systems.
• Build reusable libraries and implement complex financial components.
• Integrate with external service providers.

Kenntnisse

Java

Spring Boot

Unit testing

Integration testing

Performance testing

Fluency in English

Collaborative mindset

Ausbildung

Master's degree in Computer Science, Mathematics, or Physics

Jobbeschreibung

We are looking for aSenior Backend Developerwho 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
• 🏛️ Fantastic location in the heart of Berlin & flexible WFH policy
• 🥘 Free lunch at the office
• 💻 Latest equipment, to ensure you have everything needed

About the company

Kadmos is on an ambitious mission to revolutionisesalary 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/