Senior Java/Kotlin Developer (German)

Senior Java/Kotlin Developer (German) | Banking

• Location: Remote Employment type: B2B Contract
• Industry: Banking
• Language: English (B2+) & German (B2/C1)

About the project

For our client from the banking sector, we are looking for an experienced Senior Java/Kotlin Developer to join a team responsible for developing and enhancing business-critical financial applications. You’ll work in an international environment, contributing to modern backend solutions that support digital banking services while collaborating closely with German-speaking stakeholders.

Your responsibilities

• Design, develop, and maintain backend applications using Java and Kotlin
• Build scalable, secure, and high-performance microservices
• Develop and integrate REST APIs with internal and external banking systems
• Collaborate with business analysts, architects, QA engineers, and DevOps teams
• Participate in technical design discussions and architectural decisions
• Optimize application performance, reliability, and security
• Write clean, maintainable, and well-tested code
• Support CI/CD processes and modern software delivery practices
• Must-have requirements5+ years of commercial experience in backend development
• Strong knowledge of Java and Kotlin
• Experience with Spring Boot and the Spring ecosystem
• Experience building RES
• Tful APIs and microservices
• Solid knowledge of SQL databases (PostgreSQL, Oracle, or similar)

Experience with Docker and Kubernetes

• Familiarity with Git and CI/CD pipelines
• Understanding of software design patterns and clean architecture
• Experience working in Agile (Scrum/Kanban)

German language skills at B2 level or higher

• English at B2 level or higherNice to have
• Experience in the banking or financial services industry
• Knowledge of Kafka or other messaging platforms
• Experience with cloud platforms (AWS, Azure, or GCP)

Familiarity with event-driven architecture

Knowledge of security standards used in financial systems