Backend & Integration Java Developer m/w/d

We are looking for a Backend & Integration Java Developer to maintain and evolve a core enterprise application. You will work in a diverse environment, managing integrations with other systems and contributing to the modernization of the platform.

Main Responsibilities

• Maintain, debug, and improve existing backend services built mainly with Java (1.7/1.8), Spring Boot and some legacy components (EJB, Swing).
• Contribute to building and monitoring reliable integrations using tools such as WebMethods, IBM MQ and SFTP file transfers.
• Design and consume REST and Web APIs to connect different functional domains.
• Work with Oracle 19c databases on Unix environments, focusing on queries and data-related performance.
• Take part in the gradual modernization of the platform, including moving legacy parts towards microservices and containerized environments.
• Use AI-assisted development tools (e.g. GitHub Copilot, ChatGPT/Claude) in your daily work to speed up coding and debugging, while keeping a strong focus on code quality and security.
• Collaborate with Business Analysts, internal teams and external hosting partners (e.g. DXC) to align on technical specifications and releases.