Backend Software Developer – Java Application Containerization

Utimaco is an international provider of IT security solutions and cybersecurity technologies, with headquarters in Aachen (Germany) and Campbell (USA). For over 40 years, we have been developing innovative solutions to protect people, data, and communications that meet the highest standards. We are a global leader in hardware security modules and compliance solutions across various industries such as automotive, banking, telecommunications, and many more.With our global network of partners and customers, we contribute to making digital information and infrastructures secure worldwide. Together, we are shaping the future of IT security. We’re looking for a Senior Backend Software Developer to lead the migration of a large-scale Java-based monolithic application (WAR on Tomcat) into a modern, containerized environment running on Kubernetes or OpenShift. This role is ideal for a hands-on developer who understands how to refactor traditional Java applications to run efficiently and securely inside containers — while maintaining performance, reliability, and network communication integrity.,

• Analyze an existing monolithic Java/Tomcat application and define the migration strategy toward containerized deployment
• Refactor code, configurations, and dependencies to make the application container-ready and cloud-native compliant (stateless design, environment variables, configuration management)
• Optimize the application for scalability and resilience in OpenShift or Kubernetes environments
• Design and implement inter-process communication mechanisms (including socket-based integrations) in the new architecture
• Collaborate with DevOps engineers to integrate application containers with CI/CD pipelines and deployment automation
• Ensure logging, monitoring, and security best practices are embedded in the migrated application
  
  

• 5+ years of experience in backend development using Java
• Strong understanding of Tomcat and traditional Java EE or Spring-based architectures
• Proven experience migrating applications to containers (Docker, Kubernetes, or OpenShift), as well as Linux, MySQL and troubleshooting distributed applications
• Deep knowledge of networking concepts and experience working with sockets and low-level communication
• Familiarity with microservices principles, REST APIs, and inter-service communication
• Knowledge in Java build tool (Maven/Gradle)
  
  

• An open and friendly corporate culture characterized by constructive and collaborative interaction
• We provide you with support for your future plans with a company pension scheme (depending on country-specific circumstances)
• Early risers and night owls - thanks to a flexible working model you can organise your working day yourself
• We also support you privately â benefit from special payments or additional vacation days on anniversaries or other special occasions
• Utimaco is growing and living diversity! Our global team includes colleagues from 42 nationalities and 45 different languages spoken