Java Backend Developer – Spring Boot, Camunda

• Work on client projects for large companies and public-sector organizations, embedded within their teams
• Design, develop, and test Java-based microservices
• Develop synchronous and asynchronous REST and SOAP APIs using OpenAPI 3
• Automate processes with Camunda BPM
• Automate testing with JUnit 5 and Cucumber
• Operate your own services, including deployment, monitoring, and troubleshooting
• Help shape software architectures
• Generate, review, and refactor code using Claude Code, Copilot, or Cursor
• Coordinate with cross-functional stakeholders across team boundaries
• Participate in scheduled on-call rotations for developed services
• Attend occasional on-site client meetings every few weeks

• Senior-level experience; able to work independently and deliver from day one
• Java and Spring Boot, along with Spring Data and Hibernate/JPA
• Design, development, and testing of microservices
• REST and SOAP web services (JSON/XML over HTTP), OpenAPI 3
• PostgreSQL and Oracle
• JUnit 5 and Cucumber
• Docker and Kubernetes
• CI/CD with GitLab Pipelines; Maven for builds
• Git, Jira, Confluence, and agile methodologies
• Hands-on Camunda BPM experience from real-world projects
• OAuth 2.0 and Keycloak for authentication and authorization
• German at native level or C1/C2 proficiency
• Fluent English
• Productive use of Claude Code, Copilot, or Cursor (AI tools are required)
• Willingness to participate in scheduled on-call rotations
• Nice to have, but not required: Apache Kafka and asynchronous communication; XML, XSD, XSLT; experience working on complex projects involving multiple teams; legacy J2EE systems and migration to Spring Boot

• Work from home, from the office, or a combination—you decide
• MacBook (unless the client provides its own hardware)
• A variety of clients and projects
• The founders are your direct points of contact
• Internal upskilling in AI development