Java Backend Developer – Spring Boot, Camunda

RockstarDevelopers GmbH

Senior Java-Backend-Entwicklung für Rockstardevelopers, einen deutschen Softwareentwickler für Enterprise- und Mittelstandsprojekte. Entwicklung und Betrieb von Microservices mit Spring Boot, Camunda, REST/SOAP und Kubernetes.

Posted 8/9/2026full-timeRemote • 🇩🇪 GermanyMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in designing, developing, and testing Java-based microservices, with a strong focus on REST and SOAP APIs, process automation using Camunda BPM, and CI/CD practices. Proficient in coordinating with stakeholders and integration partners while utilizing AI tools for code generation and refactoring.

Highest-signal resume keywords

Java DevelopmentSpring BootMicroservices ArchitectureREST and SOAP APIsCamunda BPM

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

JavaSpring BootMicroservicesREST APIsSOAP APIsJUnit 5CucumberPostgreSQLOracleOAuth 2.0

Soft Skills

Independent WorkCoordinationCommunication

Tools & Technologies

DockerKubernetesGitLab PipelinesMavenGitJiraConfluence

Industry Keywords

Agile MethodologiesProcess AutomationAI ToolsIntegration PartnersOn-Call Support

Tech Stack

Tools & technologies

ApacheDockerHibernateJ2EEJavaJUnitKafkaKubernetesMavenMicroservicesOraclePostgresSOAPSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Work on client projects for large companies and public-sector clients, embedded in their teams and taking full responsibility for your area
Design, develop, and test Java-based microservices
Develop synchronous and asynchronous REST and SOAP APIs and specify them with OpenAPI 3
Implement process automation using Camunda BPM
Automate tests with JUnit 5 and Cucumber
Deploy your services, monitor them, and analyze issues
Contribute to the architecture
Generate, review, and refactor code using AI tools such as Claude Code, Copilot, or Cursor
Coordinate with integration partners across team boundaries
Partially support developed services in production, including scheduled on-call rotations

Requirements

What you’ll need

Senior level; deliver from day one and work independently
Java and Spring Boot, including Spring Data and Hibernate/JPA
Designing, developing, and testing microservices
REST and SOAP web services with JSON/XML over HTTP and OpenAPI 3
PostgreSQL and Oracle
JUnit 5 and Cucumber
Docker and Kubernetes
CI/CD with GitLab Pipelines and builds with Maven
Git, Jira, Confluence, and agile working
Camunda BPM experience from real projects
OAuth 2.0 and Keycloak for authentication and authorization
German at native level or C1/C2 proficiency
Fluent in English
Daily coordination with business stakeholders and integration partners
Productive use of Claude Code, Copilot, or Cursor; AI tools are mandatory
Advantageous but not required: Apache Kafka and asynchronous communication
Advantageous but not required: XML, XSD, XSLT
Advantageous but not required: experience in complex projects with multiple teams involved
Advantageous but not required: legacy J2EE systems and their migration to Spring Boot

Benefits

Comp & perks

Home office, office, or hybrid—your choice
MacBook provided (unless the client supplies their own hardware)
Varied clients and projects
The founders are your direct contacts
Internal upskilling in AI development
Scheduled on-call duty is organized and shared within the team