Java Backend Developer – Spring Boot, Camunda

🔥 0 minutes ago

🇩🇪 Germany – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 25%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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RockstarDevelopers GmbH

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2013

💼 Consulting

📣 Marketing

📦 Logistics

Consulting • Marketing • Logistics

RockstarDevelopers GmbH is a German software engineering and consulting firm that builds enterprise‑grade web, AI and Web3 solutions for large B2B clients. They provide end‑to‑end services including frontend, full‑stack and mobile development, AI application development (OpenAI Enterprise, LangChain, vector DBs), Web3 projects, and technical consulting around architecture, microservices, migrations and process optimization. The company focuses on digital transformation and modernization for enterprise customers, partnering with well‑known brands to deliver scalable, production‑ready systems and strategic digital roadmaps.

📋 Description

• Work on customer projects for large enterprises and public-sector clients, embedded within their teams • Take full ownership of your area of responsibility • Design, develop, and test Java microservices • Develop synchronous and asynchronous REST and SOAP APIs using OpenAPI 3 • Automate processes with Camunda BPM • Automate testing with JUnit 5 and Cucumber • Deploy, monitor, and troubleshoot your own services • Help shape the architecture • Generate, review, and refactor code using Claude Code, Copilot, or Cursor • Coordinate with cross-functional stakeholders across team boundaries • Support the services you develop in production, including participation in a shared scheduled on-call rotation

🎯 Requirements

• Senior-level experience; able to deliver from day one and work independently • Experience with Java, Spring Boot, Spring Data, and Hibernate/JPA • Experience designing, developing, and testing microservices • Experience with REST and SOAP web services, JSON/XML over HTTP, and OpenAPI 3 • Experience with PostgreSQL and Oracle • Experience with JUnit 5 and Cucumber • Experience with Docker and Kubernetes • Experience with CI/CD using GitLab Pipelines and Maven • Experience with Git, Jira, Confluence, and agile ways of working • Hands-on project experience with Camunda BPM • Experience with OAuth 2.0 and Keycloak for authentication and authorization • Apache Kafka and asynchronous communication are a plus • XML, XSD, and XSLT are a plus • Experience working on complex projects involving multiple teams is a plus • Experience with legacy J2EE systems and migrating them to Spring Boot is a plus • German at native or C1/C2 level • Fluent English • Ability to coordinate daily with business departments and cross-functional stakeholders • Productive use of Claude Code, Copilot, or Cursor is required • Willingness to participate in a scheduled on-call rotation

🏖️ Benefits

• Permanent employment contract • 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