Java Backend Developer – Spring Boot, Camunda

🔥 13 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 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

🎯 Requirements

• 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

🏖️ Benefits

• 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