RG
Fullstack Entwickler Java / Angular (m/w/d) – Mid-Level
Contract type
Ongoing
Work mode
Hybrid · Mannheim, Germany · Stuttgart, Germany · München, Germany · Frankfurt am Main, Germany
Experience
Mid-level · 3+ years
Job description
Fullstack developer working in customer projects for large enterprises and public-sector clients, building features with Java/Spring Boot and Angular.
At a glance
- Employment
- Full-time · Employee (employment agreement)
- Work mode
- Hybrid · Mannheim, Germany · Stuttgart, Germany · München, Germany · Frankfurt am Main, Germany
- Languages
- German
What you'll do
- Fullstack development with Java/Spring Boot and Angular
- Implement, test and ship features independently
- Generate, review and refactor code with Claude Code, Copilot or Cursor
- Give and receive code reviews
- Coordinate with Product Owners, UX and DevOps
What we're looking for
- At least three years of professional experience as a developer after training or studies
- Java (17+) and Spring Boot
- Angular with TypeScript
- REST interfaces and relational databases, especially PostgreSQL
- Tests with JUnit as part of the definition of done
- Git, CI/CD, agile working
- Must be able to work productively with AI tools like Claude Code, Copilot, Cursor
- Confident on both frontend and backend and able to pick up new stacks quickly
Nice to have
- LLM integration in applications (RAG, tool calling, agents), also from a side project
- Docker and Kubernetes, Kafka
- Kotlin, Camunda (BPMN process automation), Keycloak/OAuth 2.0
- AWS or Azure, JPA/Hibernate
- Frontend tests (Jest, Playwright, Cypress), accessibility (BITV 2.0 / WCAG AA)
Benefits
- Home office, office or a mix, you decide
- MacBook (unless the client provides its own hardware)
- Various clients, various projects
- The founders are your direct contacts
- Internal upskilling in AI development
How to get hired
- 1CV is enough, no cover letter needed
- 2Short video question round (2×90 seconds), then feedback within a few days
Apply
About Rockstardevelopers GmbH
Software developer with experience from hundreds of individual projects for enterprise and mid-sized clients
Founded in 2015 in Mannheim, with further offices in Stuttgart and Munich; builds custom software for enterprise and mid-sized clients.
Key facts
- 2015
- Mannheim, Germany
- Further offices in Stuttgart and Munich
- Short paths, honest feedback, no political games
- No hierarchy levels between you and the decision-makers
Partners & customers
Deutsche BahnDB Systel
What they value
- Short paths, honest feedback, no political games
- No hierarchy levels between you and the people making decisions