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Who we are Rockstardevelopers, founded in Mannheim in 2015, additional offices in Stuttgart and Munich. We are a software developer with experience from hundreds of individual projects for enterprise and medium-sized customers. Short channels, honest feedback, no political games.
No hierarchy levels between you and the people making decisions. Your tasks You will work on customer projects for large companies and public clients, embedded in their teams, with full responsibility for your area. Full stack development in enterprise and regulated environments Help shape architecture, not just implement it Generate, review and refactor code with Claude Code, Copilot or Cursor Code reviews and technical mentoring in the team Coordination with product owners, UX and DevOps Most people come to one of the offices one or two days a week.
But it's not a compulsion. You will only be on site with the customer for individual appointments every few weeks. Where you end up Depending on the project and your experience: Large corporations such as Deutsche Bahn / DB Systel (railway-specific domains: timetable management, sales, control and safety technology) Public sector / authorities (e.g.
Federal Employment Agency, ITZBund, Federal Printing Office) - regulated environments, accessibility, security by design Enterprise and medium-sized customers from a wide range of industries Experience in one of these environments is a strong plus - tell us where you come from in the questions. What you bring senior level. Our customers need people who deliver and work independently from day one.
Backend core (that's what we expect): Java (17+) and Spring Boot (alternatively strong in .NET, Kotlin or Python) REST interfaces, relational databases (PostgreSQL, MariaDB, Oracle or similar) Docker and Kubernetes CI/CD (Jenkins, GitHub Actions), Git, agile work Frontend (one sure, both a plus): React / Next.js or Angular, each with TypeScript Cloud: AWS or Azure Advantageous (not a must): Apache Kafka / asynchronous communication, microservices, domain driven design, JPA / Hibernate monitoring (Grafana, Prometheus), object storage (S3), tests (JUnit, Jest, Playwright, Cypress) Accessibility (BITV 2.0 / WCAG AA), DevSecOps / Security by Design (public sector) You don't have to be able to do everything. It is important that you are confident on both sides and can quickly find your way into new stacks. AI tools are mandatory, not a bonus Claude Code, Copilot, Cursor: You have to be able to work productively with them.
Not because we want to be hip, but because our customers expect it and that's how we work. If you think AI tools are hype and prefer to type everything yourself: wrong company. Internally, we invest in your AI skills.
What we offer Home office, office or mix, you decide MacBook (unless the customer provides their own hardware) Different customers, different projects The founders are your direct contacts Internal upskilling in AI development Application CV is enough. No cover letter necessary. After a short video question round (2x90 seconds), we will get back to you within a few days.
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