Fullstack Application Developer | COS_2026_01 Fullstack‑Anwendungsentwickler (w/m/d)

Job Summary

As a Fullstack Application Developer within the 'Direct Systems' internal development unit at CosmosDirekt, you will be responsible for creating tailored, user-friendly service applications. Your daily work involves developing backends using Java 17+ and Spring Boot 3, alongside frontends utilizing React or similar modern frameworks like Angular or Vue. You will take ownership of the entire development lifecycle, from designing secure REST APIs to implementing automated testing with JUnit and Cypress. A key part of this role involves maintaining CI/CD pipelines and deploying containerized applications via Docker and Kubernetes. What makes this position unique is the opportunity to work at Germany's leading online insurer, where you can integrate cutting-edge AI technologies and Large Language Models (LLMs) into production environments. You will thrive in an agile Scrum/Kanban environment that prioritizes continuous improvement, knowledge transfer, and professional growth through structured mentoring and certifications.