Programming and Development Skills
•    Solid knowledge of modern programming languages, especially Kotlin, Java, JavaScript/TypeScript
•    Development of backend and app applications with Spring Boot and Kotlin
•    Experience in app development on Android with Kotlin & Jetpack Compose
•    Experience in hybrid app development with Ionic on Android & iOS

Software Engineering Best Practices
•    In-depth understanding of software architecture principles
•    Confident use of design patterns and the avoidance of anti-patterns
•    Applied principles of clean code and clean architecture
•    Code documentation both inline and in external systems (e.g., Confluence)

Interfaces and Subsystems
•    Design and implementation of clearly structured, maintainable interfaces (REST, RPC, possibly GraphQL)
•    Responsible for entire subsystems (e.g., authentication including social login)
•    Experience with API design, versioning, and interface testing

Domain Understanding
•    High interest and deep Understanding of the respective technical domain
•    Ability to understand business processes and implement them in software solutions
•    Infrastructure knowledge:
•    Understanding of deployment mechanisms, logging, monitoring, and performance tuning
•    Very good knowledge of Google Cloud

Quality assurance and reviews
•    Conducting code reviews, especially for complex tasks
•    Focus on maintainability, testability, and code comprehensibility
•    Supporting refactoring measures and technical development

Tools & methods
•    IDE & tools: IntelliJ IDEA, Git, Maven
•    Documentation & collaboration: Confluence, JIRA
•    Processes & methods: Scrum, Kanban, CI/CD
•    Test frameworks: JUnit, MockK, test containers
•    DevOps/Build: Experience with pipelines, Docker, and possibly Kubernetes (advantageous)

•    Development and maintenance of features and subsystems (e.g. Authentication system)
•    Ensuring quality through code reviews and technical documentation
•    Contributing to the design of architecture and technical roadmaps
•    Supporting the selection of suitable technologies and tools