Fullstack Developer (m/f/d)

A company is looking for an experienced Fullstack Developer to further develop and functionally expand an existing corporate customer portal. The goal is to bring previously separate customer segments onto a shared portal and system platform, integrate existing business logic and interfaces, and replace a legacy application with modern web features. The role includes translating business requirements into clean, maintainable code, complete with tests and technical documentation. You will work in a small, agile development team alongside Product Owners and Scrum Masters, taking on tasks such as monitoring, testing, and bug fixing.

• Further development and functional enhancement of a corporate customer portal (web application)

• Technical merging of customer segments onto a shared platform

• Integration and adaptation of existing business logic and interfaces (API-based)

• Migration and replacement of a legacy application with web functionality

• Implementation of requirements into maintainable code, including tests and documentation

• Collaboration in an agile development team (Scrum or Kanban)

• Monitoring, testing, and bug fixing of production applications

• Experience in UX/UI design (Vue / TypeScript)

• Knowledge of Java (microservice experience) and Spring Boot

• Experience with databases (e.g., PostgreSQL or CloudSQL)

• Working with Docker and version control (Git, Bitbucket)

• Know-how in Google Cloud

• Practical experience with AI-assisted development (e.g., Claude Code, Prompt Engineering)

• Familiarity with modern software architecture and agile practices (e.g., pair/mob programming)

• Sense of responsibility for code and solutions

• Team player with experience in programming and testing in a professional environment

• Knowledge of Spring Boot–based backend systems, including REST APIs and Kafka communication (advantage)