Development of API-first solutions in PHP (Laminas/Mezzio) according to PSR-15/PSR-7 and Domain-Driven Design (DDD) principles, Setup and operation of scalable data flows between ERP (Microsoft Business Central), web, and third-party systems, Co-design of our software architecture, interfaces, and data models, Step-by-step modernization of existing components and integration of new services into our system landscape, Implementation of new features in Vue + TypeScript using Atomic Design, State Manager Pattern, and documentation via Storybook, Close collaboration with the design team to seamlessly integrate user interfaces and APIs, Support with UI optimizations and in the interplay of frontend and API, Implementation of architectural specifications, coding standards, code reviews, unit and integration tests, Focus on maintainability, security, stability, and clean documentation, Active participation in technical decisions within the team, Continuous delivery via GitLab CI/CD with a fixed branching strategy, Containerization via Docker and deployment on multiple stages, Continuous improvement of build pipelines, monitoring, and automation, Use of PhpStorm + JuniePro AI and other modern AI tools for code support, test automation, and refactoring, Experimentation with new AI-based approaches to make development processes more efficient, intelligent, and future-proof, Contribution to a learning-oriented, innovation-friendly team culture that promotes openness to new technologies, Participation in Daily Talks and weekly update meetings with ERP and IT teams, Active knowledge exchange through internal formats like Herolé Academy and external conferences (e.g., PHPDD), Open feedback culture and space for own ideas and experiments