• Maintained and expanded the Java-based education platform (almanca.at); implemented JSP page optimization and modular development practices. • Optimized JSP-based views and refactored legacy code to improve site performance. • Managed MySQL database design and operations; worked on indexing, tuning, and data integrity. • Provided end-to-end server administration on IONOS; managed domain settings, deployments, and SSL configuration. • Used GitHub for version control; managed branching strategies and release management. • Built a full-stack web project for the official TELC German exam using Next.js + Java + MySQL.