Worked on the opencast-admin-interface and opencast/opencast repositories, focusing on backend and integration features that improved scheduling reliability and content discovery. Addressed recurring event scheduling issues by implementing UTC-based handling and refactoring RRULE generation, ensuring consistent event timing across time zones and enhancing data integrity for multi-region deployments. Delivered new LTI tool features, including sorting by Dublin Core metadata fields and search results by creation date, with API enhancements and updated documentation to support developers and integrators. Utilized TypeScript, Java, and HTML, applying skills in API development, event scheduling, and documentation to deliver maintainable, integration-friendly solutions.