Worked on modernizing the build system for the solrbot/apache-_-solr repository, focusing on upgrading the toolchain to Gradle 9.6.0 and aligning dependencies to reduce version conflicts. The approach involved extensive Gradle 9 API migrations, updating build scripts with new ExecOperations injection patterns, and ensuring Groovy 4 compatibility. By synchronizing Netty dependencies and removing incompatible plugins, the work improved build reliability and maintainability. The changes established a robust foundation for future upgrades, leveraging skills in Build Engineering, DevOps, and Groovy. No bugs were fixed during this period, with efforts concentrated on feature development and infrastructure modernization.