During his recent work, Diego enhanced the grafana/plugin-ci-workflows repository by enabling secure CI support for private Go modules, implementing a GitHub App token flow and configuring Git to authenticate module downloads. This approach allowed reliable builds with private dependencies, reducing build failures and laying the foundation for broader private-repo workflows. Later, in the grafana/grafana repository, Diego added PostgreSQL JSON and JSONB data type support using the PGX driver, resolving data mapping issues and expanding integration tests to ensure accurate handling of complex data. His work demonstrated depth in backend development, CI/CD automation, and proficiency with Go, Bash, and PostgreSQL.