Thimios Dimopulos contributed backend reliability improvements to the archivesspace/archivesspace repository, focusing on CI/CD workflows and data publishing logic. He refined the GitHub Actions pipeline by adjusting Docker image builds to trigger only on push events, which improved tag reliability and streamlined build feedback. In the OAI-PMH publishing system, Thimios enhanced data integrity by introducing logic to exclude unpublished collections from API responses, using Ruby and YAML to implement has_unpublished_ancestor checks and regression tests. His work addressed two bugs, demonstrating depth in API development, backend engineering, and automated testing, and resulted in more predictable deployments and accurate data exposure controls.