Miguel Eduardo Molina Chaparro contributed to backend development and DevOps workflows across the hmcts/civil-citizen-ui and hmcts/civil-commons repositories. He implemented an end-to-end preview deployment system by configuring Jenkinsfile and Helm values, enabling pre-merge validation of feature branches and reducing merge risk. Using Java and YAML, he restored deployment stability by rolling back to a master baseline and updating service image tags. In civil-commons, Miguel enhanced localization by adding Welsh language support for court venue data and introduced targeted error suppression to improve user experience. His work demonstrated depth in CI/CD, configuration management, and maintainable Java backend solutions.