Jaskaran Sarkaria contributed to several GOV.UK repositories, focusing on backend development, build automation, and deployment reliability. In the alphagov/release repository, Jaskaran improved deployment tracking by ensuring the UI accurately displays deployed SHAs and enhanced database integrity by refining migration and test code using Ruby and SQL. For alphagov/govuk-infrastructure, Jaskaran simplified Terraform configuration by removing redundant defaults, streamlining maintenance. In alphagov/govuk-developer-docs, Jaskaran added checks to support Mermaid diagram rendering, improving documentation reliability. Additionally, Jaskaran addressed a runtime error in commit matching logic, adding regression tests to reinforce nil-safety and robust error handling, demonstrating careful attention to stability.