Worked on the apache/ranger repository to enhance the reliability of service update operations by addressing validation and error handling gaps in the backend. Focused on stabilizing the service update flow, the work consolidated validation logic to prevent ID mismatches by ensuring the service ID in the payload matched the request URI. Leveraging Java and REST API development skills, the developer introduced targeted tests for blank service names and ID mismatches, strengthening the updateServiceDef path. These changes improved error handling and reduced operational risk, demonstrating a methodical approach to backend development and unit testing while prioritizing maintainability and robust API governance.