Worked on the DataDog/datadog-agent repository to address a host tagging issue in the Oracle.can_connect service check, focusing on improving monitoring accuracy for Oracle endpoints. Refactored the service check submission logic in Go to ensure the database hostname is consistently and correctly tagged, which reduces the risk of misattributed metrics and alerts. Enhanced test coverage by adding targeted tests that verify accurate tagging, helping to prevent future regressions. This work strengthened the reliability of host-level metrics and dashboards, aligning with system monitoring and maintenance goals while demonstrating proficiency in Go development, testing, and the principles of test-driven engineering.