Worked on the newrelic/entity-definitions repository, focusing on configuration management and entity definition using YAML. Delivered a new entity type for NGEP teams hierarchy levels, establishing a scalable model for hierarchical data with manual expiration and non-alertable settings to support governance and reporting needs. Addressed data integrity by correcting eventName mapping in golden_metrics.yml, ensuring metric queries accurately associate with entities and reducing the risk of misattributed metrics in dashboards and alerts. Prioritized release safety by implementing targeted configuration changes without altering the API surface, demonstrating attention to maintainability and precision in managing entity definitions and metric configurations.