Gabrielle Magruder enhanced backend reliability and observability across two major repositories. In Planning-Inspectorate/appeals-back-office, she developed and refactored API testing for the Start Appeal workflow, introducing deterministic unit tests and direct endpoint verification using Node.js, Jest, and Supertest to improve CI feedback and coverage. For hmcts/civil-general-apps-ccd-definition and hmcts/cnp-flux-config, Gabrielle stabilized telemetry instrumentation by correcting Azure Application Insights configuration and aligning secret management, ensuring accurate monitoring across environments. Her work demonstrated depth in configuration management, API development, and testing, addressing both infrastructure and application-level concerns to support robust, maintainable backend systems using JavaScript and YAML.