In March 2025, Martin enhanced observability for the taskforcesh/bullmq repository by extending the exportPrometheusMetrics function to accept an optional globalVariables object, which is appended as labels to each job count metric. This backend development work, implemented in TypeScript, enables more granular filtering and analysis within Prometheus dashboards, directly supporting improved SLA monitoring and capacity planning. Martin followed a test-driven approach, adding a dedicated test to ensure global variables are correctly included in exported metrics. The focused scope and depth of this feature reflect a strong understanding of metrics export, Prometheus integration, and robust backend engineering practices.