In February 2026, Mingma developed a new observability metric for BigQuery jobs by adding TotalServicesSkuSlotMillis to QueryStatistics within the googleapis/google-cloud-go repository. This feature enables tracking of external service slot usage, supporting more accurate capacity planning and cost governance for large-scale data workloads. Mingma implemented the change using Go, leveraging Google Cloud Go client libraries and established instrumentation patterns to ensure the API surface remained backward-compatible. The work focused on backend development and API design, delivering a targeted solution for BigQuery diagnostics without introducing breaking changes or regressions, and demonstrated a thoughtful approach to extensibility and maintainability.