Job Description:Design, deploy, administer, and optimize large-scale Apache Druid clusters supporting PB-scale datasets.Manage and troubleshoot Druid services.Perform cluster upgrades, patching, capacity planning, and platform modernization activities.Monitor cluster health, ingestion performance, query latency, segment distribution, and resource utilization.Troubleshoot ingestion failures, stuck tasks, compaction issues, retention policies, and segment management problems.Optimize Druid queries