This is a hands-on, high-autonomy role for an engineer who can design and build multi-petabyte, low-latency tracing infrastructure end-to-end - and who is equally excited to help define where Observability AI goes next: using traces, logs, and metrics as the substrate for automated root-cause analysis, anomaly detection, and AI-driven incident triage. To own the technical vision and architecture for distributed tracing as a first-class pillar of Workday's Observability Platform, built on ClickHouse and/or Grafana Tempo, backed by a big-data pipeline (Kafka, Spark/Flink, Iceberg, Clickhouse, Tempo,S3) running on AWS.