• Own reliability outcomes for operating Temporal Cloud end to end, partnering across engineering, infrastructure, and product to drive measurable improvements. • Define, implement, and evolve reliability targets and associated practices, including alerting thresholds, operational readiness criteria, and escalation paths. • Plan and run gamedays to validate incident response, operational procedures, and cross-team coordination under realistic failure scenarios. • Build and scale a chaos testing program that exercises failure modes safely and drives remediation work that reduces real risk. • Define and maintain a reliability scorecard across services and key operational processes, and use it to prioritize reliability investments. • Lead load testing and performance testing efforts, including test design, tooling, and analysis of bottlenecks and capacity constraints. • Improve observability standards (metrics, logs, traces, dashboards) so reliability signals are consistent, actionable, and easy to audit. • Drive post-incident learning and corrective actions, ensuring fixes are durable and reduce recurrence risk over time. • Make system-level tradeoffs across reliability, performance, cost, and velocity, and document decisions clearly for long-term maintainability. • Mentor other engineers and raise the bar on reliability engineering practices across teams.