Position Purpose: The Senior Infrastructure Security Engineer is responsible for operating and maturing Centene’s Attack Surface Management (ASM) and Breach Attack Simulation (BAS) programs across hybrid, cloud, on-premises, and enterprise environments. This role strengthens security visibility and risk reduction by validating internet-facing assets, confirming ownership, assessing security coverage, maintaining inventory accuracy, coordinating remediation activities, executing breach attack simulation exercises, validating control effectiveness, and producing actionable reporting. The position partners across security, infrastructure, cloud, application, risk, compliance, and business teams to improve accountability, reduce exposure, validate defensive controls, and support effective security program operations.