The Work We are seeking a Senior Cybersecurity Engineer with deep experience supporting the Risk Management Framework (RMF) and Authorization to Operate (ATO) lifecycle for federal information systems. This role focuses on STIG compliance, vulnerability management, POA&M tracking, and incident response for high-impact systems operating in classified environments. Key Responsibilities Provide end-to-end RMF and ATO support, including development, maintenance, and submission of security authoriza