SMX is seeking a highly motivated **Information System Security Officer (ISSO) – Mid** to support a mission-critical federal program in Washington, DC. This individual will serve as a key cybersecurity resource responsible for supporting the security posture, compliance activities, and operational security requirements of enterprise information systems and applications. The selected candidate will act as a trusted advisor to System Owners (SOs), Business Process Owners, Information System Security Managers (ISSMs), and cybersecurity leadership on matters related to information system security, risk management, and regulatory compliance. This role requires experience supporting Risk Management Framework (RMF) activities, implementing security controls, monitoring system security posture, and ensuring information systems remain compliant with federal cybersecurity requirements while supporting mission objectives. This position is on site in Washington, DC and requires an active **TS/S...