SMX is seeking an experienced Information System Security Officer (ISSO) to support a mission-critical federal program. This individual will serve as a cybersecurity professional responsible for ensuring the security, compliance, and operational integrity of enterprise information systems supporting critical mission functions. The selected candidate will work closely with System Owners (SOs), Business Process Owners, Information System Security Managers (ISSMs), and cybersecurity leadership on matters involving information system security. This role requires solid experience implementing and maintaining security controls, supporting Risk Management Framework (RMF) activities, and leading Authorization to Operate (ATO) efforts across multiple systems and projects. The ISSO – Intermediate will be responsible for evaluating security posture, mitigating risk, recommending security improvements, and ensuring compliance with federal cybersecurity requirements. This position is hybrid and req...