cFocus Software seeks a Information System Security Officer (ISSO) to join our program supporting the United States Air Force (USAF). This position is on-site in Linthicum Heights, MD. This position requires an Active TS/SCI clearance. Qualifications: • Active TS/SCI clearance • B.S. Computer Science, Information Technology, or a related field • Experience performing ISSO duties and developing or maintaining RMF authorization packages. • Experience preparing SSPs, assessment documentation, control evidence, and POA&Ms in eMASS. • Knowledge of security control assessment, continuous monitoring, STIG compliance, and vulnerability management. • Ability to evaluate security findings, coordinate remediation, and maintain accurate system risk records. • Understanding of authorization boundaries, configuration control, and security impacts of system changes. • Ability to work with system owners, ISSMs, engineers, assessors, and Government stakeholders. • Strong technical writing, evidence management, and communication skills for reviews and reporting Duties: • Develop, maintain, and update Authorization to Operate (ATO) and Assess-Only Authorization packages for assigned DC3 systems. • Execute steady-state RMF activities for systems with valid authorizations, including ongoing security control assessments, STIG compliance, and remediation tracking. • Prepare initial System Security Plans (SSPs), support execution of Security Assessment Plans, and assemble authorization evidence for systems lacking an ATO. • Maintain complete, current system records in the Enterprise Mission Assurance Support Service (eMASS); resolve documentation and evidence gaps with technical teams. • Maintain system-level Plans of Action and Milestones (POA&Ms), track corrective actions and dependencies, and provide updates for enterprise consolidation by the ISSM. • Review vulnerability assessment and configuration compliance results; coordinate remediation, validate closure evidence, and identify overdue or unresolved findings. • Support continuous ATO (cATO) through automated compliance evidence and monitoring data in coordination with DevSecOps and operations personnel. • Assess assigned system changes for security and authorization impacts; maintain consistent boundaries, configurations, inventories, and supporting records. • Track applicable cyber orders, taskers, and directives; coordinate required system changes and prepare compliance documentation or POA&Ms when immediate compliance is not achievable. • Provide the ISSM with system risk information, remediation options, and supporting evidence for enterprise risk analysis and Government risk acceptance decisions. • Coordinate with system owners, assessors, engineers, and the ISSM to prepare packages for Government review and address review findings before planned deployment. • Support incident response by providing system security documentation, assessing control implications, and tracking directed corrective actions. • Maintain security procedures and assessment records; support audits and provide status briefings, compliance evidence, and technical documentation as assigned.