Information Systems Security Manager (ISSM)

Modern Technology Solutions, Inc. (MTSI) is seeking a Information Systems Security Manager to lead RMF lifecycle activities from system categorization through ATO. Your essential job functions will include but may not be limited to: Develop and maintain authorization packages  Coordinate with SCA and AO representatives to resolve findings and adjudicate risk Prepare systems for ATO, IATT, and continuous authorization Ensure implementation and validation of security controls per JSIG/NIST 800-53. Track and remediate POA&Ms; enforce accountability for corrective actions. Conduct internal compliance assessments and inspection preparation Assess technical risk and provide written risk recommendations to government Cyber lead/Security Director. Ensure configuration management and baseline control integrity Provide cybersecurity briefings to senior leadership as required Maintain working relationships with external stakeholders. Required: 10+ years cybersecurity experience in DoD classified environments. (SAP/SCI) 3+ years experience as ISSM or equivalent senior cybersecurity lead Deep familiarity with: JSIG, RMF (DoDI 8510.01), ICD 503, NIST 800-53 DoD 8570/8140 IAT Level III or IAM Level II/III certification (e.g., CISSP preferred). Strong written and verbal communication skills with experience preparing presentation materials for leadership audiences. Experience working directly with Authorizing Officials and SCAs. Experience in multi-system portfolio management. Education Requirements: Bachelor's Degree in Cybersecurity, IT, Engineering, or related field (or equivalent experience). Clearance Requirements: Current/active Top Secret/SCI; Current or recent DoD SAP access Subject to a Counterintelligence (CI) polygraph #LI-LS1 #mtsi #lawrenciumsaskatchewantrout #LI-Onsite