Nickerson Talent Solutions · 10 hours ago
Information System Security Manager (ISSM)
Columbus, MS
Full-time
Onsite
Senior Level, Lead/Staff
$110K/yr - $125K/yr
8+ years expNickerson Talent Solutions is seeking an Information System Security Manager (ISSM) to serve as the primary authority for information system security across enterprise and program-level systems. The role involves developing security policies, overseeing compliance and audits, managing incident response, and providing leadership and mentorship to cybersecurity staff.
Staffing & Recruiting
No H1B
Security Clearance RequiredU.S. Citizen OnlyHiring Manager
Sepideh Majdedin
Responsibilities
Serve as the primary authority for information system security across enterprise and program-level systems
Develop, implement, and maintain system security policies, procedures, and standards in alignment with NIST SP 800-53, RMF, DoDI 8510.01, and applicable contract requirements
Oversee Authority to Operate (ATO) processes, including preparation, submission, and maintenance of RMF packages
Ensure continuous monitoring, risk assessment, and remediation of security vulnerabilities
Manage systems supporting DoD and federal programs
Coordinate security activities with IT Administration, Security Contractors, system owners, and program managers
Review system designs, architectures, and changes to ensure security requirements are met throughout the system lifecycle
Approve security-relevant changes and assess impact to system accreditation
Lead internal and external security audits, inspections, and assessments (e.g., DSS/DSCA, customer, internal)
Ensure compliance with DFARS 252.204-7012, CMMC (current level as applicable), and other contractual cybersecurity requirements
Track and report Plan of Action & Milestones (POA&M) and risk posture to leadership and government stakeholders
Oversee cybersecurity incident response activities, including investigation, reporting, and corrective actions
Conduct risk assessments and recommend mitigation strategies to reduce cyber risk
Ensure timely vulnerability management, patching, and configuration compliance
Provide mentorship and guidance to IT administrators and cybersecurity staff
Partner with IT administrators, engineering, and network teams to implement secure solutions that support business and mission objectives
Brief executive leadership on security posture and risk
Qualification
Required
Bachelor's degree in Information Security, Computer Science, Information Systems, or related field (or equivalent experience)
8+ years of experience in information security, with at least 3–5 years in an ISSM or senior cybersecurity leadership role
Hands-on experience with RMF, NIST SP 800-53, and DoD accreditation processes
Strong understanding of Windows systems, networks, and enterprise IT security controls
Excellent written and verbal communication skills, including experience interfacing with government customers
Preferred
CISSP, CISM, or similar DoD 8570/8140-compliant certification
Experience in a prime, defense contractor environment
Familiarity with CMMC implementation and assessments
Experience managing cybersecurity for multiple concurrent programs
Master's degree in a related discipline
Company
Nickerson Talent Solutions
We are a premier provider of staffing solutions for businesses across a wide range of industries.
11-50 employees
Funding
Current Stage
Early StageLeadership Team
Stephanie Nickerson McDermott
GC and CFO
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