MANTECH

Information System Security Officer

MANTECH, San Antonio

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Mantech seeks a motivated, career driven, and customer-focused Information System Security Officer (ISSO) to join our team in Columbia, MD .
You will play a critical role in supporting enterprise infrastructure capabilities for a global, mission-focused workforce. As an ISSO, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services. You will manage cybersecurity documentation, assess system vulnerabilities, and support the Risk Management Framework (RMF) lifecycle in alignment with Sponsor policies.
Responsibilities Include, But Are Not Limited To

Update and maintain hardware and software inventory records, including associated change logs
Support and coordinate Secure the Enterprise (STE) and Secure the Network (STN) activities
Review and address Xacta notices and ensure compliance documentation is accurate and current
Complete SEAR audit log records in accordance with Sponsor standards
Track, review, and resolve POAMs (Plan of Action and Milestones) related to IAVA/IAVAx findings
Develop and maintain System Security Plans (SSPs) for both new and existing systems
Analyze vulnerability scan results and collaborate with system owners to implement remediation
Leverage sponsor tools such as Gatekeeper, Xacta, SEAR, and LatteArt in daily operations

Minimum Qualifications

Bachelor’s degree with 12+ years of relevant experience OR associate’s degree with 15 years of relevant experience OR high school diploma/GED with 20 years of relevant experience
Experience with Xacta, LatteArt and other sponsor tools
Experience managing POAMs, performing audit log reviews, and maintaining secure system inventories
IAM I certification (DoD 8140 required upon start of employment. Acceptable certifications include CAP/CND/Cloud+/GSLC/Security + CE/HCISSP/CASP+CE/CISM/CISSP/ or CCISO)

Preferred Qualifications

Knowledge of STE and STN processes and coordination
Experience with Gatekeeper, SEAR, SCANBOY
Experience with the Service Now (SNOW) platform

Clearance Requirements

Must possess and maintain a current/active TS/SCI clearance with Polygraph

Physical Requirements

Must be able to remain in a stationary position 50% of the time
Occasionally moves about inside the office to access file cabinets, office machinery, etc.
Frequently communicates with co-workers, management, and customers, including delivering presentations. Must be able to exchange accurate information in these situations

Seniority level

Seniority level
Not Applicable

Employment type

Employment type
Full-time

Job function

Job function
Information Technology
Industries
IT Services and IT Consulting

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