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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
  

• 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)
  

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

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

• 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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