Information Systems Security Officer

ManTech

Laurel, MD Posted 9/3/2025 Full Time

ManTech is seeking a motivated, career-driven, and customer-focused Information System Security Officer (ISSO) to join our team in Laurel, MD. You will play a critical role in supporting enterprise infrastructure capabilities for a global, mission-focused workforce. This position supports the high-visibility Enterprise Infrastructure Services (EIS) organization, responsible for the delivery and security of MPO’s Enterprise Information Technology (EIT)the foundation for enterprise-wide services. 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:

  • Leads medium to large complex projects and major phases of very large projects.
  • Provides highly technical and specialized guidance and solutions to complex IT problems.
  • Assist with preparation and maintenance of documentation
  • Propose, coordinate, implement, and enforce information systems security policies, standards, and methodologies.
  • Assist with the CM for information system security software, hardware, and firmware.
  • Maintain optional security posture for an information system or program.
  • 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
  • Support the initial authorization and reauthorization processes for system(s)
  • Manage and control changes to the system and assessing the security impact of those changes.

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
JOB LOCATION:
Laurel, MD 20724

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