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General information

Requisition #
R62987
Locations
USA-MD-Laurel
Posting Date
09/02/2025
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

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


The projected compensation range for this position is $175,800.00-$312,200.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories.  In addition, MANTECH invests in its employees beyond just compensation.  MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.