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Information System Security Officer with Security Clearance

MANTECHChantilly, VA🇺🇸United StatesPosted 13 Aug 2026

Quick Overview

Work Type
On Site
Schedule
Employee
Level
Mid Senior

Job Description

MANTECH is seeking a motivated, career and customer-oriented Information System Security Officer (ISSO) to join our team in Chantilly, VA. Responsibilities include but are not limited to:

  • Ensures network nodes are operated, maintained, and disposed of in accordance with security policies and practices.
  • Perform Information System Security Officer (ISSO) duties in support of in-house and external customers. Also, perform duties as the alternate Information Systems Security Manager (ISSM).
  • Cyber security paperwork (compliance) and Information Assurance (IA) controls.
  • Develop supporting documentation and apply standards, directives, guidance, policies, and security control to classified computing environments in support of Intelligence Community Directive (ICD) 503
  • Utilizing one or more Risk Management Framework implementation methods to include but not limited to; JSIG, CNSSI 1253, NIST SP 800-53, NIST SP 800-171, DoDM-5220-22 (NISPOM)
  • Assist in preparation and review documentation to include System Security Plans (SSPs), Risk Assessment Reports (RAR), Security Controls Traceability Matrix (SCTM), and other Assessment & Authorization (A&A) artifacts
  • Learn and conduct independent scans of the application, network, and database with tools such as Nessus, DISA STIGS compliance check and SCAP (SCC) Minimum Qualifications:
  • Bachelor's Degree and at least 5 years of experience in Cybersecurity, Information Technology, Computer Science, or other relevant technical field; Experience can be any combination professional experience, internships, lab work or coursework. An additional 2 years of experience may be substituted in lieu of degree.
  • At least three years' experience with Risk Management Framework, JSIG, or similar security frameworks.
  • Department of Defense (DoD) 8570/8140 Compliant, IAT Level III within 6 months of hire date
  • Strong Analytical and Critical Thinking Skills, Interpersonal and People Skills, Leadership Skills, Listening Skills, Multi-Tasking Ability, Communication Skills, Organizational Skills, Presentation Skills Preferred Qualifications:
  • A bility to obtain and maintain customer system accreditations through the System Development Life Cycle (SDLC)
  • Experience providing continuous monitoring, security reviews, and technical inspections to enforce security policies, controls and procedures and mitigate identified vulnerability and weaknesses
  • Ability to work well in a team environment and work well under pressure.

Security Clearance Requirements:

  • Must have a current / active Top-Secret/SCI clearance with the ability to obtain and maintain a polygraph
  • Eligibility for access to Special Access Program information (SAP) Physical Requirements:
  • Must be able to remain in a stationary position up to 75% of the time
  • Must be able to move about inside the office to access file cabinets, office machinery
  • Must be able to position self to maintain office supplies on variable height shelving.
  • The person in this position frequently communicates with co-workers, management and customers, which may involve delivering presentations.
  • Must be able to exchange accurate information in these situations

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