Information Systems Security Officer (ISSO)

Clearance Level
Top Secret SCI + Polygraph
Information Security
Washington, District of Columbia
Reston, Virginia

REQ#: RQ90470

Travel Required: None
Requisition Type: Regular

This position is not yet funded

Principal Duties and Responsibilities:

  • Senior level or subject matter expert (SME) information system security professional who provides advice and assistance to the Government regarding secure configuration and operation of Agency IT assets
  • Conducts research, develops, implements, test, and reviews an applications information security IAW DoD/NIST RMF requirements in order to protect information and prevent unauthorized access
  • Direct the team on security measures, explain potential threats, implement security measures, and monitor applications in order to meet or exceed all DoD/NIST RMF requirements, resulting in faster and more accurate software releases
  • Work on large-scale and adhoc projects, supporting enterprise-level activities
  • Develop and manage the POA&M tracker and Risk-Based Decisions (RBDs)/ Waivers for deficiencies
  • Perform self-assessments of NIST SP 800-53 Rev4 controls and document test results
  • Ensure security-related concerns and incidents are reported to ISSMs and managed timely
  • Evaluate system’s risk in respect to operation at the network, system, and at application level
  • Provide guidance in developing, reviewing, and maintaining SSPs, Scan Results, and test result artifacts
  • Support the creation or modification of FISMA compliancy documentation such as Contingency Plans, Incident Response Plan and Access Control Plans

Required Skills / Experience:

  • BS in related field + 8 years’ experience or 13 YOE
  • Experience with DoD 8510 and NIST 800-53 Risk Management Framework
  • Ability to analyze and to troubleshoot and prioritize needs, requirements and other issues
  • Excellent communication, teamwork, leadership and conflict management skills
  • Experience working in an enterprise environment supporting on-premise applications and enterprise service for cloud extension/ deployment
  • ATO
  • Use of DevOps/Continuous integration environment
  • Experience using and navigating tools to manage Assessment & Authorization (A&A) process
  • Proficiency in performing risk-based reviews of Security Authorization Package

Required Certification(s):

  • IAT II and IAM II (CISSP preferred)

Security Clearance:

  • TS/SCI required with CI Polygraph


  • ITIL V3 or ITIL V4 Foundation
We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.