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Senior Information System Security Officer; ISSO

Job in Chantilly, Fairfax County, Virginia, 22021, USA
Listing for: Cyber Defense Technologies
Full Time position
Listed on 2025-12-22
Job specializations:
  • IT/Tech
    Cybersecurity, IT Consultant, Information Security
Job Description & How to Apply Below
Position: Senior Information System Security Officer (ISSO)
Overview
: CDT is looking to add a Senior Information Systems Security Officer to provide advice and assistance to secure configuration and operations to the customer’s IT assets. Apply extensive knowledge and experience of a variety of information system security concepts, practices, and procedures. This will be onsite in Chantilly, VA.

Clearance
:

An active Top Secret/SCI clearance with CI Poly is required. Candidates who do not meet these clearance requirements will not be considered.

Qualifications:
  • Master’s Degree and 5 years work experience, Bachelor’s Degree and 8 years of work experience or equivalent;
    Associates Degree and 12 years of work experience or equivalent
Desired

Qualifications:

  • Thorough understanding and application of network security principles, practices, and implementations.
  • Working knowledge of cross-functional integration of information systems into a physical security environment.
  • Working knowledge of system functions, security policies, technical security safeguards, and operational security measures.
  • Understanding of system methodologies including but not limited to client server, web hosting, web content servers, policy servers, directory servers, firewalls, WAN, LAN, switches, and routers.
  • Familiarity with detecting and preventing computer security compromises in a networked environment.
  • Working knowledge of configuration management; system maintenance; and integration testing.
  • Proficient in the use of tools used to prevent and/or negate malicious code.
  • Understanding of COTS tools that scan at the physical layer of all removable and fixed media types including but not limited to: (CDs, hard drives, thumb drives, Zip/Jazz, etc.).
  • Ability to decipher and explain in clear language Intelligence Community Directive (ICD) 503.
  • Ability to support forensics and evidentiary preservation.
  • Ability to troubleshoot technical configurations and make recommendations on the protection of classified and sensitive data.
  • Demonstrated ability to translate technical information and information technology jargon into plain English.
  • Ability to apply a risk management philosophy when faced with security challenges and the ability to articulate the pro’s and con’s in a clear concise manner.
  • Demonstrated proficiency with the following computer operating systems (e.g. Microsoft Windows, LINUX, UNIX, Mac OS, etc.).
  • Analytical ability to decipher complex technical configuration management documents.
  • Demonstrated proficiency with database maintenance.
  • Strong ability to elicit, articulate, and document information in a well-organized manner.
  • Demonstrated ability to work independent of close supervision.
  • Demonstrated experience with Microsoft Office Suite.
  • Working knowledge of all applicable IC, DoD policies, procedures and operating instructions related to Information Technology, Information Assurance, Information Management (IT/IA/IM).
  • Excellent communication, interpersonal, and team-building skills to engender rapport with the military personnel, civilians, and other contractors at all levels.
  • An ability to prioritize work to meet deadlines, and to manage the workflow of the ISSO team.
  • Demonstrated ability to correlate audit results between various systems and/or users and notify the ISSM of any discrepancies.
  • Expertise with configuration management; system maintenance; and integration testing.
  • Ability to troubleshoot technical configurations and make recommendations on the protection of classified and sensitive data.
  • Expert in the use of tools used to prevent and or negate malicious code.
  • Expert in detecting and preventing computer security compromises in a networked environment.
  • Expertise in forensics chain of custody and evidentiary preservation.
  • Demonstrated proficiency in successfully guiding complex information systems through assessment and authorization control gates.
  • Analytical abilities to decipher complex technical configuration management documents.
  • Proficient in maintaining databases.
  • Thorough working knowledge of all applicable IC, DoD policies, procedures and operating instructions related to Information Technology, Information Assurance, Information Management (IT/IA/IM).
  • Demonstrated ability to work independent of close supervision.
  • Expert ability to establish and maintain effective internal and external working relationships with government and contractor program managers, security professionals, and mission partners.
CDT is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class.

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Position Requirements
10+ Years work experience
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