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Senior Counterintelligence Investigator Security Clearance

Job in Chantilly, Fairfax County, Virginia, 20151, USA
Listing for: MANTECH
Full Time position
Listed on 2026-01-15
Job specializations:
  • Government
    Government Security, Cybersecurity, Government Agency, Data Security
Job Description & How to Apply Below
Position: Senior Counterintelligence Investigator with Security Clearance
MANTECH seeks a motivated, career and customer-oriented Counterintelligence (CI) Investigator to join our team in Chantilly, VA. Responsibilities include but are not limited to:
* Conducting comprehensive counterintelligence inquiries according to legal status, IC and DoD policies and procedures.

* Identifying, evaluating, performing, and reporting on threats to agency equities using extensive knowledge of agency, IC and DoD policies and directives.

* Safeguarding all case files and writing detailed reports and referrals to appropriate government agencies.

* Providing investigative support for espionage damage assessments.

* Conducting CI assessments and referrals of personnel for IC indicators and for CI incidents as appropriate, to include FBI 811 referrals. These duties include a comprehensive review of personnel records to validate or invalidate assertion of CI indicators; assessing and documenting CI vulnerabilities associated with agency personnel; identifying CI concerns and possible mitigations within SEAD-4 National Security Adjudicative Guidelines; and conducing CI case support for federal investigative agencies.

* Managing and preparing detailed reports, based on existing investigative documentation, existing electronic databases of foreign intelligence contact information, and other CI inquiries and assessments.

* Routinely briefing and providing investigative leads to the GTM as necessary.

Minimum Qualifications:

* Bachelor's degree in foreign area studies, International Relations, security studies, History, Behavioral Science, Criminal Justice, Space Systems, or Political Science and 10+ years of relevant experience with Intelligence and/or Counterintelligence;
In lieu of a Bachelor's:
Associates' degree and 15+ years of relevant experience with Intelligence and/or Counterintelligence.

* Successful completion of a state or federal/military law enforcement academy or counterintelligence academy/formal training curriculum.

* Interviewing, elicitation, and/or interrogation experience per the applicable level stated in the table below.

* Completion of a formal state or federal training program in relevant field

* Experience interacting with agencies across the DoD and IC. Desired Qualifications
* Knowledge, familiarity, and/or training in adjudicative guidelines outlined in ICD 704. Clearance Requirements:
* Must have a current/active TS/SCI w/Polygraph.

Physical Requirements:

* Must be able to remain in a stationary position 50%

* Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

* Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.

* Must be able to exchange accurate information in these situations.
Position Requirements
10+ Years work experience
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