**MANTECH** seeks a motivated, career-oriented Senior Program Security Officer to join our team in **Chantilly, VA.** In this role, you will provide comprehensive program, physical, and personnel security support across a range of secure facility activities. You will play a vital part in ensuring that security operations align with customer requirements and national policy. **Responsibilities include but are not limited to:** + Provide security support and perform a variety of security-related tasks for Collateral and SCI Sensitive Compartmented Information Facility (SCIF) activities + Execute clearance nomination submissions, clearance maintenance, indoctrinations, and education, in including customer badge processing + Monitor Visitor Control, Access Control, and Document Control processes + Manage incident tracking, adverse information reporting, and foreign travel/contact reporting + Maintain and track accreditations and Authority to Operate (ATO) status, while supporting government inspections + Perform additional security tasks as required by customer security personnel + Support proposals and the implementation of government security policies **Minimum Qualifications:** + 5+ years of relevant security experience supporting SCIF operations + Demonstrated experience performing a variety of security-related tasks within secure environments + Familiarity and operational experience with DISS and Scattered Castles + Knowledge of NISPOM and other applicable security regulations + Proficiency in using standard office software and security-related databases **Preferred Qualifications:** + FSO Certification + Experience supporting proposal development in secure environments + Familiarity with ICD 705 and physical security construction standards **Clearance Requirements:** + Must have a current/active TS/SCI with CI Polygraph **Physical Requirements:** + Must be able to remain in a stationary position 50% of the time + Needs to frequently move about inside the facility to access resources and escort visitors + Constantly operates a computer and other office productivity machinery ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.