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MANTECH seeks a motivated, career-oriented, and customer-focused **Program Security Officer 3 (PSO 3)** to join our team in **Chantilly, VA** .

In this role, you will assist the Senior Program Security Director by providing high-level security support for a dynamic, multi-disciplined organization. You’ll engage with mission partners, contribute to policy development, and help safeguard vital national security interests.

Responsibilities include, but are not limited to:

+ Engage with the organization’s Policy and Security offices on data and technology sharing requests from both foreign and domestic mission partners

+ Assist the Program front office and serve as the policy and governance lead for developing future classification guidance to be integrated into programs

+ Interface with senior-level mission partners across the DoD, Intelligence Community (IC), and foreign entities

+ Draft policy documentation in compliance with NRO standards

+ Address security issues across multiple domains—including physical, personnel, operational, technical, information, industrial, and information system security

+ Provide security assistance and guidance to defense contractors across all industrial security disciplines

+ Domestic and OCONUS travel up to 25% may be required

Minimum Qualifications:

+ HS Diploma and 12 or more years relevant security experience or Associates and 10 or more years relevant security experience or Bachelor’s Degree and 8 or more years relevant security experience or Masters and 6 years relevant security experience

+ Proficiency in program protection (P2), risk management, and classification policy, as well as in the planning and execution of program security

+ Experience with Controlled Access Programs (CAPs) and Special Access Programs (SAPs)

+ Proven ability to deliver risk-managed security recommendations that support secure and successful mission execution

+ Demonstrated skill in analyzing and managing complex, high-level security data independently and reviewing peer recommendations

+ Ability to deliver clear, effective briefings and presentations to senior audiences, including high-level decision-makers

+ Working knowledge and implementation experience with Intelligence Community Directives

Preferred Qualifications:

+ Demonstrated success in building strong working relationships with Government Agencies and mission partners

+ Experience writing and templating policy documents

+ Strong verbal communication skills in both one-on-one and group settings

+ Comfortable working with and briefing senior government personnel

+ Ability to thrive in fast-paced environments where priorities frequently change

+ Experience identifying and evaluating multiple sources to support classification decisions

Clearance Requirements:

+ Must possess an active **TS/SCI with Polygraph**

Physical Requirements:

+ Must be able to remain in a stationary position 50% of the time

+ 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

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 [email protected] and provide your name and contact information.