Leidos is seeking a Contractor Special Security Officer (CSSO) to support several customers in Arlington, Virginia.

Position Summary:

The CSSO will oversee facility, personnel, and SAP security in support of Government security requirements and will be responsible for executing procedures and processes to provide physical protection for personnel and government property, as well as administering day to day security programs and risk mitigation activities. The CSSO will support and conduct internal security investigations in accordance with customer legal and policy requirements and will provide guidance and recommendations to customer leadership on personal and physical security matters, including security training, regulatory requirements, security policies and procedures, and emerging trends in physical and personal security.

The successful candidate will have expert knowledge of security practices, advanced techniques, and solutions, and will recommend and implement new security solutions, processes, policies, and standards in support of overall program security strategy and operations.

Duties may include but are not limited to:
• Ensure strict adherence to the provisions of the NISPOM, its Supplement, ICDs, and applicable DoD and SAP policies.
• Develop and execute policies and procedures for safeguarding Special Access Program (SAP), Sensitive Compartmented Information (SCI), and collateral information
• Hands-on experience in physical security assessments/inspections and Sensitive Compartmented Information Facility (SCIF)/Special Access Program Facility (SAPF) security requirements.
• Coordinate and communicate with customer executive leadership on security matters of significant importance to the organization and program.
• Provide day to day security support, including continuous assessment of security procedures to identify shortfalls and recommend improvements to security policies, procedures, and systems.
• Identify vulnerabilities, threats, and risks to test, training, and operational activities and recommend appropriate mitigation measures.
• Develop, implement, and deliver training for the Operations Security (OPSEC) program.
• Experience creating and conducting security briefings, debriefings, indoctrinations, pre/post foreign travel briefings and refresher briefings, as appropriate
• Ensure timely notification of pertinent security matters to customers and Leidos leadership, as required.

Basic Qualifications:
• Bachelor's degree and 5+ years of relevant security experience; additional related experience may be considered in lieu of a degree.
• Current industrial security certifications (e.g., FSO, CPSO, or CSSO mid-level training/certifications).
• Current Top Secret clearance with SCI eligibility; candidates who do not currently possess this level of clearance will not be considered
• Eligibility for access to Special Access Program (SAP) information
• Willingness to submit to and successfully complete a Counterintelligence (CI) polygraph
• Ability to work effectively in a dynamic environment and interact with a wide range of DoD, IC, civilian, and industry personnel
• Ability to work independently while also serving as an engaging, collaborative team player
• Proficiency with Microsoft Office (Word, PowerPoint, Excel) and Windows operating systems
• Extensive experience with classified and unclassified networks and facility clearance requirements.
• Demonstratable experience communicating information security and risk-related concepts effectively to both technical and non-technical audiences.
• Strong problem-solving and analytical skills and demonstrate poise and ability to act calmly and competently in high-pressure, high-stress situations.
• Attention to detail and a high level of accuracy are a must.
• Must be able to work in a constantly changing regulatory environment with short-, mid-, and long-term timelines for remediating any non-compliance.
• Must be highly organized with excellent oral and written communication skills.
• Must be able to proofread for accuracy, completeness, grammar, and format.

Other Requirements:
• Must be flexible and have the ability to work in a very dynamic environment and effectively interact with numerous DOD, IC, civilian personnel and industry partners
• Experience with DISS, JADE, SIMS and similar security systems and tools
• Experience with ICD 705 requirements
• Willingness to travel up to 25%

Original Posting:
May 29, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $65,650.00 - $118,675.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.