Senior Security Adjudicator

One Federal Solution • Washington, DC

1d • Onsite

About The Position

One Federal Solution is seeking a Senior Security Adjudicator to join our team in Washington, DC. The Senior Security Adjudicator serves as a subject-matter expert responsible for adjudicating complex, high-risk, and sensitive national security cases, including appeals and exception-based determinations.

Requirements

• Deep expertise in federal adjudicative guidelines and security clearance processes.
• Bachelor's degree in Criminal Justice, Security Studies, Political Science, Psychology, or a related field
• Demonstrated experience with senior-level adjudications in government or cleared contractor environments.
• 5–10+ years of experience in personnel security, background investigations, or adjudication
• Strong independent judgment and ability to make risk-based national security decisions under ambiguity.
• Proven experience handling appeals, exceptions, and complex cases.
• Excellent written and analytical skills, particularly for decision documentation.

Responsibilities

• Adjudicate complex, high-risk, and sensitive security clearance cases, including appeals and special determinations.
• Apply whole-person adjudication principles to evaluate risk to national security.
• Perform quality assurance and consistency reviews of adjudication decisions.
• Provide mentorship and technical guidance to junior and mid-level adjudicators.
• Advise leadership on policy interpretation, adjudicative standards, and emerging threat or risk patterns.
• Produce clear, defensible written decisions suitable for audits, legal review, and IG investigations.
• Ensure adjudication outcomes align with federal regulations, executive orders, and agency-specific guidance.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior