Senior Security Control Assessor
Listed on 2026-10-05
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IT/Tech
Cybersecurity
- Location 1790 Ash Street Southeast,Washington, DC, 20032,United States
- Employee Type Regular Full-Time
- Required Degree 4 Year Degree
- Name Talent Acquistion
Tharros supports the Department of Homeland Security (DHS) with cybersecurity services across its Intelligence Enterprise.
In support of this mission, we have an immediate opportunity for a Senior Security Control Assessor
. In this role you will lead the most complex assessments in the portfolio, including Cross Domain Solutions (CDS), Special Access Program (SAP) systems, C-LAN extension sites, and cloud environments. You will guide junior assessors, improve A&A standard operating procedures, and help modernize the authorization process toward ongoing authorization and reciprocity. This position is on-site in a Government SCIF in Washington, DC.
- BS degree in Information Technology, Cybersecurity, Information Systems, or Computer Science OR minimum of 10 years' experience in IT or cybersecurity.
- Minimum of 7 years' experience in RMF security control assessment.
- Active TS/SCI clearance and U.S. citizenship; willingness to undergo a DHS counterintelligence-scope polygraph.
- Knowledge of ICD 503, CNSSI 1253, and the Risk Management Framework (RMF).
- Knowledge of Cross Domain Solution or SAP system assessment requirements.
- Knowledge of cloud security authorization concepts.
- Skill in using at least two security tools (e.g., Nessus/ACAS, SCAP, Web Inspect, Sonar Qube, STIG Viewer).
- Skill in developing and improving assessment procedures and SOPs.
- Ability to lead complex assessments and mentor junior staff.
- Proficient in Microsoft Office Suite to include Teams or similar workplace chat and videoconferencing tools.
- Excellent written and oral communications skills.
- Must have an active TS/ SCI
- Requires 7-10 years related experience.
- Must be able to assess the security controls employed within and inherited by an information system using assessment procedures specified in the security assessment plan.
- Must be able to provide specific recommendations on how to correct weaknesses or deficiencies in the controls and address identified vulnerabilities.
- Excellent written and verbal communication skills.
- Proficient in Microsoft Office Suite to include Teams or similar workplace chat and videoconferencing tools.
Tharros combines extensive cyber defense knowledge with the world’s preeminent vulnerability expertise to identify and defend against attacks before they become problems. Working at mission speed, we harden mission systems faster and secure them for longer, so agencies never lose the mission edge. Tharros lifts the veil of enterprise cybersecurity to detect zero days before they affect you, enabling mission maneuverability and the confidence to move missions forward.
In the ever-evolving realm of cyberspace, we are dedicated to becoming the paramount defender in the 5th war fighting domain. By pioneering innovative security solutions and fostering an environment of continuous learning and vigilance, we aim to protect the interests of our nation’s security. Our commitment to excellence in cybersecurity will establish new benchmarks, transforming the digital landscape into a secure and thriving frontier for future generations.
Tharros. See Everything. Secure Anything.
Tharros is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer and make employment decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected status.
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