Information System Security Officer

General information

Requisition # R66529 Locations USA-MD-Fort Washington Posting Date 03/16/2026 Security Clearance Required TS/SCI Remote Type Onsite Time Type Full time

Description & Requirements

Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Information System Security Officer to join our team in Washington. 

Responsibilities include but are not limited to:

• Monitor information systems for threats, audit records, and ensure security controls are functioning
• Develop, maintain, and review authorization packages (System Security Plans - SSPs), and create Plans of Actions and Milestones (POA&Ms) for non-compliant items.
• Conduct vulnerability assessments, identify risks, and recommend mitigation strategies to the Information System Security Manager (ISSM) or Authorizing Official (AO)
• Support security investigations, incident handling, and reporting
• Establish, operate and maintain agnostic cloud environments (Commercial, GovCloud, SC2S and C2S) for EMSO programs, and targeted external programs 
• Provide information systems security and lead the accreditation (ATO) efforts for RAID environment 
• Lead the design, development and delivery of compliance and analytical software tools for Air Force Combatant Commands, OUSDI and PREM, and EMSO programs 

Minimum Qualifications:

• Must possess a CompTIA Security + and/or CASP + certification
• A minimum of three years’ experience in information assurance, risk management, or system administration; security monitoring assurance; risk management; compliance and documentation
• Experience with the National Institute of Standards and Technology (NIST) Risk Management Framework (RMF), firewalls, and intrusion detection systems, XACTA/eMass, and POA&M
• Expert knowledge of Unix/Linux operating systems, databases, web servers, networking technologies, Linux security, EndPoint security, and cloud security
• Experience with vulnerability/patch management (container scanning, DAST/SAST)

Preferred Qualifications:

• Strong knowledge and experience with RHEL command line
• Strong knowledge of Cloud computing environments such as AWS
• Experience leading Cybersecurity (ISSO & ISSE) teams

Clearance Requirements:

• Must be a US Citizen and possess an active TS/SCI clearance

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the t