Information Systems Security Officer

ManTech is seeking a motivated, career-driven, and customer-focused Information System Security Officer (ISSO) to join our team in Laurel, MD . You will play a critical role in supporting enterprise infrastructure capabilities for a global, mission-focused workforce. This position supports the high-visibility Enterprise Infrastructure Services (EIS) organization, responsible for the delivery and security of MPO’s Enterprise Information Technology (EIT)—the foundation for enterprise-wide services. As an ISSO, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services. You will manage cybersecurity documentation, assess system vulnerabilities, and support the Risk Management Framework (RMF) lifecycle in alignment with Sponsor policies.

Responsibilities include, but are not limited to :

• Leads medium to large complex projects and major phases of very large projects.
• Provides highly technical and specialized guidance and solutions to complex IT problems.
• Assist with preparation and maintenance of documentation
• Propose, coordinate, implement, and enforce information systems security policies, standards, and methodologies.
• Assist with the CM for information system security software, hardware, and firmware.
• Maintain optional security posture for an information system or program.
• Develop and maintain System Security Plans (SSPs) for both new and existing systems
• Analyze vulnerability scan results and collaborate with system owners to implement remediation
• Support the initial authorization and reauthorization processes for system(s)
• Manage and control changes to the system and assessing the security impact of those changes.

Minimum Qualifications :

Preferred Qualifications :

Clearance Requirements :

Physical Requirements :