Information Systems Security Officer

General information

Requisition #

R71847

Locations

USA-MD-Annapolis Junction

Posting Date

11/03/2026

Security Clearance Required

TS/SCI w/ Poly

Remote Type

Onsite

Time Type

Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!

MANTECH seeks an experienced and passionate, career and customer-oriented Information Systems Security Officer (ISSO) to join our team supporting in Annapolis Junction, MD.

The Information Systems Security Officer (ISSO) will leverage their strong technical background and cybersecurity expertise to establish, maintain, and enforce robust operational security posture and system authorization compliance across complex customer environments.

Responsibilities include but are not limited to:

• Support organization, system, or enclave Information Assurance (IA) programs to safeguard critical infrastructure.
• Propose, coordinate, implement, and enforce security policies, standards, and methodologies across all assigned systems.
• Establish and maintain operational security posture and day-to-day security operations.
• Provide configuration management (CM) for security software, hardware, and firmware while managing system changes and assessing security impacts.
• Prepare, review, and maintain System Security Plans (SSPs), Risk Assessment Reports, Security Assessment & Authorization (C&A/A&A) packages, and Security Requirements Traceability Matrices (SRTMs).
• Support security authorization activities in strict compliance with Government standards and the Risk Management Framework (RMF).

Minimum Qualifications:

• Bachelor's degree in Computer Science or related discipline from an accredited college or university with 10+ years of experience as an ISSO (or 14 years of total ISSO experience in lieu of a degree).
• DoD 8570 compliance with Information Assurance Management (IAM) Level 1 or higher certification.
• Demonstrated experience in at least two (2) of the following areas: current security tools/hardware/software security implementation, communication prototypes, or encryption techniques/tools.
• Hands-on experience preparing and reviewing System Security Plans (SSPs), risk assessments, and authorization documentation.

Preferred Qualifications:

• Experience deploying and configuring security scanning tools in support of continuous monitoring processes.
• Experience managing configuration management tickets, firewall implementations, SSP changes, and Account Management.
• Experience designing and implementing Plans of Action and Milestones (POA&M) to remediate vulnerability and risk findings.
• Experience reviewing, preparing, and updating ATO packages in accordance with NIST Risk Management Framework (RMF) and customer policies.

Clearance Requirements:

• Must have a current/active TS/SCI with Polygraph.

Physical Requirements:

• Must be able to remain in a stationary position for extended periods of time.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations, and must be able to exchange accurate information in these situations.

The projected compensation range for this position is $128,000.00-$214,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.