General information
Requisition #
R69245
Locations
USA-WV-Fairmont
Posting Date
07/14/2026
Security Clearance Required
Top Secret
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 a motivated, career and customer-oriented Senior Information System Security Officer (ISSO) to join our team in Fairmont, WV.
In this critical full-time role, you will be responsible for the overall cybersecurity posture of a large-scale government enterprise. As a senior member of the team, you will serve as the principal advisor on all matters related to information systems security and compliance, ensuring that a government cybersecurity center maintains authorization to operate (ATO) and maintains a strong security posture against evolving threats.
Responsibilities include but are not limited to:
Lead the preparation of documentation and coordination with government and technical staff for annual A&A's performed by government assessors.
Lead the development, maintenance, and oversight of system security plans (SSPs) and other RMF documentation required for system accreditation and authorization to operate (ATO).
Conduct continuous monitoring and internal audits to ensure compliance with government security standards and policies.
Advise and assist system administrators and engineers in the implementation and management of security controls.
Oversee the vulnerability management program, ensuring security patches and vulnerability mitigations are implemented in a timely manner.
Collaborate with the Cybersecurity Operations Center (CSOC) and other security teams during incident response efforts, providing expertise on system security and controls.
Develop and update security policies, procedures, and training materials to promote a culture of security awareness.
Minimum Qualifications:
5+ years of experience as an ISSO or in a similar cybersecurity role, with a strong background in government or DoD environments.
In-depth knowledge of Windows and Linux operating systems, networking, and common cybersecurity tools.
Continuous monitoring and internal auditing experience.
Preferred Qualifications:
Professional certifications such as CISSP, CISM, or Security+ are preferred.
Extensive experience with the NIST Risk Management Framework (RMF) and other security control standards preferred.
Clearance Requirements:
Physical Requirements:
The projected compensation range for this position is $99,500.00-$165,900.00. 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.