Senior Information System Security Officer

General information Requisition #

R69397

Locations USA-AL-Huntsville Posting Date 07/21/2026 Security Clearance Required

TS/SCI

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 Huntsville, Alabama.Responsibilities include, but are not limited to:Ensure the day-to-day implementation, oversight, continuous monitoring, and maintenance of the security configuration, practices, and procedures for each IS and that selected security controls are implemented and operating as intended during all phases of the IS lifecycleProvide liaison support between the system owner and other IS security personnelEnsure that system security documentation is developed, maintained, reviewed, and updated on a continuous basis; Conduct required IS vulnerability scans according to risk assessment parametersManage the risks to ISs and other FBI assets by coordinating appropriate correction or mitigation actions and oversee and track the timely completion of (POAMs). Coordinate system owner concurrence for correction or mitigation actionsMonitor security controls for FBI ISs to maintain security Authorized to Operate (ATO); Upload all security control evidence to the Governance, Risk, and Compliance (GRC) application to support security control implementation during the monitoring phaseEnsure that changes to an FBI IS, its environment, and/or operational needs that may affect the authorization status are reported to the system owner and IS Security Manager (ISSM)Ensure the removal and retirement of ISs being decommissioned in coordination with the system owner, ISSM, and ISSR; Working knowledge of the National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) and ATO processesMinimum Qualifications:At least 7 years serving as an Information Systems Security Officer (ISSO) at a cleared facilityAT least 9 years’ experience in a computer science or Cybersecurity related fieldHold at least one of the following Information Assurance Management (IAM) Level III certifications: Certified Information Systems Security Professional (CISSP), Global Information Security Professional (GISP), Certified Information System Manager (CISM), or the CompTIA Advanced Security Practitioner (CASP) or equivalent certificationsFamiliarity with the use and operation of security tools including Tenable Nessus and/or Security Center, IBM Guardium, HP Weblnspect, Network Mapper (NMAP), and/or similar applicationsPreferred Qualifications: A bachelor's or advanced degree in Computer Science, Cybersecurity, or other cyber disciplineClearance Requirements: Must have an active Top Secret clearance and be willing and able to obtain SCI eligibility prior to start.Selected candidate must be willing to undergo a Polygraph.Physical Requirements:Must be able to remain in a stationary position 50%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 printerOften positions self to maintain computers in the lab, including under the desks and in the server closetFrequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.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 View email address on click.appcast.io and provide your name and contact information.