Senior Information System Security Representative

General information

Requisition # R61687 Locations USA-DC-Washington Posting Date 07/10/2025 Security Clearance Required Top Secret Remote Type Onsite Time Type Full time

Description & Requirements

Transform the future of federal services with ManTech! Join a vibrant, energetic team committed to enhancing national security and public services through innovative tech. Since 1968, we’ve partnered with Federal Civilian sectors to deliver impactful solutions. Engage in exciting projects in Digital Transformation, Cybersecurity, IT, Data Analytics and more. Ignite your career and drive change. Your journey starts now—innovate and excel with ManTech!

MANTECH seeks a motivated, career and customer-oriented Senior Information System Security Representative (ISSR) to join our team in Washington, DC.

Responsibilities include but are not limited to:

• Provides overall configuration management infrastructure and environment to the product development team.  Developing or modifying CM plans, policies, and procedures tailored to the complexity and scope of the developmental or operational system
• Ensure that FBI ISs are operated, maintained, and disposed of in accordance with the internal security policies and practices outlined in the approved Security Assessment and Authorization (SAA) package.  Manage the SAA process for new FBI ISs and legacy FBI ISs migrating into the GRC application
• Provide baseline security controls to the system owner, contingent upon the IS’s security categorization, type of information processed and entity type.  Provide a recommendation to the Authorizing Official, in consultation with the system owner, regarding systems’ impact levels and ISs’ authorization boundary
• Initiate, coordinate, and recommend to the FBI Authorizing Official all Interconnection Security Agreement (ISAs), Memorandum of Understanding (MOUs), and Memorandum of Agreement (MOAs) that permit the interconnection of an FBI IS with any non-FBI or joint-use IS
• Perform an independent review of the System Security Plan (SSP) and make approval decisions.  Request and negotiate the level of testing required for an IS with the Enterprise Information Security Section and the FBI Authorizing Official.
• Coordinate IS security inspections, tests, and reviews with the Security and system owner. Submit the final SAA package to the FBI Authorizing Official for a security ATO decision. Supporting developmental and operational systems, creating and maintaining configuration baselines. Performing change control and configuration audits
• Ensure that the Security ATO Electronic Communication (EC) is serialized into Sentinel under the applicable case file number.  Advise the FBI Authorizing Official of IS vulnerabilities and residual risks.

Minimum Qualifications:

• At least 7 years of experience serving as an ISSR or in a similar role at a cleared facility
• 9 years’ experience in a computer science or cybersecurity related field.  If you hold a degree in a relevant field of study, it can be substituted for additional experience. Associates and 8 years.  Bachelor’s and 6 years.  Master’s and 3 years.
• Hold one of the following certifications: Certified Information Systems Security Professional (CISSP), Global Information Security Professional (GISP), or the CompTIA Advanced Security Practitioner (CASP) or other certifications exemplifying skill sets such as those described in DoD Instruction 8570.1. IAM Level III proficiency.
• Experience 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 applications

Preferred Qualifications:

• Bachelor's or advanced degree in Computer Science, Cybersecurity, or other cyber discipline is

Clearance Requirements:

• Must a current/active Top Secret security clearance with eligibility to obtain SCI.
• Applicants will be required to undergo a CI 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 printer.
• Often positions self to maintain computers in the lab, including under the desks and in the server closet.
• Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

The projected compensation range for this position is $138,700.00-$231,400.00. 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 International Corporation 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.