Information System Security Representative (ISSR) – Sr

Company: CGI
Location: Washington
Posted on: April 2, 2026

Job Description:

U.S. - CGI Federal roles - What we do matters By playing this video you consent to Google/YouTube processing your data and using cookies – Learn more . Position Description: CGI Federal is currently looking for an Information Systems Security Representative – Sr. with active Top Secret clearance to support a large project for a federal government client. The ISSR -Sr. will work in an agile environment, applying a variety of technical skills in a fast-paced setting. The role involves supporting the design, implementation, and maintenance of secure systems and networks, contributing to compliance efforts, and collaborating with cross-functional teams. Your future duties and responsibilities: • Ensure that controlled systems 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 controlled systems and legacy federal agency systems migrating into the GRC application. • Provide baseline security controls to the system owner, contingent upon the system’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 system’s authorization boundary. • Ensure that new entities are created in the GRC application with the security categorization of systems. • Initiate, coordinate, and recommend to the federal agency Authorizing Official all Interconnection Security Agreement (ISAs), Memorandum of Understanding (MOUs), and Memorandum of Agreement (MOAs) that permit the interconnection of controlled systems with any non-federal agency or joint-use network. • Perform an independent review of the System Security Plan (SSP) and make approval decisions. • Request and negotiate the level of testing required for a controlled system with the Enterprise Information Security Section and the federal agency Authorizing Official. • Schedule security control assessments in coordination with the system owner. • Coordinate Information Security inspections, tests, and reviews with the Security and system owner. Submit the final SAA package to the federal agency Authorizing Official for a security ATO decision. • Ensure that the Security ATO Electronic Communication (EC) is serialized into Sentinel under the applicable case file number. • Advise the federal agency Authorizing Official of system vulnerabilities and residual risks. • Ensure that all POA&M actions are completed and tested. • Coordinate initiation of an event-driven reauthorization with the federal agency Authorizing Official. • Ensure the removal and retirement of controlled systems being decommissioned, in coordination with the SO, ISSO, and ISSR. Required qualifications to be successful in this role: • Active Top Secret clearance with eligibility for SCI. • U.S. Citizenship is required due to the nature of the government contract. • Bachelor’s or advanced degree in Computer Science, Cybersecurity, Information Technology, or a related discipline. • 10 years of professional experience in computer science or cybersecurity, including 8 years in senior-level IT roles. • 7 years of direct ISSR experience at a cleared facility. • Demonstrated leadership in RMF lifecycle implementation and security engineering. • In-depth knowledge of NIST guidance, SAA processes, and federal cybersecurity compliance frameworks. • Proven ability to lead cross-functional teams and communicate effectively with executives and stakeholders. • Strong skills in risk analysis, technical documentation, and mentoring. • At least one of the following certifications: o CISSP, GISP, CASP, CSSLP o CISSP-ISSEP or CISSP-ISSAP o Other certifications meeting DoD 8570.1 IAM Level II requirements • Experience with security tools such as: o Tenable Nessus/Security Center o IBM Guardium o HP WebInspect o NMAP or similar applications • Preferred experience with Joint Cybersecurity Authorization Management (JCAM) and/or Xacta. CGIFederalJob LI-DD1 Skills: Information Security Mgmt What you can expect from us: Together, as owners, let’s turn meaningful insights into action. Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because… You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction. Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise. You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons. Come join our team—one of the largest IT and business consulting services firms in the world. Qualified applicants will receive consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business. CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at US_Employment_Compliance@cgi.com . You will need to reference the Position ID of the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position ID will not be returned. We make it easy to translate military experience and skills! Click here to be directed to our site that is dedicated to veterans and transitioning service members. All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of US government security clearance held. Dependent upon role and/or federal government security clearance requirements, and in accordance with applicable laws, some background investigations may include a credit check. CGI will consider for employment qualified applicants with arrests and conviction records in accordance with all local regulations and ordinances. CGI will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI’s legal duty to furnish information.

Keywords: CGI, Charlottesville , Information System Security Representative (ISSR) – Sr, IT / Software / Systems , Washington, Virginia