Information Systems Security Engineer (ISSE) - Senior

Company: CGI
Location: Arlington
Posted on: April 1, 2026

Job Description:

Position Description: CGI Federal has an exciting opportunity for an ISSE within our Intel sector advancing the national security mission through cutting edge technology. You must have a passion for keeping pace with rapidly evolving technology advancements and leveraging your knowledge on a highly collaborative team to deliver state-of-the-art capabilities. The Information System Security Engineer (ISSE) designs, implements, and manages security solutions for information systems. Their responsibilities include ensuring systems meet security standards, conducting risk assessments, and recommending mitigation strategies. They collaborate with various teams to integrate security controls and maintain a secure operational environment. CGI Federal is growing its high-performance team whose members share a passion for building high-quality, scalable, advanced IT solutions in a collaborative, fast-paced, outcome-driven mission. This position is located in Arlington, VA. Your future duties and responsibilities: • Security Architecture Design: Developing and implementing security architectures for information systems, including hardware, software, and network components. • Risk Management: Identifying and assessing security risks, developing mitigation strategies, and implementing security controls to address identified vulnerabilities. • Security Compliance: Ensuring systems comply with relevant security policies, regulations, and standards, such as NIST, RMF, and ICD 503. • Vulnerability Management: Conducting vulnerability scans, analyzing results, and recommending remediation actions. • Security Documentation: Creating and maintaining security documentation, including system security plans, security assessment reports, and risk management plans. • Collaboration and Communication: Working closely with system administrators, network engineers, software developers, and other stakeholders to integrate security into the system development lifecycle. • Continuous Monitoring: Participating in continuous monitoring activities to ensure ongoing security posture and compliance. • Incident Response: Participating in incident response activities, including investigating security incidents, analyzing malware, and implementing forensic analysis. Required qualifications to be successful in this role: • Education and/or Experience: Bachelor’s degree and/or 5 to 8 years of experience • Security Clearance: Candidates must possess an active TS/SCI clearance with polygraph • Technical Expertise: Strong knowledge of security principles, technologies, and best practices. • Risk Management Framework (RMF): Experience with the Risk Management Framework and its application to information systems. • Security Architecture: Understanding of secure system design principles and experience developing secure architectures. • Security Controls: Knowledge of various security controls and their implementation. • Vulnerability Assessment: Experience with vulnerability scanning tools and techniques. • Security Documentation: Ability to create and maintain security documentation. • Communication Skills: Excellent verbal and written communication skills to collaborate with diverse teams. • Problem-Solving: Strong analytical and problem-solving skills to address complex security challenges. • Relevant Certifications: CISSP, CISM, CAP, or other security certifications. CGI is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. The determination of this range includes various factors not limited to skill set, level, experience, relevant training, and licensure and certifications. To support the ability to reward for merit-based performance, CGI typically does not hire individuals at or near the top of the range for their role. Compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range for this role in the U.S. is $88,200.00 - $173,500.00. CGI Federal's benefits are offered to eligible professionals on their first day of employment to include: • Competitive compensation • Comprehensive insurance options • Matching contributions through the 401(k) plan and the share purchase plan • Paid time off for vacation, holidays, and sick time • Paid parental leave • Learning opportunities and tuition assistance • Wellness and Well-being programs CGIFederalJob 79570 ClearanceJobs CGIintelligencecareers MARSCareers Skills: English Security Architecture Vulnerability Management(IAVM) 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 Systems Security Engineer (ISSE) - Senior, IT / Software / Systems , Arlington, Virginia