Senior System Architect

Senior System Architect

Category: Software Development/ Engineering

Main location: United States, District of Columbia, Washington

Position ID: J0626-0544

Employment Type: Full Time

U.S. - CGI Federal roles - Keeping Americans safe (

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Position Description:

CGI Federal is seeking a Senior Systems Architect to design, modernize, and optimize highly complex enterprise IT systems supporting federal cybersecurity and mission objectives. The Architect will provide Technical Architecture Leadership, guiding system modernization initiatives, multi‑tenant solution design, secure architecture development, and end‑to‑end systems integration. This role requires deep experience with federal cybersecurity frameworks, enterprise architecture, and cross‑functional technical leadership.

US Citizenship and an active TS/SCI clearance are required.

Your future duties and responsibilities:

• Lead the design and architecture of secure, scalable enterprise systems, ensuring compliance with federal security frameworks such as NIST SP 800‑53 and related guidance.

• Provide Technical Architecture Leadership, including architectural vision setting, technical decision-making, design governance, and guidance to engineering and development teams.

• Develop enterprise architecture artifacts including system diagrams, data flows, reference architectures, standards, and modernization roadmaps.

• Conduct architectural reviews, risk assessments, performance optimization, and security posture evaluations across the enterprise.

• Collaborate with cybersecurity, engineering, DevSecOps, and operations teams to ensure cohesive, secure system implementation aligned with mission objectives.

• Support complex production environments by diagnosing and resolving high‑priority technical issues.

• Advise government leadership on emerging technologies, architectural improvements, cloud strategy, modernization opportunities, and lifecycle planning.

• Mentor technical staff and contribute to enterprise-wide architecture best practices and governance processes.

Required qualifications to be successful in this role:

• Active TS/SCI clearance.

• Minimum 8+ years designing or architecting highly complex IT systems (LCAT requirement).

• Demonstrated experience providing Technical Architecture Leadership across large enterprise programs.

• Strong knowledge of federal cybersecurity frameworks, including NIST, FISMA, and Zero Trust principles.

• Experience with cloud architecture, multi-tenant systems, API integration, and enterprise modernization.

• Ability to communicate complex technical concepts to technical and non‑technical audiences.

• Certifications such as CISSP, AWS/Azure Solutions Architect, TOGAF, or equivalent.

• Experience leading DevSecOps initiatives and cloud migration programs.

• Familiarity with CI/CD, automation frameworks, and containerized architectures.

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 View email address on click.appcast.io . 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.

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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.