Sr. Full Stack Engineer

Position Description

CGI Federal is seeking a Full Stack Engineer – Senior to support application design, development, integration, and modernization for a major federal transformation program. This senior role develops secure, scalable, cloud-ready solutions and works across the entire stack—front-end, back-end, APIs, databases, and cloud environments. The Full Stack Engineer collaborates with Product, DevSecOps, Cloud, Data, QA, and Migration teams to deliver mission-critical capabilities that meet federal performance, security, and compliance standards.

Your future duties and responsibilities

Application & API Development

• Design, develop, and maintain front-end and back-end components for enterprise applications

• Build and optimize REST APIs, microservices, and system-to-system integrations

• Ensure code quality, performance, and maintainability across the full stack

Cloud-Ready Engineering

• Develop cloud-compatible services and applications (AWS preferred)

• Support deployment of pipelines, infrastructure integration, and CI/CD workflows

• Align application architecture with modernization and cloud migration requirements

Technical Leadership & Collaboration

• Collaborate with Scrum Masters, Product Leads, QA Automation Engineers, Cloud Engineers, and Data Engineers

• Participate in sprint planning, backlog refinement, technical design reviews, and demos

• Mentor mid-level engineers and support knowledge-sharing across teams

Security, Performance & Compliance

• Implement secure coding practices, logging, auditing, and data-handling requirements

• Conduct performance tuning, optimization, and reliability improvements

• Ensure delivery aligns with federal security standards and program governance

Testing & Quality Support

• Support automated testing and validation of application functionality and integrations

• Troubleshoot defects across the stack and coordinate with QA to resolve issues

• Validate readiness for release and major deployment events

Documentation & Reporting

• Develop technical design documents, API specifications, data flow diagrams, and code documentation

• Maintain full-stack engineering artifacts required for release, sustainment, and audits

• Provide status updates and technical insights to leadership and cross-functional teams

Required Qualifications To Be Successful In This Role

• Must have an Active Top Secret Security Clearance

• U.S. Citizenship

• Bachelor’s degree and 8+ years of experience in software engineering or full-stack development

• Experience developing both front-end and back-end solutions using modern frameworks

• Hands-on experience with APIs, microservices, relational and NoSQL databases

• Experience with CI/CD pipelines, Git, DevSecOps environments, and automated testing

• Strong ability to troubleshoot issues across the entire stack

• Excellent communication and documentation skills

Preferred Qualifications

• Experience supporting DOJ, FBI, Intelligence Community, or other national-security programs

• Experience with cloud-native architectures (AWS strongly preferred)

• Familiarity with containerization (Docker), orchestration (Kubernetes), or serverless frameworks

• Experience with performance engineering, load testing, or automated quality pipelines

• Knowledge of Python, Java, JavaScript/TypeScript, or similar languages used across full-stack systems

Due to the nature of this government contract, US Citizenship is required.

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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.

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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.