Senior Full Stack Engineer

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

Job Description:

U.S. - What we do matters By playing this video you consent to Google/YouTube processing your data and using cookies – Learn more . Position Description: CGI has an immediate need for a Senior Full Stack Engineer to join our team. This is an exciting opportunity to work in a fast-paced team environment supporting one of the largest customers. We take an innovative approach to supporting our client, working side-by-side in an agile environment using emerging technologies. We partner with 15 of the top 20 banks globally, and our top 10 banking clients have worked with us for an average of 26 years!. This role is located at a client site in Reston, VA. A hybrid working model is acceptable. Your future duties and responsibilities: We're looking for a Senior Full Stack Engineer to help design, build, and scale modern cloud-native applications. This role spans both backend and frontend development, with a strong emphasis on Python-based services, API design, and distributed systems running on AWS. You'll play a key role in delivering production-ready solutions, contributing to architectural decisions, and ensuring systems are scalable, reliable, and performant. The position involves close collaboration with cross-functional teams, working in an agile environment to bring high-quality software from concept to deployment. This role is ideal for someone who enjoys solving complex engineering challenges, has a passion for clean and maintainable code, and is comfortable integrating emerging technologies like AI/LLM capabilities into real-world applications. Required qualifications to be successful in this role: . 7 years of hands-on experience building and deploying production-grade applications . Deep experience with AWS services (Lambda, ECS, EC2, RDS, S3, API Gateway, etc.) . Solid Python skills, with experience in frameworks like FastAPI or Flask . Comfortable working across the stack, including modern frontend frameworks such as React, Angular, or Vue . Experience designing and building RESTful APIs and working with microservices architectures . Familiarity with distributed systems and the challenges of scaling them . Practical experience with both SQL and NoSQL databases (e.g., PostgreSQL, DynamoDB) . Experience with containerization (Docker) and orchestration tools like Kubernetes . Working knowledge of CI/CD pipelines and version control systems such as Git (GitLab preferred) . Exposure to infrastructure as code tools like Terraform . Understanding of software design principles, data structures, and algorithmic thinking . Experience with automated testing (unit and integration) and maintaining code quality . Ability to design systems with performance, scalability, and reliability in mind . Experience handling large datasets (JSON, XML, Parquet, etc.) . Exposure to LLMs or AI-driven application features is a strong plus . Familiarity with AI-assisted development tools (e.g., GitHub Copilot) . Strong problem-solving skills and the ability to collaborate effectively in agile teams Education: Bachelor's degree in Computer Science, Information Systems, or a related field.? LI-LB3 DICE Other Information: 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 $95,800.00 - $154,300.00. CGI'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 Skills: Full Stack Development NoSQL Python SQL Terraform 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, Leesburg , Senior Full Stack Engineer, IT / Software / Systems , Reston, Virginia