Senior Full Stack Developer (Java/Scala)

Senior Full Stack Developer (Java/Scala)

Position Description
We are seeking a Senior Full Stack Developer with experience building scalable cloud-native applications and backend services. The ideal candidate will have strong expertise in one or more of Java, Scala, Golang, or Python, along with experience designing APIs, integrating enterprise systems, and developing solutions within AWS environments. This role will focus on application development, system integration, cloud architecture, and modern software delivery practices while collaborating with cross-functional teams in an Agile environment. Eligible locations include Halifax, NS; St. John's, NL; Fredericton or Moncton, NB; and Stratford, PEI. This is a hybrid position requiring 3 days per week onsite.

Your future duties and responsibilities
• Design, develop, and maintain scalable backend services and APIs using Java, Scala, Golang, or Python.
• Architect and implement integrations with external systems and third-party services.
• Develop and support cloud-native applications hosted on AWS.
• Design and optimize RESTful APIs, GraphQL services, and event-driven architectures.
• Collaborate with front-end developers and product teams to define application requirements and data flows.
• Design and optimize relational database solutions using PostgreSQL and MySQL.
• Implement caching strategies using Redis to improve application performance and scalability.
• Contribute to CI/CD pipelines and automated deployment processes.
• Participate in Agile ceremonies, code reviews, and technical design discussions.
• Troubleshoot production issues and drive continuous improvement of application reliability, performance, and security.

Required qualifications to be successful in this role
• 6+ years of software development experience using one or more of the following languages: Java, Scala, Golang, or Python.
• 5+ years of experience developing and supporting AWS-hosted applications.
• Strong understanding of REST APIs, GraphQL, and event-driven architectures.
• 6+ years of experience working with relational databases, preferably PostgreSQL.
• 4+ years of experience implementing caching solutions using Redis or similar technologies.
• Experience building and supporting distributed systems and microservices architectures.
• Experience working in Agile software delivery environments.
• Experience working within Continuous Integration and Continuous Deployment (CI/CD) models.
• Strong knowledge of Git-based source control and modern development workflows.
• Excellent problem-solving, analytical, and communication skills.
• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or equivalent practical experience.

Nice-to-have qualifications
• Experience building and managing Docker containers.
• Experience with container orchestration technologies such as AWS ECS and Kubernetes.
• Experience creating, maintaining, and troubleshooting CI/CD pipelines using GitHub Actions.
• Experience with React and modern front-end frameworks.
• Experience with large-scale enterprise application development.
• AWS certifications or cloud-related certifications.

CGI is providing a reasonable estimate of the pay range for this role. The determination of this range includes factors such as skill set level, geographic market, experience and training, and licenses and certifications. Compensation decisions depend on the facts and circumstances of each case. A reasonable estimate of the current range is $65,000–$125,000. This role is an existing vacancy.

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.

At CGI, we value the strength that diversity brings and are committed to fostering a workplace where everyone belongs. We collaborate with our clients to build more inclusive communities and empower all CGI partners to thrive. As an equal-opportunity employer, being able to perform your best during the recruitment process is important to us. If you require an accommodation, please inform your recruiter.

That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

To learn more about accessibility at CGI, contact us via email . Please note that this email is strictly for accessibility requests and cannot be used for application status inquiries.

Come join our team—one of the largest IT and business consulting services firms in the world.