Senior Full Stack Java Developer
CGI
Position Description:
We are seeking a Fullstack Developer with strong backend expertise to design, develop, and govern enterprise-grade applications. This role emphasizes Java 17/21 and Spring Boot 3.x, microservices architecture, and AWS cloud deployment, while ensuring compliance with technical standards, governance, risk management, and driving continuous improvement.
Location - Markham (Hybrid - 3 days office) subject to change at any time.
Your future duties and responsibilities:
Backend Development (Primary Focus)
. Build scalable, high-performance RESTful APIs using Java 17/21 and Spring Boot 3.x.
. Architect and implement microservices with Spring Cloud (Gateway, Config, Discovery).
. Implement security using Spring Security 6.x (OAuth2, JWT, RBAC), with structured logging and robust error
handling.
. Design and optimize schemas; tune queries with Spring Data JPA/Hibernate 6.x for PostgreSQL/MySQL.
. Develop event-driven patterns with Kafka or AWS SNS/SQS; apply caching (Redis/Caffeine) where needed.
. Write unit/integration tests (JUnit 5, Mockito, Testcontainers) and ensure performance/availability (health checks,
DR).
. Drive technical governance, code quality, and adherence to architecture standards; lead root-cause analysis for
production incidents.
Frontend Development
. Develop responsive UIs with Angular 17+, TypeScript 5.x, HTML5, SCSS, and Angular Material.
. Integrate backend APIs; handle async workflows with RxJS and adopt state management (NgRx or Signals).
. Ensure UI quality with unit tests (Jest/Jasmine) and e2e tests (Cypress).
Cloud & DevOps
. Deploy and operate on AWS (EC2, S3, RDS, Lambda, API Gateway, CloudWatch).
. Implement CI/CD (Jenkins/GitLab CI/AWS CodePipeline) and containerization with Docker.
. Use IaC (CloudFormation/Terraform); monitor and optimize cost/performance.
Collaboration & Best Practices
. Participate in code reviews; maintain coding standards and clear technical documentation.
. Collaborate with Product, Design, QA; work in Agile/Scrum and contribute to roadmap/architecture.
. Champion continuous improvement and process innovation to drive quality and efficiency.
Required qualifications to be successful in this role:
Required Qualifications
. Technical Skills (Backend Expertise is MANDATORY)
. Expert-level Java 17/21 & Spring Boot 3.x; deep Spring ecosystem (MVC, Data JPA, Security 6.x).
. Strong microservices architecture with Spring Cloud; REST API design best practices.
. RDBMS expertise (PostgreSQL/MySQL); ORM and query optimization; NoSQL (MongoDB/DynamoDB) a plus.
. Messaging (Kafka, RabbitMQ, AWS SQS/SNS); WebFlux/reactive knowledge preferred.
Additional Skills
. Frontend: Angular 17+, TypeScript; RxJS/Signals; modern build tooling.
. Cloud & Infra: AWS hands-on, Docker; Git; CI/CD practices.
. Experience: 2–4 years professional Java backend development building production systems.
. Soft skills: problem-solving, debugging, communication, teamwork.
Preferred Qualifications
. AWS certifications; Kubernetes/ECS; GraphQL; Serverless (Lambda).
. Monitoring (CloudWatch/New Relic/Datadog); Elasticsearch; Redis/caching.
. Understanding of distributed systems and microservice patterns.
Capabilities
. Proactive ‘can do' attitude; strong verbal and written communication with IT and Business stakeholders.
. In-depth platform experience with practical experience gained over at least a 5 year period.
. Significant knowledge of Application Support and Development processes and techniques including CI, TDD, BDD.
. Propose innovative solutions or alternative approaches to difficult issues.
. Proven record in delivering technical solutions across run and/or change within this Platform.
. Experience working with Global Sourcing partners and developing solutions which improve the customer experience.
. Proven knowledge of Technical platforms, software engineering practices and system management methodologies.
**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 $95,000–$145,000. This role is an existing vacancy.
#LI-BN
Skills:
- Angular
- Financial Services
- GitLab
- Java
- Jenkins
- MySQL
- RESTful (Rest-APIs)
- Software Architecture
- Spring Boot
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.
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.
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.