Senior Java Developer

Position: Senior Java Developer

Location: Mississauga, ON (Hybrid)

Employment Type: Full-Time

Experience Required: 9- 12 Years

Key Responsibilities:

• Develop secure and enterprise-standard REST APIs and integrations.
• Design, develop, and maintain scalable Java-based microservices.
• Design and optimize MongoDB schemas, indexes, and queries.
• Develop and optimize SQL queries for transactional and reporting requirements.
• Ensure high availability, scalability, performance, and resiliency.
• Participate in code reviews, unit testing, defect resolution, and production support.
• Collaborate with Business Analysts, Architects, QA, and DevOps teams.
• Support CI/CD pipelines, deployments, and production troubleshooting.
• Follow secure coding, engineering, and compliance standards.

Key Technical Skills:

• Strong hands-on experience in Java 8/11/17, Spring Boot, Spring MVC, and Spring Data.
• Strong expertise in Microservices architecture, service decomposition, API contracts, and RESTful APIs.
• Experience with Kafka producers, consumers, partitioning, and messaging patterns.
• Strong MongoDB skills including document modeling, indexing, aggregation, CRUD, and performance tuning.
• Experience with SQL queries for transactional and reporting use cases.
• Hands-on experience with OpenShift and/or AWS.
• Knowledge of Open API/Swagger, JSON, resiliency, logging, monitoring, and exception-handling patterns.

Preferred Skills:

• Strong experience in Kafka-based integrations and event-driven architecture.
• Experience integrating with upstream/downstream systems using REST APIs.