Java Developer

Job Overview

We are seeking an experienced Java Developer to join our team in Mississauga, ON. This full-time, onsite position demands strong expertise in developing and maintaining Java-based microservices within a microservices architecture.

Primary Responsibilities

• Design, build, and sustain Java microservices using modern frameworks and architectural patterns.
• Create RESTful APIs that comply with enterprise standards and best practices.
• Develop and refine SQL queries for both transactional and reporting purposes.
• Architect and administer MongoDB data schemas, indexes, and queries for optimal performance.
• Ensure services are highly available, scalable, and performant.
• Implement patterns for exception handling, logging, monitoring, and fault tolerance.
• Collaborate effectively with Business Analysts, Architects, QA, and DevOps professionals.
• Engage in code reviews, unit testing, and defect remediation activities.
• Support CI/CD processes, manage deployments, and troubleshoot production issues.
• Adhere to secure coding practices and compliance guidelines.

Technical Requirements

• Proficient hands-on experience with Java versions 8, 11, and 17.
• Strong knowledge of Spring ecosystem: Spring Boot, Spring MVC, Spring Data.
• Experience with microservices concepts including service decomposition and API contract design.
• Expertise in REST APIs, JSON handling, and documentation using OpenAPI/Swagger.
• Familiarity with Kafka messaging system including producer, consumer, and partition management.
• Solid background in MongoDB including document modeling, indexing strategies, aggregation framework, and CRUD operations with focus on performance tuning.
• Experience working with Openshift and AWS cloud platforms is beneficial.
• Understanding of REST-based integrations with external systems.