Java Developer

Mississauga, ON
Hybrid
Posted Oct 28, 2026
1 position

$120,000–$130,000 / year

Opens LinkedIn

Employment type: Full-time
Experience level: Lead · 10+ years
Apply by: Apr 25, 2027
Posting language: English
Working hours: 40 hours per week
Seniority: Entry level
Application method: Apply on LinkedIn (LinkedIn sign-in required)

Job summary

Design, develop, and maintain scalable Java microservices and REST APIs, including MongoDB data models and optimized SQL queries. Ensure application reliability, security, and performance while supporting integrations, testing, deployments, production troubleshooting, and collaboration across business and technical teams.

Job details

Location: Mississauga, ON (Hybrid) Salary: CAD $120,000–$130,000 per year Experience: 9–12 years About the Role We are looking for an experienced Java Developer to design, develop, and maintain scalable, high-performance microservices and REST APIs. The ideal candidate will have strong hands-on experience with Java, Spring Boot, MongoDB, and microservices architecture, along with exposure to Kafka and cloud or container platforms such as AWS and OpenShift. Key Responsibilities Design, develop, and maintain Java-based microservices. Build RESTful APIs following enterprise design standards. Develop and optimize SQL queries for transactional and reporting requirements. Design and manage MongoDB schemas, indexes, queries, and aggregation pipelines. Ensure high availability, scalability, reliability, and performance of applications. Implement exception handling, logging, monitoring, and resiliency patterns. Develop and maintain integrations with upstream and downstream systems. Collaborate with Business Analysts, Architects, QA, and DevOps teams. Participate in code reviews, unit testing, debugging, and defect resolution. Support CI/CD pipelines, deployments, and production troubleshooting. Follow secure coding practices and enterprise compliance standards Required Technical Skills Java: Strong hands-on experience with Java 8, 11, or 17. Spring Framework: Spring Boot, Spring MVC, and Spring Data. Microservices: Service decomposition, API contracts, and distributed application design. API Development: REST APIs, JSON, OpenAPI, and Swagger. MongoDB: Document modeling, indexing strategies, aggregation framework, CRUD operations, and performance tuning. SQL: Query development and optimization for transactional and reporting use cases. Messaging: Kafka producers, consumers, and partitioning concepts. Cloud and Containers: Experience with AWS and/or OpenShift. Integration: REST-based integrations with upstream and downstream systems.

What you’ll do

Requirements

Requires 9–12 years of experience and strong hands-on skills in Java 8, 11, or 17, Spring, microservices, REST API development, MongoDB, and SQL. Experience with Kafka and AWS and/or OpenShift is also sought, along with knowledge of integrations, testing, CI/CD, and secure coding practices.