Senior Java Backend Developer (Hybrid)

Position: Senior Java Backend Developer (Hybrid)

Location: Mississauga, ON

Job type: Full-time/Permanent hiring

Senior Java Microservices Developer with experience in enterprise application development using Java 8/11/17, Spring Boot, and Microservices architecture . Responsible for designing scalable REST APIs, developing event-driven integrations using Kafka , and managing high-performance MongoDB data solutions. The role includes cloud deployments on OpenShift/AWS, production support, CI/CD enablement, and delivering secure, resilient, high-availability applications.

Must Have Technical/Functional Skills

Core Development

• Java (8/11/17) – strong hands-on experience

• Spring Boot, Spring MVC, Spring Data

• Microservices architecture (service decomposition, API contracts)

• REST APIs, JSON, OpenAPI / Swagger

• Kafka producer, consumer, partitioning

• MongoDb

• Openshift / AWS

Database & Data Layer

• MongoDB

o Document modeling

o Indexing strategies

o Aggregation framework

o CRUD & performance tuning

Integration & Messaging

• Experience with Kafka (preferred)

• REST based integrations with upstream/downstream systems

Roles & Responsibilities

• Design, develop, and maintain Java based microservices

• Implement RESTful APIs adhering to enterprise design standards

• Develop and optimize SQL queries (E2 level) for transactional and reporting use cases

• Design and manage MongoDB schemas, indexes, and queries

• Ensure high availability, scalability, and performance of microservices

• Apply exception handling, logging, monitoring, and resiliency patterns

• Collaborate with Business Analysts, Architects, QA, and DevOps teams

• Participate in code reviews, unit testing, and defect resolution

• Support CI/CD pipelines, deployments, and production issues

• Follow secure coding and compliance standards