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Senior Java Developer – Spring Boot, Microservices, Kafka & MongoDB

Mississauga, Ontario, CanadaFull-timeSeniorPosted Nov 4, 2026

Job description

SENIOR JAVA DEVELOPER – SPRING BOOT, MICROSERVICES, KAFKA & MONGODB Experience Range: 9–12 Years 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 Document modeling Indexing strategies Aggregation framework CRUD and 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.

Description copied from Astra-north's careers page. Read the full posting before you apply.

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