Senior Java Developer to Develop and maintain Java-based services and APIs supporting system integrations
S.i. Systems
Toronto, ON- Salary To be discussed
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Contract job
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Published since 7 day(s)
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1 position to fill as soon as possible
Description
Our client, Canada's largest retailer, currently has an opening for a Senior Java Developer, to support a transportation management system integration initiative in their Supply Chain Technology team.
The role will focus on supporting ongoing build and integration efforts, working across multiple systems to ensure stable, scalable interfaces and timely delivery against key milestones.
The successful candidate will work in our integration-heavy environments, logistics/supply chain systems, and with various SaaS platform.
Start Date: ASAP
End Date: Dec. 11, 2026, with possibility of extension
Location: Brampton, 4 days per week onsite preferred for collaboration, with flexibility
Must Haves:
- 7+ years of Java experience (Spring Boot)
- 7+ years of experience with API Engineering and integration (Postman, Swagger, Open API); preferably delivered enterprise integration projects, eventing, queues and operational support
- SQL or Database knowledge
- Experience with React UI
- Exposure to Cloud environments, GCP preferred
Nice to Have:
- API Integration experience (Postman, Swagger, Open API)
- Knowledge of or experience with supply chain / logistics, telematics platforms
- Ownership, mentoring, code standards and design decisions
AI may be used in evaluating candidates.
This posting is for an existing vacancy.
Requirements
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