Our client is Canada's largest retailer. They are looking for a Senior Python Developer focused on backend development, API services, and scalable microservices architecture to build and enhance data-driven application components.

Duration: Until December 2026, with possibility of extension

Location: Hybrid - Brampton or North York - 3 days onsite

Responsibilities:
Develop, test, and maintain scalable back-end services and RESTful APIs
Contribute to performance optimizations across application and database layers
Collaborate with Product Owners, BSAs, and engineers to translate requirements into scalable technical solutions
Support microservices-based architecture and backend integrations
Contribute to services that enable data-driven features and advanced analytics capabilities
Participate actively in Agile ceremonies including sprint planning, estimation, and retrospectives
Write clean, maintainable, production-ready code
Support containerized deployment and cloud-based settings





Must Have Skills:
6+ years of backend development experience using python, developing production-level backend systems
Robust Python development and SQL skills (writing complex queries, working with relational databases)
Familiarity with Systems Architecture, Microservices design
Familiarity with SDLC best practices and testing, and is familiar with how to use AI responsibly
Experience building and consuming RESTful APIs
Experience with Cloud technologies (GCP preferred, Azure or AWS acceptable)
Experience with Docker (containerization) and familiarity with Kubernetes

Nice to Have:
Experience supporting data products or analytics platforms)
Exposure to AI/ML-driven applications

Disclaimer: AI may be used in evaluating candidates.
This posting is for an existing vacancy.
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📌 Senior Python Developer Data Products Toronto (Canada)
🏢 S.i. Systems
📍 Canada