Intermediate Python Developer (Data Products & Merchant Promotions Platform)

S.i. Systems • Toronto, Ontario, Canada • Posted March 23, 2026

Location Toronto, Ontario
Job Type Contract
Category Computer Occupations
Posted March 23, 2026

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

Duration: Until December , to start

Location: 2-3 days/week onsite in Brampton

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-re...
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