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 environments





Must Have Skills:

- 6+ years of backend development experience using python, developing production-level backend systems
- Solid 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.

📌 Senior Python Developer - Data Products (Toronto)
🏢 S.i. Systems
📍 Toronto