Intermediate Python Developer - Data & ETL
S.i. Systems
Toronto, ON-
Number of positions available : 1
- Salary To be discussed
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Contract job
- Published on February 11th, 2026
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Starting date : 1 position to fill as soon as possible
Description
Our client is Canada's largest retailer. They are looking for an Int. Python Developer to support data-driven initiatives through hands-on development in Python and SQL.
This involves working on data ingestion, transformation, validation, and database integration within a cloud-based data environment.
The ideal candidate has experience as a Python Developer or Data Engineer working with large-scale datasets and is comfortable building and maintaining in ETL workflows and data pipelines.
Duration: 6 Months, to start
Location: Brampton - 2 days/week onsite
Responsibilities:
- Develop and maintain data solutions using Python and SQL.
- Build and support ETL processes including:
- File ingestion
- Data cleansing and transformation
- Data validation
- Loading data into databases and APIs
- Connect to and interact with databases using Python (API clients, database connectors, data processing libraries)
- Query and analyze data in PostgreSQL and BigQuery
- Modify and optimize existing data scripts and contribute to new development
- Perform data reconciliation and troubleshooting across multiple data sources
- Support consent management and real-time data workflows
- Collaborate with stakeholders to understand data requirements and deliver scalable solutions
Must Have Skills:
- 5+ years of experience in Python Development or Data Engineering
- Strong Python for Data Manipulation, API Integration, and ETL Development
- Advanced SQL skills for querying, analysis, and troubleshooting
- Experience working in Cloud environments (GCP preferred: AWS or Azure acceptable)
- Experience building and maintaining ETL/Data Pipeline processes
AI may be used in evaluating candidates.
This posting is for an existing vacancy.
Requirements
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