Data Tester (Big Data QE

Job in Southwestern Ontario, London, Ontario, Canada

Listing for: Apptoza Inc.

Full Time position
Listed on 2026-08-03

Job specializations:

IT/Tech
Data Engineering, Data Analyst, IT QA Tester / Automation, Database Administrator

Salary/Wage Range or Industry Benchmark: 90000 - 120000 CAD Yearly CAD 90000.00 120000.00 YEAR

Position: Data Tester (Big Data QE)
Location: Southwestern Ontario

Key Responsibilities

Develop and execute test strategies aligned with design specifications, standards, and user requirements.

Perform ETL and database testing, data migration testing, and report validation.

Write and execute complex SQL queries for data analysis and validation.

Execute and validate queries in GCP Big Query.

Design and execute test cases in a Big Data environment.

Analyze data and validate data quality across various data sources.

Collaborate with Agile teams to test components iteratively throughout the development lifecycle.

Required Skills

6–8 years of experience in ETL Testing, SQL, Big Data, and Python.

Hands-on experience with:

ETL and Database Testing
Data Migration Testing
Report Validation

Strong knowledge of GCP Big Query.

Experience with PySpark and/or Python.

Expert-level SQL skills, including writing and understanding complex queries.

Advanced knowledge of Big Data technologies, including:

Hadoop
Hive
Impala
HBase

Experience working in Agile project environments.

Preferred Skills

Exposure to the Property & Casualty (P&C) Insurance domain, specifically Property and Auto Insurance.

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