Associate Staff Engineer QA Tester
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Job Location:
Mississauga - Canada
Monthly Salary:
Not Disclosed
Posted on:
5 hours ago
Vacancies:
1 Vacancy
Department:
Job Summary
Role - QA Tester
Location - Mississauga Greater Toronto Area ON L5B 1M2 Canada
Work Model - Onsite - Hybrid
Employment type - Full-time
Job Overview:
- We are looking for a QA Data Engineer who will ensure data accuracy throughout the entire lifecycle from backend ETL pipelines to frontend visualization.
- This position requires a hybrid approach combining thorough manual data reconciliation with the implementation of automated testing frameworks for enterprise data platforms.
- Responsibilities include verifying that BI dashboard numbers match the source data ensuring accuracy completeness and consistency of data as it moves through pipelines.
- The ideal candidate will possess a strong understanding of data architecture manual exploratory testing and automated validation at scale along with the business acumen to confirm that data aligns with strategic KPIs and operational needs.
Core Responsibilities:
- Design and execute automated test plans for ETL/ELT pipelines to verify data transformations and schema integrity. Perform source-to-target mapping and reconciliation checks across data lakes warehouses and reporting layers.
- Implement data-specific automation using AWS DQDL framework.
- Validate performance of large-scale pipelines and identify bottlenecks in data processing runtimes.
- Conduct regression testing to ensure new ETL code deployments do not disrupt existing metrics or KPI calculations.
- Investigate data quality incidents end-to-end and provide technical feedback to engineers and product owners.
Required Skills & Qualifications:
- Bachelors degree in Computer Science Engineering or a related technical field.
- 4-7 years of experience in data quality assurance.
- Advanced proficiency in SQL including complex queries joins window functions and stored procedure validation.
- Proficiency in Python for scripting automated validation checks.
- Experience with cloud data warehouses (Iceberg AWS Redshift etc.) and file formats such as Parquet and JSON.
- Hands-on experience validating mappings and data lineage in ETL processes.
- Basic understanding of integrating tests into GitHub Actions workflows.
- Strong knowledge of relational databases and SQL for data validation.
- Experience with RESTful API testing tools like Postman.
- High attention to detail critical thinking and strong written and verbal communication skills.
- Familiarity with BI tools like Tableau for dashboard validation.
Qualifications :
Must have Skills:
- Must have minimum 4 years of experience in to QA testing.
- SQL (Strong) Python (Strong) ETL Testing (Strong)
Additional Information :
Disclaimer: Nagarro is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will be afforded equal employment opportunities without discrimination based on race creed color national origin sex age disability or marital status.
Remote Work :
No
Employment Type :
Full-time
About Company
Nagarro helps future-proof your business through a forward-thinking, fluidic, and CARING mindset. We excel at digital engineering and help our clients become human-centric, digital-first organizations, augmenting their ability to be responsive, efficient, intimate, creative, and susta ... View more
