Job Summary
We are seeking a highly skilled Senior QA Engineer with expertise in Tosca Data Integrity (DI), ETL Testing, and Data Warehouse Validation to join our Data Quality Assurance team. The ideal candidate will have hands‑on experience in validating complex data transformation processes, ensuring data integrity across source and target systems, and performing end‑to‑end testing of enterprise data platforms.

The candidate should possess strong SQL skills, experience working with modern databases and data warehouses, and the ability to collaborate effectively with business stakeholders, developers, and customer teams in an Agile setting.

Key Responsibilities
Data Testing & Validation

Design, develop, and execute test cases for ETL, Data Warehouse, and Data Migration projects.

Perform comprehensive source-to-target data validation to ensure data accuracy, completeness, and consistency.

Validate business rules, data transformations, mappings, and reconciliation across multiple systems.

Conduct data quality testing to identify duplicates, missing data, data anomalies, and integrity issues.

Verify data loads into reporting databases, data lakes, and data warehouses.

Tosca Data Integrity (DI)

Utilize Tricentis Tosca Data Integrity (DI) for automated data validation and reconciliation.

Develop and maintain reusable Tosca DI test cases and automation assets.

Perform metadata‑based testing and automated reconciliation between source and target systems.

Analyze validation results and provide detailed defect reports.

SQL & Database Testing

Create and execute complex SQL queries for data verification and validation.

Perform backend testing, data reconciliation,



aggregation validation, and exception analysis.

Validate data across relational and cloud-based databases.

Investigate and resolve data discrepancies through root cause analysis.

Application Accepted: 8/15/2026

The annual salary for this position is between $100,000 - $120,000 depending on experience and other qualifications of the successful candidate.

This position is also eligible for Cognizant’s discretionary annual incentive program, based on performance and subject to the terms of Cognizant’s applicable plans.

Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:

Health & Wellness

Extended Health Care Coverage

Prescription Drug Coverage

Dental Insurance

Vision Care

Life Insurance

Accidental Death & Dismemberment (AD&D;)

Short-Term Disability

Long-Term Disability

Employee Assistance Program (EAP) for mental health and counseling support

Registered Retirement Savings Plan (RRSP)

Disclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable la

Our strength is built on our ability to work together. Our diverse backgrounds offer different perspectives and new ways of thinking. It encourages lively discussions, creativity, productivity, and helps us build better solutions for our clients. We want someone who thrives in this setting and is inspired to craft meaningful solutions through true collaboration.

If you are content with ambiguity, excited by change, and excel through autonomy, we’d love to hear from you!

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📌 ETL Tester with TOSCA DI- Remote (Ontario)
🏢 Cognizant
📍 Ontario