senior systems testing/qa specialist.

We are seeking a highly skilled Senior Systems Testing/QA Specialist to join our team, focusing on ensuring the reliability, performance, and integrity of enterprise health data platforms. In this role, you will be responsible for designing and executing comprehensive test plans, validating complex data engineering pipelines, and performing backend database testing using advanced SQL queries. Working closely with cross-functional teams of developers, business analysts, and architects within an Agile environment, you will drive defect management, support test automation, and elevate continuous integration practices.

Location: North york, ON (Fully Onsite – 5 days/week required)

Duration: 5-month contract

Advantages
Data-Centric QA Focus: Deep hands-on exposure validating complex data engineering, relational databases, and data quality pipelines.

Modern Testing Stack: Leverage advanced SQL, Python scripting, test automation frameworks (PyTest/Selenium), and CI/CD integrations.

Full-Lifecycle Scope: Drive quality assurance from early requirement analysis through backend data validation, defect triage, and performance verification.

Dedicated Onsite Collaboration: Work directly alongside senior developers, architects, and business leads in a focused 5-day onsite workspace.

Responsibilities
Design, develop, and execute comprehensive test plans, test cases, and test scripts for enterprise data platforms.

Perform functional, regression, integration, system, and performance testing across complex software solutions.

Validate data engineering activities to ensure data quality, transformation accuracy, schema integrity, and optimal database performance.

Write, optimize, and execute complex SQL queries for backend data analysis and verification.

Identify, document, isolate, and track software defects using tools such as JIRA or Azure DevOps, driving issues through full resolution.

Collaborate with cross-functional teams—including developers, business analysts, architects, and project leads—to understand requirements and ensure software quality standards are met.

Support test automation strategies and scripting using tools like Python, PyTest, or Selenium within CI/CD pipelines.

Produce clear and concise technical documentation, test execution coverage metrics, and summary reports for project stakeholders.

Qualifications
Quality Assurance Seniority: 10+ years of progressive experience in quality assurance and software system testing across complex enterprise applications (Strictly Required).

Data Management & Relational Databases: 5+ years of experience in data management, including designing, developing, or maintaining relational database management systems (SQL Server, Oracle, or PostgreSQL) (Strictly Required).

Advanced SQL Proficiency: Demonstrated expert-level ability to write and optimize complex SQL queries for data validation, data analysis, and backend database testing (Strictly Required).

Public Sector Experience: 5+ years of experience working in federal, provincial, or broader public-sector software development, testing, or operations environments (Strictly Required).

Testing Methodologies & Defect Tracking: In-depth knowledge of SDLC methodologies (Agile, Waterfall, Hybrid) and practical experience managing defect lifecycles using tools like JIRA or Azure DevOps.

Nice-to-Have Assets:
Hands-on experience with Python for test automation, scripting, and data validation (e.g., PyTest).

Practical experience conducting API testing (Postman, SoapUI) or performance testing (JMeter, LoadRunner).

Summary
If you're interested in the "Senior Systems Testing/QA Specialist" role based in Toronto, we encourage you to apply online at
Only qualified candidates will be contacted for the next steps. We look forward to hearing from you!

Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.

Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to View email address on randstad.com to ensure their ability to fully participate in the interview process.

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