senior systems testing/qa specialist.

We are seeking an experienced Senior Systems Testing/QA Specialist to lead quality assurance execution across complex, interconnected software applications. In this role, you will hold complete operational ownership of the end-to-end testing lifecycle, collaborating with business analysts, developers, and project leads to validate high-availability enterprise systems. Operating across diverse delivery methodologies, you will design master test plans, build comprehensive test cases, perform multi-tier functional and technical testing, manage defect resolution cycles, and ensure solutions align strictly with performance, security, and business standards.

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

Duration: 8-month contract

Advantages
Comprehensive Testing Scope: Own end-to-end QA execution covering functional, performance, security, and backend validation across multi-tier, 24x7 mission-critical systems.

Diverse Methodological Footprint: Apply quality assurance frameworks adaptively across both Agile and Waterfall project delivery models.

Full Toolset Ownership: Utilize industry-standard defect tracking, environment configuration, and test management tools to drive release readiness.

Collaborative Onsite Environment: Engage directly with cross-functional project squads in a structured, 5-day onsite workspace built for real-time triage and rapid resolution.

Responsibilities
Collaborate with business analysts and subject matter experts during requirements walkthroughs to ensure complete alignment between business use cases and quality assurance scope.

Author, document, and execute master test strategies, comprehensive test plans, scenarios, and detailed test cases covering all phases of quality assurance.

Perform functional, system integration, end-to-end, regression, and performance testing across web, desktop, and mobile platforms.

Conduct specialized testing tracks, including unit, user acceptance (UAT), production acceptance, security, vulnerability, backend, and web services testing.

Develop, document, and complete testing checklists across all project phases, incorporating results into final production readiness check lists.

Execute manual and automated test scripts, compiling and reporting test findings, defect metrics, and execution telemetry to project stakeholders.

Identify, document, and track software defects using tools such as JIRA, Confluence, or TestRail, leading defect resolution, re-testing, and issue closure workflows.

Partner with project managers and corporate IT leads to support release management, change execution, and formal architecture checkpoint reviews.

Assist in configuring, maintaining, and troubleshooting system and testing environments for in-house developed and commercial off-the-shelf (COTS) applications.

Qualifications
Quality Assurance Seniority: 10+ years of dedicated professional experience developing test strategies, test plans, scenarios, test cases, and managing end-to-end QA execution (Strictly Required).

Multi-Methodology Delivery: Proven experience delivering testing and quality assurance requirements within both Waterfall and Agile development environments (Strictly Required).

Multi-Tier Solution Testing: Demonstrated expertise testing multi-tier, multi-platform, integrated/interconnected solutions, COTS applications, and enterprise reporting systems (Strictly Required).

Defect Lifecycle Management: Proven track record identifying, tracking, coordinating, re-testing, and resolving system defects using tools such as JIRA, Confluence, or TestRail (Strictly Required).

Full-Spectrum Testing Execution: Deep hands-on experience performing functional, regression, performance, load, user acceptance, security, backend, and web services testing.

Environment & Application Troubleshooting: Practical capability configuring test environments, debugging system issues, and executing manual test suites alongside automated test runs.

Soft Skills: Superior analytical reasoning, technical documentation, and interpersonal negotiation skills, with a track record of driving cross-functional alignment and meeting tight deadlines.

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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