senior systems testing/qa specialist.

We are seeking a highly accomplished Senior Systems Testing/QA Specialist for an enterprise-level contract opportunity based in Toronto. In this role, you will take on a premier engineering capacity within the quality assurance and release streams, specializing in the end-to-end design, automation, and execution of comprehensive test strategies for large-scale, complex software applications.

As a senior QA authority, you will bridge the gap between business specifications and technical execution, validating both Graphical User Interface (GUI) and non-GUI backend environments. Operating fully onsite in Toronto, you will collaborate with technical leads and project teams to design robust automation frameworks, run performance stress tests, and ensure full compliance with digital accessibility standards. This role is designed for an elite tester who can confidently diagnose system anomalies, manage full-lifecycle defect tracking, and safeguard the runtime integrity of mission-critical applications.

Location: Toronto, ON

Assignment Type: Onsite (5 days per week)

Contract Duration: 12 months (with potential for extension)

Advantages

Dual-Path Testing Mastery: Flex both manual diagnostic precision and advanced automated test engineering across complex system integrations.

Modern Automation Stack: Work directly with leading automation, performance, and API testing suites, including Selenium, Postman, and JMeter.

Accessibility Compliance Ownership: Build highly valued expertise leading critical web accessibility verifications to ensure software serves all users.

Collaborative Enterprise Reach: Interface with multi-disciplinary project teams, development leads, and business stakeholders to shape testing practices.

Responsibilities
Strategy & Framework Design: Provide expert guidance on master testing strategies, tool selections, environment resource planning, and systemic QA best practices.

Full-Lifecycle Test Generation: Author, update, and execute comprehensive test plans, scripts, scenarios, and test data sets for unit, integration, system, load, and user acceptance testing (UAT) phases.

Multi-Environment Automation: Lead the planning and coding of robust automated scripts to validate complex software components in both GUI and non-GUI settings.

API & Performance Testing: Conduct direct backend API integration testing and evaluate application performance limits under simulated stress conditions.

Digital Accessibility Auditing: Execute targeted verification sweeps to ensure all client-facing layouts and web components comply with strict accessibility legislations.

Defect Triage & Defect Management: Identify, isolate, and log system defects using enterprise tracking platforms, leading collaborative defect reviews to drive issues to resolution.

Data Verification: Execute direct backend database checks and data validation routines to check integration mappings and system records.

Cross-Functional Collaboration: Partner with developers, system architects, and business stakeholders during sprint planning to establish clear application feature acceptance criteria.

Qualifications
Core Technical & Testing Requirements
Enterprise QA Tenure: 10+ years of progressive software testing experience within enterprise-level IT environments and large-scale, multi-tier systems.

Automation Engineering Depth: Hands-on experience planning, developing, and executing automated test frameworks using industry-standard tools (such as Selenium).

API Validation Capabilities: Proven expertise running direct API validations and data ingestion checks using utilities like Postman.

Performance Testing Tooling: Practical experience configuring and managing performance, load, or stress test runs using tools like JMeter, LoadRunner, or comparable engines.

Structured Methodology Fluency: Deep understanding of Agile, Scrum, and Waterfall software delivery lifecycles and testing methodologies.

Accessibility Standards: Robust experience executing digital accessibility validation sweeps (AODA / WCAG compliance testing) across web layouts.

Database & Querying Skills: Strong working knowledge of relational database structures, utilizing SQL or Oracle queries to perform data verification.

Environment & Tools Assets
Infrastructure & Cloud Awareness: Foundational knowledge of cloud environments (such as Microsoft Azure or AWS) and release pipeline integration tools (Jenkins, Git, or GitLab).

Defect Tracking Platforms: High proficiency logging and managing software anomalies inside tools like Jira or Azure DevOps.

COTS Application Experience: Experience testing Commercial Off-the-Shelf (COTS) software applications is considered an asset.

Public Sector QA Alignment: Familiarity with public sector quality assurance standards, frameworks, and release protocols.

Professional Soft Skills
Analytical Problem Solving: Superior critical thinking, analytical reasoning, and data troubleshooting capabilities to navigate complex system environments.

Consultative Communication: Outstanding written and verbal communication skills, with polished ease when conveying technical test outcomes to both technical squads and business partners.

Adaptable Collaboration: A team player with a proven track record of working effectively under pressure to meet aggressive timelines in changing environments.

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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