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MSZ Systems

Senior Systems Testing/QA Specialist

Toronto, ON, Canada
Greater Toronto Area, Canada, Canada

Job type: Contract
Apply by: Oct 29, 2026
Experience: 10+ years of software testing experience in enterprise-level IT environments and large-scale systems.
Posting language: English
Posted: Sep 29, 2026

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Original job description

Senior Systems Testing/QA Specialist

Work Arrangement: 5 days onsite

Experience Level: Senior

Position Overview

We are seeking a Senior Systems Testing/QA Specialist with 10+ years of experience supporting enterprise-level applications and large-scale IT systems. The successful candidate will be responsible for developing comprehensive testing strategies, test plans, test cases, automation scripts, and executing functional and non-functional testing across complex applications.

The role requires strong experience in manual and automated testing, API testing, performance testing, database validation, cloud environments, CI/CD pipelines, and Agile/Scrum delivery.

Key Responsibilities

Develop and maintain testing strategies, test plans, test cases, test scripts, test data, and test reports.
Perform functional, integration, system, regression, acceptance, performance, load, and stress testing.
Conduct end-to-end testing of complex enterprise applications.
Execute both manual and automated testing.
Develop and maintain automated test scripts using tools such as Selenium, Postman, UFT, TestComplete, or similar tools.
Perform API and backend testing using tools such as Postman and SQL queries.
Develop and execute performance test scripts using JMeter, LoadRunner, or equivalent tools.
Identify, document, track, and manage defects using JIRA, Azure DevOps, ALM, Bugzilla, TestRail, Zephyr, or similar tools.
Work closely with developers to reproduce, troubleshoot, and resolve defects.
Validate data integrity, accuracy, consistency, migrations, and transformations across databases and system components.
Support User Acceptance Testing (UAT) activities.
Integrate automated testing into CI/CD pipelines.
Work with databases such as SQL and Oracle for backend validation.
Support applications hosted within Azure and/or AWS cloud environments.
Participate in Agile ceremonies including sprint planning, daily stand-ups, reviews, and retrospectives.
Ensure applications meet AODA accessibility requirements and standards.
Maintain detailed documentation of test results, coverage, defects, and quality metrics.
Follow QA standards, security testing practices, SDLC processes, and regulatory requirements.
Collaborate with developers, business analysts, project managers, technical leads, and other stakeholders.

Must-Have Qualifications

10+ years of software testing experience in enterprise-level IT environments and large-scale systems.
Strong hands-on experience with manual testing and automated testing frameworks/tools.
Strong understanding of Agile, Scrum, and Waterfall methodologies.
Extensive experience creating and maintaining:
Test strategies
Test plans
Test cases
Test scripts
Test data
Test reports
Experience with Selenium and/or Postman for automation and API testing.
Experience with performance testing tools such as JMeter, LoadRunner, or equivalent.
Knowledge and hands-on exposure to cloud technologies such as Azure and/or AWS.
Experience executing functional, integration, system, regression, UAT, load, and performance testing.
Strong understanding of SDLC and Software Testing Life Cycle.
Strong defect management experience using JIRA, Azure DevOps, ALM, or similar tools.

Technical Skills

Selenium
Postman / REST API Testing
JMeter / LoadRunner
SQL
Oracle
Azure
AWS
Azure DevOps
JIRA
ALM
Jenkins
Git / GitLab
CI/CD pipelines
TestRail / Zephyr
Automated testing frameworks
Basic scripting using Python, JavaScript, or Bash

Additional Preferred Experience

Strong experience with AODA accessibility testing and compliance.
Experience with QA compliance standards and security testing best practices.
Experience developing and managing test data strategies.
Experience validating data migrations and transformations.
Experience conducting basic security testing.
Experience working within highly regulated enterprise environments.
Previous Ontario Public Service (OPS) or other Canadian public-sector experience is an asset.
Knowledge of OPS QA standards and practices is preferred.

Soft Skills

Excellent written and verbal communication skills.
Strong analytical and systematic problem-solving abilities.
Excellent interpersonal and teamwork skills.
Ability to collaborate effectively with functional and technical teams.
Ability to manage aggressive timelines and changing priorities.
Strong organizational skills with a demonstrated track record of meeting deadlines.

Important Submission Details

Apply About employer

More about this job

Responsibilities

Develop and maintain test strategies, plans, cases, scripts, data, and reports, and execute functional, integration, regression, acceptance, performance, and end-to-end testing for enterprise applications. Manage defects, validate databases and data migrations, integrate automated tests into CI/CD pipelines, support UAT and cloud-hosted applications, and ensure accessibility, security, and quality standards are met.

Requirements

Requires 10+ years of enterprise software testing experience, hands-on expertise in manual and automated testing, and experience with Selenium or Postman, performance testing tools, databases, and Azure or AWS. Candidates should understand Agile/Scrum and Waterfall, SDLC and testing life cycles, test documentation, and defect management; AODA, security testing, and public-sector experience are preferred.

Skills

Manual Testing
Automated Testing
Test Strategy Development
Test Planning
API Testing
Performance Testing
Selenium
Postman
JMeter
SQL
Oracle
Azure
AWS
CI/CD Pipelines
Defect Management
AODA Accessibility Testing

Visa sponsorship

Not detected in the job text

Keywords

Enterprise Applications
Software Testing
Quality Assurance
Manual Testing
Automated Testing
Functional Testing
Integration Testing
System Testing
Regression Testing
User Acceptance Testing
Performance Testing
Load Testing
Stress Testing
API Testing
Selenium
Postman
JMeter
LoadRunner
SQL
Oracle
Azure
AWS
Azure DevOps
JIRA
ALM
Jenkins
Git
CI/CD
Agile
Scrum

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