Senior QA Tester

Wirehead; Toronto; Hybrid; CAD 80,000 - 100,000; Full time

Job summary

A leading technology firm in Toronto is seeking a Senior QA Tester for a 12-month contract. The candidate will be responsible for testing web and mobile applications, ensuring compliance with standards such as AODA and WCAG 2.1. The position requires over 10 years of experience and proficiency in automated testing tools like Selenium and Cypress. The role supports a hybrid work model.

Qualifications

• Must have at least 10 years of experience in QA roles.
• Proficient in automated testing for web and mobile applications.
• Experience with AODA / WCAG 2.1 compliance standards.

Responsibilities

• Collaborate with multidisciplinary teams for effective QA.
• Execute comprehensive testing on web and mobile applications.
• Manage defects from identification to resolution.

Skills

Experience testing web / mobile applications

Proficiency in automated testing tools

10+ years of experience as a QA

Experience testing AI / ML-enabled applications

Ability to validate AI-assisted user workflows

Experience working within an Agile environment

Tools

Selenium

Cypress

Playwright

SQL

Excel

MLFlow

Job description

Overview

Role: Senior QA Tester

Client: Government, Broader Public Sector

Job Type: Contract

Term: 12 Months

Workplace Type: Hybrid / Onsite

Pay Rate: CA$60.00 - CA$70.00 per hour

Location: Toronto, ON

Clearance: N / A

ATS ID #: 9644

Company: Wirehead

Project and Digital Experience

• Working in Agile, Scrum, and DevOps environments.
• Collaborating with multidisciplinary teams including developers, designers, AI engineers, product managers and business SMEs.
• Planning and executing comprehensive testing activities throughout iterative Agile sprints, executing continuous validation, and ensuring accessibility and compliance standards across evolving product increments.
• Using structured workflow and collaboration tools for managing defects throughout their lifecycle — from identification and logging, through prioritization and triage, to resolution, verification, and closure.
• Working with user stories, analyzing business and technical requirements, and generating test data requests.
• Applying deep understanding of WCAG 2.1 success criteria (Levels A, AA, AAA), including principles, success criteria and techniques.

Technical Skills

• Hands-on experience testing web and mobile applications.
• Proficiency in automated testing tools (e.g., Selenium, Cypress, Playwright).
• Knowledge of AODA compliance testing and tools (e.g., JAWS, VoiceOver, Axe, Accessibility Insights, WAVE).
• Experience with CI / CD pipelines and version control systems (e.g., Git, Azure DevOps).
• Understanding of image processing and biometric data integrity.

Testing Skills

• Extensive experience in manual and automated testing across functional, non-functional, and integration layers.
• Skilled in using data query tools (e.g., SQL, Excel) to support test case development.
• Experience supporting and executing User Acceptance Testing (UAT).
• Strong grasp of QA principles, tools, and structured methodologies.
• Proven ability to create and manage test strategies, test plans, test cases, and reusable test scripts.
• Experience with unit testing, load testing, performance testing, and other specialized testing types.
• Ability to develop modular testing frameworks for scalable and reusable components.

AI Skills and Experience

• Experience testing AI / ML-enabled applications
• Understanding of AI model behavior, including edge cases and bias detection.
• Ability to validate AI-assisted user workflows and ensure biometric integrity.
• Familiarity with AI explainability as well as AI transparency principles.
• Experience with AI testing tools and frameworks (e.g., MLFlow, TensorBoard).
• Collaboration with AI engineers to define testable model requirements and performance benchmarks.

Must Haves

• Experience testing on web / mobile applications
• 10+ years of experience as a QA
• Proficiency in automated testing tools (e.g., Selenium, Cypress, Playwright)
• Experience testing AI / ML-enabled applications
• Familiarity with AI explainability as well as AI transparency principles
• Ability to validate AI-assisted user workflows and ensure biometric integrity
• Experience working within an Agile environment - DevOps
• Applying deep understanding of AODA / WCAG 2.1 success criteria (Levels A, AA, AAA), including principles, success criteria and techniques

Nice to have

• Understanding / Experience with AI testing tools and frameworks (e.g., MLFlow, TensorBoard)
• Understanding of AI model behavior, including edge cases and bias detection

How to apply

Patrick Marsan is hiring for this position.

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Job details

Seniority level: Mid-Senior level

Employment type: Contract

Job function: Information Technology and Quality Assurance

Industries: IT Services and IT Consulting