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Senior QA SpecialistvTech Solution • Toronto, ON, Canada
Senior QA Specialist

Senior QA Specialist

vTech Solution • Toronto, ON, Canada
3 days ago
Job type
  • Full-time
  • Quick Apply
Job description
Job Summary:

The Senior Systems Testing/QA Specialist is responsible for leading and executing advanced performance testing and quality assurance activities focused on web-based applications and digital communication systems. This role involves designing scalable test frameworks, analyzing system performance bottlenecks, integrating testing into CI/CD pipelines, and mentoring junior QA engineers. The position supports initiatives aligned with digital health strategies and requires deep technical expertise in automation, cloud infrastructure, and performance monitoring tools.

Responsibilities:
  • Architect and scale modular, reusable JMeter test frameworks for complex workflows.
  • Design advanced load, stress, endurance, and failover test scenarios simulating peak production traffic.
  • Identify and analyze system bottlenecks, memory leaks, and thread contentions in distributed architectures.
  • Collaborate with developers and DevOps teams to recommend infrastructure scaling and code-level optimizations.
  • Integrate non-functional testing gates into CI/CD pipelines for continuous automated performance validation.
  • Mentor and establish best practices for performance testing among junior and mid-level QA engineers.
  • Plan and organize testing efforts for GUI and non-GUI systems, including integration, system, and user acceptance testing.
  • Develop and execute test plans, scripts, and cases; perform manual testing and debugging including complex SQL queries and ETL validation.
  • Prepare testing estimates, documentation, and reports aligned with quality assurance standards.
Required Skills & Certifications:
  • Bachelor's or master's degree in computer science or related technical discipline, or equivalent experience.
  • 5 to 7 years of IT experience, particularly in web-based applications and QA automation/performance testing, with 3+ years in senior or lead roles.
  • Expert-level proficiency with JMeter, including custom plugins, BeanShell/Groovy scripting, and distributed testing.
  • Strong experience with APM platforms such as Grafana, Dynatrace, or New Relic for diagnosing root causes.
  • Deep understanding of cloud infrastructure (AWS/Azure), microservices, caching layers (Redis/Memcached), and load balancers.
  • Advanced knowledge of SQL/NoSQL databases and skills to analyze slow-running queries under load.
  • Ability to read and understand backend code (Java, Python, Go, or .NET) to assist in debugging.
  • Experience designing, building, and maintaining automation test frameworks for UI, non-UI, and web services.
  • Strong written and oral communication skills for effective collaboration and documentation.
  • Ability to work independently and meet tight deadlines in a fast-paced environment.
Preferred Skills & Certifications:
  • Experience executing ETL Datastage jobs using UNIX shell scripts.
  • Technical proficiency in Siebel/CRM systems.
  • Basic knowledge of Unix/Linux operations including connectivity, navigation, and executing commands.
  • Public sector experience.
Special Considerations:
  • Hybrid work model requiring one day per week in the office.
  • Ability to adapt to changing priorities and respond to dynamic project needs.
  • Mentorship and leadership responsibilities for junior QA staff.
Scheduling:
  • Standard business hours with a hybrid schedule including one day per week onsite.
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Senior QA Specialist • Toronto, ON, Canada

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