Senior Performance Testing Engineer

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Senior Performance Testing Engineer in Canada

Cognizant
Full time
Email

Canada
09/20/2026
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Toronto

Responsibilities

Design, build, and execute performance, load, stress, endurance, and soak tests for enterprise applications.
Create workload models and performance test scenarios using JMeter.
Monitor application performance, system resources, databases, servers, and end-to-end transaction flows using Dynatrace and other APM tools.
Analyze test results and metrics to diagnose bottlenecks, memory leaks, latency issues, and throughput constraints.
Perform root cause analysis and provide actionable recommendations to architecture and development teams.
Develop custom code and virtual services with Mountebank to enhance testing and remove backend or third-party dependencies.
Integrate performance testing scripts and monitoring checks into deployment pipelines for continuous performance validation.
Participate in Agile ceremonies and continuous performance improvement initiatives.

Requirements

At least 8 years of hands-on performance testing and engineering experience using JMeter and APM tools.
At least 4 years of experience with Apache JMeter.
Proficiency in scripting and developing custom code for performance testing scripts and scenarios.
Strong knowledge of non-functional requirements gathering, workload modeling, and performance root cause analysis.
Experience with Azure, Docker, ECS, Kubernetes, MySQL, Java, Python, and Splunk or comparable technologies.
Strong Linux fundamentals and experience diagnosing system utilization.
Experience with large-scale distributed systems and large data volumes.
Strong analytical and problem-solving skills.
Experience developing virtual services using Mountebank.
Preferred experience with Chaos Engineering, observability, SRE transition work, or the banking domain.

Benefits

Base salary of CAD 75,000–95,000 per year, plus eligibility for a discretionary annual performance-based bonus and wellbeing benefits.
Hybrid work arrangement requiring four days per week in a client or Cognizant office in Toronto, Ontario.
Wellbeing programs supporting physical, mental, and financial health.

Cognizant

Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value. We build full-stack AI solutions powered by deep industry, process and engineering expertise — embedding an organization's unique context into technology system...

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