Application Performance Engineer – K6, JMeter & LoadRunner

Senior Performance Engineer Location: Toronto, ON
Work Model: Hybrid (4 Days Work From Office)
Primary Skills
K6
Grafana
LoadRunner
JMeter
Playwright
Selenium 3.0/2.0
UFT
QTP
Rest Assured / Java
Role Description We are seeking an experienced Senior Performance Engineer with strong expertise in performance engineering, resiliency testing, disaster recovery testing, performance monitoring, and root cause analysis. The ideal candidate will possess extensive hands‑on experience with modern performance testing tools, application monitoring platforms, and enterprise‑scale systems.
Essential Skills 10+ years of hands‑on experience with:
LoadRunner
JMeter
Experience with:
K6
Grafana
Playwright
Selenium 3.0/2.0
UFT
QTP
Rest Assured
Java
Hands‑on experience in Resiliency Testing
Hands‑on experience in Disaster Recovery Testing
Strong experience with databases and writing SQL queries
Proficiency in:
Java
JavaScript
Experience with Application Performance Monitoring (APM) and observability tools, including:
Dynatrace
Splunk
Elastic
Grafana Dashboards
Experience working with:
MQ
Kafka
Postman
Strong exposure to:
Performance Engineering
Root Cause Analysis
Performance Reporting
Preferred Skills Banking domain experience
Knowledge of payment processing systems and transaction types, including:
SWIFT
ACH
Wire Transfers
Responsibilities
Design, develop, and execute performance testing strategies and test plans
Conduct load, stress, endurance, resiliency, and disaster recovery testing
Analyze application and infrastructure performance bottlenecks
Perform root cause analysis and provide performance improvement recommendations
Develop and maintain performance test scripts using LoadRunner, JMeter, K6, and related tools
Monitor application behavior using APM and observability platforms
Validate system performance, scalability, availability, and reliability
Collaborate with development, infrastructure, and business teams to resolve performance issues
Generate detailed performance reports and present findings to stakeholders
Support enterprise applications and critical business systems through performance engineering best practices
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