Performance & Scalability Specialist

Tecsys Inc.

. Design and execute performance, load, stress, scalability, and endurance tests .

Posted 10/8/2026full-timeMontreal • CanadaMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in performance engineering, including designing and executing various types of tests, troubleshooting performance issues, and utilizing tools like JMeter and Datadog. Proficient in cloud environments, particularly AWS and Kubernetes, with strong analytical skills for root cause analysis and performance optimization.

Highest-signal resume keywords

Performance EngineeringJMeterAWSKubernetesRoot Cause Analysis

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Performance TestingLoad TestingStress TestingScalability TestingJVM PerformancePostgreSQL TroubleshootingPython ScriptingDatabase Execution PlansTest Environment ConfigurationData Analysis

Soft Skills

Problem-SolvingAnalytical Thinking

Tools & Technologies

JMeterPlaywrightDatadogKubernetesAWSLinuxGit

Industry Keywords

Performance EngineeringSupply ChainHealthcarePharmacySREPlatform EngineeringBackend Development

Tech Stack

Tools & technologies

AWSCloudJavaJMeterKubernetesLinuxNode.jsPostgresPython

About the role

Key responsibilities & impact

Design and execute performance, load, stress, scalability, and endurance tests
Build realistic workload models and performance test plans
Investigate performance issues across Kubernetes, AWS, Java/JVM, application logs, and PostgreSQL
Build and maintain performance tests using JMeter and critical UI validations using Playwright
Analyze pod/node metrics, resource limits, autoscaling, JVM behavior, slow queries, execution plans, locks, and indexing
Use monitoring and APM tools such as Datadog to identify regressions and validate improvements
Create and troubleshoot test environments and large-scale test datasets
Work directly with developers to identify issues and verify fixes
Use Python for scripting, automation, and analysis
Independently determine the source of unexplained performance issues and drive investigations through root cause

Requirements

What you’ll need

5+ years of hands-on performance or scalability engineering experience
Recent experience testing applications in cloud and Kubernetes environments
Strong hands-on experience with JMeter
Experience with Playwright and APM/monitoring tools such as Datadog
Practical knowledge of AWS, Kubernetes, JVM performance, and PostgreSQL troubleshooting
Experience reviewing database execution plans and investigating slow queries
Comfortable with Linux, Git, Python, and modern IDEs
Able to independently configure and troubleshoot test environments and data
Strong problem-solving and root-cause analysis skills
Experience with WMS, supply chain, healthcare, pharmacy, SRE, platform engineering, or backend development is an asset
Must be a Canadian Citizen, Permanent Resident of Canada, or have a valid Canadian work permit

Benefits

Comp & perks

Digital-first work environment
Freedom and flexibility to work in the most productive way
Conveniently located offices and collaborative workspaces
Accommodation available for applicants selected for an interview