Tecsys Inc.

Software Developer – Test, Performance, Scalability

Tecsys Inc.

full-time

Posted on:

Location Type: Hybrid

Location: Montreal • Canada

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Tech Stack

AWSFluxJavaJMeterKubernetesPostgresPythonSOAP

About the role

  • Design and execute performance, load, stress, and endurance tests, and publish key metrics
  • Develop performance test plans and realistic load models based on WMS flows and operational patterns
  • Build and maintain reusable test assets with JMeter (APIs) and Playwright (UI flow validation when required)
  • Analyze bottlenecks at the application, PostgreSQL database, and Kubernetes/AWS infrastructure levels; lead root-cause analyses and formulate recommendations
  • Leverage logs, metrics, and APM tools (e.g., Datadog) to validate regressions and confirm improvements

Requirements

  • 5+ years of proven experience in performance and scalability testing / performance engineering
  • Strong ability to independently determine what to measure, how to execute tests, and how to interpret results
  • Deep knowledge of the supply chain domain and Warehouse Management Systems (WMS) (required) — understanding of warehouse operations and common workflow variations
  • Experience with enterprise applications in Kubernetes and cloud environments (preferably AWS)
  • Experience with tools such as JMeter, Playwright, and monitoring/APM tools (Datadog or equivalent)
  • Strong hands-on expertise with JMeter (test design, correlation, parameterization, data-driven execution, reporting and analysis)
  • Experience using Playwright for UI automation and validation of flows (smoke tests and critical paths)
  • Proficiency in Java for troubleshooting, testing, and understanding application behavior
  • Proficiency in Python for scripting, automation utilities, and analysis
  • Strong knowledge of PostgreSQL and performance investigation techniques (slow queries, locks/concurrency, indexing, connections)
  • Experience testing REST and SOAP services
  • Knowledge of Kubernetes and AWS concepts related to performance and scalability
  • Excellent communication and collaboration skills with multidisciplinary teams
  • Proactive, structured approach focused on problem-solving and root-cause analysis
  • Strong attention to detail; ability to manage multiple tasks and priorities
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
performance testingscalability testingperformance engineeringJMeterPlaywrightPostgreSQLJavaPythonREST servicesSOAP services
Soft Skills
communicationcollaborationproblem-solvingroot-cause analysisattention to detailtime management