Tecsys Inc.

Software Developer in Test, Performance and Scalability

Tecsys Inc.

full-time

Posted on:

Location Type: Hybrid

Location: Montreal • Canada

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Tech Stack

AWSCloudJavaJMeterKubernetesPostgresPythonSOAP

About the role

  • Design and execute performance, load, stress, and endurance tests and publish key metrics.
  • Develop performance test plans and realistic workload models based on WMS workflows and operational patterns.
  • Build and maintain reusable test assets using JMeter (API) and Playwright (UI workflow validation when required).
  • Analyze performance bottlenecks across application, PostgreSQL database, and Kubernetes/AWS infrastructure; drive root-cause analysis and recommendations.
  • Leverage logs/metrics/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, and how to interpret performance results.
  • Strong Supply Chain / WMS domain knowledge (required)—understanding warehouse operations and common workflow variations.
  • Experience working with enterprise applications in Kubernetes and cloud environments (AWS preferred).
  • 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, and reporting/analysis).
  • Experience with Playwright for automating/validating UI workflows (sanity and critical flows).
  • 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 approaches (slow queries, locks/contention, indexing, connections).
  • Experience testing REST and SOAP services.
  • Familiarity with Kubernetes and AWS concepts relevant to performance and scalability.
  • Strong communication and collaboration skills with cross-functional teams.
  • Proactive, structured problem-solving and root-cause mindset.
  • Detail-oriented; able 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 analysisdetail-orientedtime managementindependent decision-makinganalytical thinkingproactive mindsetorganizational skills