Hybrid Software Developer – Test, Performance, Scalability

at Tecsys Inc.

• Job title: Software Developer – Test, Performance, Scalability
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: AWS, Flux, Java, JMeter, Kubernetes, Postgres, Python, SOAP
• Location requirements: Hybrid, Montreal, Canada

About the role

• Performance Analyst focusing on performance testing and scalability for supply chain software at Tecsys. Engaging with technology and logistics to enhance performance metrics.

Responsibilities

• 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