Cloud QA Engineer

ZTR•London, ON

About The Position

Join us in Advancing the Environmental Global Impact within the Rail Industry. For nearly 40 years, ZTR has designed, developed and released products that have a positive environmental impact within the Locomotive Industry. Planning for an environmentally sustainable future means taking action today in preparation for tomorrow. Everyone has a role to play and we take ours seriously. As the Cloud QA Engineer, you will be working to ensure the quality and reliability of our cloud-native applications in AWS cloud environments. The successful candidate will ideally have experience in testing in IoT-enabled systems and/or AWS IoT services in order to ensure our API testing, UI validation and test automation in Playwright is optimized.

Requirements

5+ years of experience in QA Engineering / Test Automation
Strong experience testing applications deployed on AWS
Solid understanding of API testing concepts (REST, HTTP methods, status codes, JSON)
Hands‑on automation experience using Playwright (UI and API)
Good proficiency in JavaScript or TypeScript
Working knowledge of Python for API testing, data validation, and test utilities
Experienced with AWS services
Familiarity with CI/CD pipelines in cloud environments
Experienced using Git and modern development workflows
Strong debugging, problem-solving, and communication skills

Nice To Haves

Working experience with AWS IoT Core, IoT Devices or sensor-based platforms
Expertise in event-driven architectures (SNS, SQS, Lambda triggers)
Understanding of performance, security, and resilience testing
Experience with test data management and environment configuration in cloud setups.

Responsibilities

Develop and execute test strategies, test plans, and test cases for AWS‑hosted applications
Perform comprehensive API testing for cloud services (functional, regression, integration, end to end tests and negative tests)
Conduct thorough UI validations across browsers and devices
Design, develop, and maintain automation frameworks using Playwright
Validate end‑to‑end workflows involving UI, APIs, and AWS backend services
Integrate automated test suites into CI/CD pipelines (AWS CodePipeline, GitHub Actions, Jenkins, etc.)
Validate deployments on AWS environments including DEV, QA, and PROD
Monitor and analyze test results, log defects, and collaborate closely with developers and DevOps teams
Ensure test coverage for high availability, scalability, and fault tolerance in AWS
Validate IoT data flows, device communication, and cloud ingestion pipelines