Senior SDET

Quick Facts

Role: Senior SDET focused on UI test automation, reliability, and front-end performance testing.

Description

You will design and extend UI test automation frameworks and end-to-end browser test suites, with substantial hands-on Playwright experience. The role includes backend checks within UI scenarios, reliable CI execution, and front-end performance testing with profiling, diagnosis, and enforced performance budgets. You’ll also work with test reporting and traceability and build isolated test environments using containers and cloud infrastructure.

Responsibilities

• Design, implement, and significantly extend a shared UI test automation framework
• Develop and maintain reliable Playwright-based UI tests (migration from Cypress/Selenium is acceptable)
• Use Python for test tooling (e.g., pytest) and contribute to the shared framework
• Handle data setup, run backend validations inside UI scenarios, and support test tooling
• Test React applications with complex data grids (e.g., AG Grid), dynamic forms, and heavy client-side state
• Mock REST and WebSocket traffic in the browser and test authentication flows
• Run front-end performance testing: profiling and diagnosing long tasks, layout thrashing, and memory leaks
• Define and enforce performance budgets in CI
• Implement CI/CD pipelines (Azure DevOps preferred) with Git and reliable test execution practices
• Build isolated test environments on Linux and Docker; use AWS services and infrastructure as code
• Reduce flaky tests via deterministic waits, controlled retries, and triage
• Provide reporting and traceability using Playwright reports, Allure, and/or related tools
• Maintain clear documentation and communicate effectively

Benefits

Benefits are not specified in the provided posting.

Requirements

• 5+ years of UI test automation experience, including designing or significantly extending a framework
• Strong TypeScript/JavaScript and Node.js skills with substantial hands-on Playwright experience
• Working Python skills (pytest and/or Playwright for Python) for test tooling and shared framework contributions
• Experience testing React apps with complex data grids (e.g., AG Grid) and dynamic forms with heavy client-side state
• Experience mocking browser network traffic (REST and WebSocket) and testing authentication flows
• Front-end performance testing experience using Chrome DevTools Performance and Memory, Lighthouse, and performance APIs
• Ability to diagnose long tasks, layout thrashing, and memory leaks and set/enforce performance budgets in CI
• CI/CD experience with Azure DevOps (preferred) or Jenkins/GitHub Actions; proficiency with Git
• Experience building isolated test environments: Linux command line/shell scripting, Docker and Docker Compose
• AWS experience with EC2/ECS/EKS, S3, IAM, VPC, and CloudWatch
• Infrastructure as code with Terraform, CloudFormation, or CDK
• Reliability practices: isolated tests, deterministic waits instead of sleeps, controlled retries, and flaky test triage
• Test reporting and traceability experience (Playwright reports, Allure, Azure Test Plans, TestRail)
• Clear communication and strong documentation skills