QA Automation Engineer | Playwright Framework Lead

Machine Learning Technologies, LLC; Chicago (IL); On-site; USD 88,000 - 125,000; Full time

Job summary

Machine Learning Technologies, LLC in Chicago, IL is seeking a QA Automation Engineer to develop end-to-end UI automation covering critical workflows across Chromium, Firefox, and WebKit. Build resilient Playwright-based tests, reusable fixtures, and API test automation to validate service layers.

You will implement network interception, manage authentication states, and ensure robust test design within an Agile team for a 10-month engagement.

Qualifications

• Bachelor’s degree in computer science, engineering, or related field.
• 3–6 years of hands-on test automation experience, including 2+ years with Playwright building and maintaining production automation frameworks.
• Demonstrated experience architecting automation frameworks from scratch — not just writing scripts in an existing one.
• Solid understanding of Playwright core concepts: locators, auto-waiting, fixtures, projects, parallelism, retries, tracing, and configuration.
• Proficiency with API testing — REST, JSON payloads, status code and schema validation (Playwright request, Postman, or REST Assured).
• Hands-on CI/CD integration experience with at least one of GitHub Actions, Jenkins, Azure DevOps, or GitLab CI.
• Strong Git skills — branching, pull requests, merge conflict resolution, code review participation.
• Working SQL knowledge for test data setup and backend validation.
• Solid grasp of QA fundamentals: test design techniques, boundary and equivalence analysis, risk-based testing, defect lifecycle.
• Experience working in Agile/Scrum teams with sprint-based delivery.
• Strong debugging and root cause analysis skills; ability to investigate failures across UI, API, and data layers.
• Clear written and verbal communication — able to explain quality risk to non-technical stakeholders.

Responsibilities

• Develop end-to-end UI automation suites covering critical business workflows, regression scenarios, and smoke tests across Chromium, Firefox, and WebKit.
• Write resilient locators using Playwright's role-based and test-id strategies, leveraging auto-waiting and web-first assertions to eliminate hard waits and reduce flakiness.
• Build reusable fixtures, custom commands, and test utilities; manage authentication state via storageState to avoid redundant login flows.
• Implement API test automation using Playwright's request fixture for service-layer validation and test data setup/teardown.
• Implement network interception and mocking (page.route) to isolate the UI from unstable downstream dependencies and to test error and edge-case states.

Skills

Automation framework design

Debugging

Communication

Agile/Scrum

Test design techniques

Education

Bachelor's degree in CS/Engineering

Tools

Playwright

REST API testing

GitHub Actions

CI/CD tools

SQL

Job description

Machine Learning Technologies, LLC in Chicago, IL is seeking a QA Automation Engineer to develop end-to-end UI automation covering critical workflows across Chromium, Firefox, and WebKit. Build resilient Playwright-based tests, reusable fixtures, and API test automation to validate service layers.

You will implement network interception, manage authentication states, and ensure robust test design within an Agile team for a 10-month engagement.