Demoriel Purnell
Quality Assurance Engineer @Bai
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WORK HISTORY
Quality Assurance Engineer @Bai
Chicago, IL, US
Lead test automation efforts using Cypress (JavaScript/TypeScript) and Playwright to validate UI functionality, styling, and API integrations across multiple complex applications.• Integrated AI prompting techniques with Microsoft Copilot and advanced LLMs to accelerate automation script development, reduce test maintenance, and improve coverage.• Designed, executed, and maintained automated and manual test suites for UI, API, and styling validation, including CSS verification across browsers (Chrome, Edge, Firefox).• Performed API testing and validation using Postman, Swagger, GraphQL, and browser DevTools; utilized fixture files and intercepts to mock and verify API response data.• Managed CI/CD pipelines with GitHub Actions to streamline automated test execution and ensure reliable deployment verification.• Collaborated closely with developers, product owners, and QA peers in Agile ceremonies—contributing to story grooming, acceptance criteria definition, and sprint planning.• Conducted regression, smoke, and sanity testing post-release, ensuring software stability and quality across build and deployment cycles.• Provided technical insights and QA leadership across three enterprise-level applications, balancing manual and automated approaches to achieve consistent, high-quality releases.
EDUCATION
Northeastern Illinois University
Bachelor of Arts (BA), Sociology
Illinois Valley Community College
Associate of Arts (A.A.), General Studies
FORTE Knowledge Group
Certified QA Analyst, Information Technology
SKILLS
ABOUT DEMORIEL PURNELL
I’m a QA Automation Engineer with over 7 years of experience ensuring software quality across web, mobile, and client-server applications.I specialize in developing scalable automation frameworks using Cypress and Playwright, while integrating AI prompting techniques through Microsoft Copilot and Large Language Models (LLMs) to accelerate test creation, expand coverage, and improve code quality.Beyond traditional QA, I focus on AI and LLM testing — validating model outputs, verifying prompt accuracy, assessing reasoning across edge cases, and ensuring consistent, ethical model performance. I use prompt evaluation frameworks to test and refine generative AI behavior against defined quality standards.My experience also includes API testing, UI validation, and database testing using Microsoft SQL Server Management Studio. I manage the full QA lifecycle — from pull requests and code reviews to CI/CD pipelines in Azure DevOps — ensuring seamless integration and deployment in fast-paced Agile environments.I’m passionate about blending technical precision with clear communication to deliver high-quality, intelligent testing solutions that drive reliability, efficiency, and confidence in every release.
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