Md Zarin T.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

QA Engineer with 6+ years testing SaaS platforms, AI products, and compliance-critical systems -- manual testing, test automation (Selenium, Cypress, Playwright), and AI agent evaluation. I build test coverage that catches regressions before they ship, not after. Top Rated on Upwork, with a background spanning web and mobile applications, API testing, database testing, performance testing, and CI/CD pipeline integration. WHAT I DO → Manual Testing -- detailed test case design, exploratory testing, and clear, reproducible bug reports → Test Automation -- building maintainable automation suites in Selenium, Cypress, or Playwright → API Testing -- Postman, REST Assured, contract and integration testing → Database Testing -- SQL-based data integrity, consistency, and retrieval validation → Performance Testing -- JMeter-based load and responsiveness testing → CI/CD Integration -- wiring automated tests into Jenkins, GitHub Actions, GitLab CI pipelines → Regression Testing -- both manual and automated, to catch issues before every release → Mobile Testing -- manual and Appium-based automation for iOS and Android TOOLS: Selenium, Cypress, Playwright, Appium, Postman, REST Assured, JMeter, Jenkins, GitHub Actions, GitLab CI, Reflect.run, JIRA, TestRail, Asana, Linear, Confluence, Slack HOW I WORK Not every project needs automation on day one -- I'll tell you honestly whether manual testing, automation, or a mix is the right fit for where your product actually is, then build test coverage that catches regressions before they ship. Have a project that needs solid QA coverage, manual or automated? Send the details and I'll tell you exactly how I'd approach it.