CoreLink is a collaborative project management web app. As QA Automation Engineer, I wrote the test plan with a traceability matrix and Gherkin (BDD) scenarios. I automated E2E UI tests with Selenium WebDriver and Cucumber, tested REST APIs with Postman, and wrote JUnit 5/Mockito unit tests for the Spring Boot backend. I tracked defects in Jira/X-ray and ran regression tests. I built a Jenkins CI/CD pipeline with SonarQube, Snyk and Docker Compose deployment, so every change is automatically tested before release.