One challenging bug I encountered was a memory leak in a web application. The application would crash after prolonged use. I used tools like Chrome DevTools and memory profiling to identify the issue. After isolating the problem, I discovered that a JavaScript function was creating multiple event listeners without removing them. I refactored the code to ensure listeners were properly removed, which resolved the memory leak and stabilized the application.

When faced with tight deadlines, I prioritize tasks based on risk assessment. I focus on testing critical functionalities first, such as user authentication and payment processing, as these are crucial for the application's core functionality. I also consider the impact of bugs on the user experience and the likelihood of their occurrence. By using a risk-based approach, I ensure that the most critical issues are addressed first, minimizing the impact on the overall project timeline.

To ensure comprehensive test coverage, I follow a structured approach. I start by creating detailed test plans that outline all the functionalities to be tested. I then use techniques like boundary value analysis, equivalence partitioning, and decision table testing to cover various scenarios. Additionally, I leverage automated testing tools for regression testing and continuous integration to catch issues early. Regular reviews and updates to the test cases based on feedback and changes in requirements also help maintain thorough coverage.

Effective communication is key when reporting bugs to developers. I ensure that my bug reports are clear, concise, and include all necessary details such as steps to reproduce, expected and actual results, and any relevant screenshots or logs. I also prioritize the severity and impact of the bug. When discussing the issue with developers, I remain collaborative and open to their insights, aiming to work together to resolve the bug efficiently. This approach fosters a positive working relationship and helps in quickly addressing issues.

I have extensive experience with automated testing tools and frameworks such as Selenium, JUnit, and TestNG. I have used Selenium for automating web application tests, including end-to-end testing and regression testing. JUnit and TestNG have been my go-to frameworks for unit testing in Java-based projects. I have also integrated these tools with CI/CD pipelines to ensure continuous testing. My experience includes writing and maintaining test scripts, setting up test environments, and analyzing test results to identify and resolve issues.