I have extensive experience with automated testing frameworks such as Selenium and JUnit. In my previous role, I developed and maintained a suite of automated tests that significantly reduced the time required for regression testing. I also integrated these tests into the CI/CD pipeline, ensuring that any new code changes were automatically validated before deployment.

I prioritize testing tasks based on their impact and urgency, often using tools like JIRA to track and manage my workload. I ensure that high-risk areas are tested first, followed by features that are nearing their release date. Regular communication with the development team helps me stay updated on any changes that might affect my testing priorities.

To ensure comprehensive test coverage, I start by thoroughly understanding the requirements and then create a detailed test plan. I use techniques like boundary value analysis, equivalence partitioning, and decision table testing to identify test cases. Additionally, I regularly review and update the test cases to account for any changes in the system.

When a critical bug is found post-deployment, my first step is to quickly assess the impact and prioritize a fix. I collaborate closely with the development team to understand the root cause and develop a patch. Simultaneously, I ensure that all stakeholders are informed about the issue and the steps being taken to resolve it.

In a previous project, I encountered a scenario where a new feature was causing significant performance issues. To resolve this, I conducted a thorough performance testing using tools like JMeter. I identified the bottlenecks and worked with the development team to optimize the code. This not only resolved the performance issues but also improved the overall system stability.