A Browser Compatibility Developer ensures that a website or web application functions correctly across different web browsers. They conduct thorough testing to identify inconsistencies and bugs that may arise due to variations in browser software, versions, or settings. They use tools and strategies like cross-browser testing, responsive design, and progressive enhancement to maintain compatibility. They also stay updated with the latest web standards and technologies. Ultimately, their role is crucial to providing a smooth, uniform user experience on any browser, be it Chrome, Firefox, Safari, Edge, or others. They also troubleshoot and resolve any compatibility issues that arise.