I have extensive experience with React, having used it in multiple projects. I've built dynamic user interfaces, managed state with Redux, and optimized performance through code-splitting and lazy loading. My experience with Angular includes developing modular components, utilizing RxJS for reactive programming, and ensuring cross-browser compatibility.

I start by isolating the issue using browser developer tools to inspect network requests, console logs, and performance metrics. I then use version control to revert to previous stable states if necessary. For more complex issues, I employ debugging techniques like breakpoints and step-by-step execution. I also collaborate with QA teams to replicate issues in a controlled environment.

I focus on optimizing code by minimizing HTTP requests, leveraging browser caching, and compressing assets. I also use performance monitoring tools to identify bottlenecks. For scalability, I design modular, reusable components and use cloud services like AWS or Azure for load balancing and auto-scaling. Regular performance testing and code reviews are integral parts of my workflow.

I regularly attend webinars, read industry blogs, and participate in online forums like Stack Overflow and GitHub. I also follow influential developers on social media and subscribe to newsletters that cover emerging technologies. Additionally, I engage in continuous learning through online courses and certifications to stay ahead of the curve.

One challenging project involved integrating a legacy system with a modern web application. I faced issues with API compatibility and data synchronization. I overcame these by creating middleware to translate data formats and using asynchronous programming to handle real-time updates. I also collaborated closely with the backend team to ensure seamless integration.