I recently developed a responsive e-commerce platform using React for the frontend and Node.js with Express for the backend. The project involved integrating payment gateways, managing user authentication, and optimizing the site for performance. I also utilized MongoDB for the database to handle dynamic content and ensure scalability.

I prioritize security by implementing best practices such as input validation, using HTTPS, and employing secure authentication methods like OAuth. I also conduct regular code reviews and security audits to identify and mitigate potential vulnerabilities. Additionally, I stay updated with the latest security trends and apply patches promptly.

I focus on optimizing performance by minimizing HTTP requests, leveraging browser caching, and optimizing images. I also use tools like Webpack for bundling and minification to reduce load times. Additionally, I ensure efficient database queries and implement lazy loading for content to enhance user experience.

I address cross-browser compatibility by testing the application on multiple browsers and versions using tools like BrowserStack. I also use feature detection and polyfills to ensure consistent functionality across different environments. Regular testing and debugging help in identifying and resolving any discrepancies.

I have extensive experience with Git, using it for version control and collaboration. I manage code collaboration by creating feature branches for each task, conducting code reviews, and merging changes through pull requests. This workflow ensures that the codebase remains organized and that all team members are aligned with the project's progress.