I developed a web-based inventory management system for a retail company. The main challenge was integrating multiple APIs for real-time data updates from suppliers. I resolved this by implementing a robust error-handling mechanism and using asynchronous programming to ensure smooth data flow. Additionally, ensuring the system's scalability was crucial, so I utilized a microservices architecture to distribute the load efficiently.

I prioritize security by following best practices such as input validation, using secure coding standards, and regularly updating dependencies to patch vulnerabilities. I also implement role-based access control to limit user permissions and conduct regular security audits. Additionally, I educate my team on the importance of security and encourage them to report any potential risks.

I have extensive experience with Git, using it for branching, merging, and resolving conflicts. In team environments, I advocate for feature branching to isolate changes and facilitate code reviews. I also use pull requests to ensure that code is reviewed before merging into the main branch. This approach helps maintain code quality and collaboration among team members.

I start by isolating the issue using logging and monitoring tools to identify the root cause. I then use debugging techniques such as breakpoints and step-through execution to trace the code flow. For larger systems, I leverage distributed tracing and profiling tools to pinpoint performance bottlenecks. I also collaborate with other team members to gather insights and ensure a comprehensive solution.

I focus on optimizing database queries, reducing server response times, and minimizing client-side rendering. I use tools like SQL Profiler and caching mechanisms to improve query performance. For server-side optimization, I implement load balancing and use asynchronous processing. On the client side, I minimize JavaScript and CSS files, leverage browser caching, and optimize images to enhance load times.