The interview process began with an initial phone conversation with the recruiter. This was followed by a phone interview with a leader and a technical phone interview.

The final stage was a full day of on-site interviews that covered various technical and non-technical topics, including a coding exercise on the whiteboard.

The recruiter did an excellent job of ensuring I was well-prepared regarding what to expect. I didn't feel there were any attempts to "trick" or "surprise" me; the focus was on making sure I was set up to be comfortable. It felt like they genuinely wanted me to be successful.

With very little detailed information, how would you approach tackling a performance problem in a web application? Step through your thought process of what steps you would take and what information you would seek.