Instructure interview questions

I applied online and within a day got an email from a recruiter. The first call was a quick 20 minute conversation with a recruiter to discuss my experience and describe the role. We also discussed salary requirements, benefits, etc. I really appreciated the openness early in the conversation. Next, the recruiter scheduled a 1-hour video interview with Senior / Lead engineers. This was a tough interview where you had to identify an algorithm for looking through a binary tree and determine the path with the largest sum. You have to understand Depth-First Search to figure this one out. You then have to code the answer in a shared online editor (collabedit.com) A day later, I got an email from the recruiter letting me know that I did well on the video interview, and was given a coding exercise to complete: write a library (in any language) for importing student and course information from a CSV, handling cases where the CSV headers were malformed. I ended up writing a full web-app that used the library and wrote unit tests and integration tests for both the library and web app. The exercise took a few hours to complete - about 4 hours in total. The next step was a series of in-person interviews with SET Leads, Test Manager and SVP of Engineering. I flew in to Salt Lake City and had a full day of interviews (including lunch with the team). Their recruiting coordinator setup all the flight details. The main office is located about 20 minutes from Salt Lake City Airport. The interviews were technical requiring you to write code on whiteboard. Overall, the questions were moderately difficult - requiring you to understand data structures and algorithms.