ThousandEyes Frontend Engineer Interview Questions
& Process

HR reached out on LinkedIn and we scheduled a first call. This initial call was pretty basic, covering my experience and a quick company overview. After that, I got a coding challenge: build a map of San Francisco vehicles with live updates using d3js and a frontend framework (I used React). I submitted the code and a few days later, the recruiter said they liked it and wanted to move to the final stage. The last part was a 3-hour live coding session on Skype with three engineers. It was all coding, unrelated to the previous challenge. They asked me to code an algorithm for array combinations, then an LRU cache with specific needs and tests, and finally a recursive tree reduction function.

A recruiter reached out to me at the end of July 2015. The interview process had 4 steps: first, I answered some screening questions. Then, I had a week to complete a code challenge where I had to build a small AngularJs application using d3.js. It took me a while because I wasn't very familiar with d3.js, but I had mentioned this upfront and they were fine with it, wanting to see how I'd approach a new technology. After that, I had a one-hour informal chat with the CTO to get acquainted. Finally, I met with other team members and the CTO for a three-hour technical interview. The team did a good job making me feel comfortable throughout. I struggled with a couple of questions, but they helped me figure out the answers.

I was reached by a recruiter, then asked to implement a home exercise. Then I was invited for an inhouse which consisted of 3 parts: - 1h: Pair programming on a couple of problems - 1h: Pair programming on changes to the home exercise code - 1h: Algorithmic question. Overall all the communication was very professional, the interviewers were very polite and warm and the office is actually really cool (they have a super-hero culture with each team member selecting a hero, and with super hero theme items all over the office)