ThousandEyes Software Engineer interview questions

First, I had a short call with a recruiter. Next, they sent me a coding challenge with a few written questions. The coding challenge was very simple, only 15 minutes long. The questions were also pretty basic (e.g. why do you want to work here? what is your greatest strength? what is the biggest technical challenge you've solved?). I completed it, and was told I wasn't moving onto the next round. I found this extremely bizarre since they had the easiest coding question (write a function to generate the fibonacci sequence), and it's the only coding challenge I haven't passed. I have had no issues passing other more difficult challenges for companies like Dropbox, Asana, etc. I don't understand what they're looking for. I asked for feedback, but the recruiter coldly responded saying: "Sorry, we get too many candidates to give individual feedback." If I dedicated 45 minutes of my time to your company, you should at least spend 5 minutes giving me some feedback... especially when your process seems to weed out the wrong candidates.

The recruiter was friendly and responded timely, but the process was terrible. I was asked to implement a coding challenge called Periodical Tasks Scheduler in C++ in a week. During that time, I had to prepare my finals at the same time. Actually the challenge took me 3 or 4 days in total. I implemented all the requirements they asked, but I was declined after a week even without a reason. DO NOT TAKE the coding challenge without a guarantee of an interview, it is a total waste of time !!!