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      Senior Backend Engineer Interview

      Sep 9, 2025
      Anonymous interview candidate
      No offer
      Neutral experience
      Average interview

      Application

      I applied online. The process took 2 weeks. I interviewed at Checkly in Aug 2025

      Interview

      1. Recruiter call (15 minutes very short screening call to make sure you are who you claim you are on the CV). 2. Hiring manager (Team lead) (45 minutes, 25 minutes question, the rest 20 minutes for you to ask questions). It was fair interview about previous experiences and situations. Nothing extra ordinary. 3. Take home challenge. Implement a feature they have on their roadmap using Nodejs. Write tests and explain your choices in a readme file. It should be hosted in a private repository in github shared with some members of checkly. 4. Interview with the hiring manager and a senior engineer. It should focus on tech skills, collaboration and on-call experience. The questions were generic and again many behavioral and situational questions. Only one question about the coding challenge which gave the impression that they didn't really take a deep look at the code and just picked up any shallow question they could find. 5. Interview with the CEO. I haven't made it to the offer stage due to lack of on-call experience that they didn't mention in their job offering and in any of their initial interviews. The feedback felt a bit shallow and only reflected a closed-mindset. From the way the interviewers asked and answered questions, I also had the impression this is not a fit for me either. So no bad feelings.

      Interview questions [2]

      Question 1

      Talk about a big project you lead that involved many teams and many technologies and in which you mentored others and had to convince stake holders and resolved hard conflicts and have changed the world and made a huge measurable impact.
      Answer question

      Question 2

      How does DNS work? How does DNS sync the data? What happens when you want to resolve an address using DNS?
      Answer question