Years ago, I definitely was one of those people who completely bombed a code-on-a-whiteboard problem. It was exactly that - a nested for loop problem. It was on

Years ago, I definitely was one of those people who completely bombed a code-on-a-whiteboard problem. It was exactly that - a nested for loop problem. It was one of the first real interviews as I was in a new geographic area and previously I had moved into jobs by being recruited by my professional network. This was before I started specifically studying the patterns used for engineering interviews. Thing is, I still had a good 3-4 years of professional experience with stellar reviews, some hackathon wins, on top of having coded throughout my entire life prior. But when I was up on that whiteboard, I pretty much froze for that entire segment. Whiteboards are just a different skill and if you don't regularly code on them at work, you better buy one and practice at home because using an editor does _not_ translate to coding on a whiteboard. I'm glad you mention this: "Obviously, you can improve the experience - let them bring their own laptop and code on it, no problem", because I did better in interviews that followed which allowed for coding in my usual working environment. Heck, I even passed a technical screen before this company brought me on-site where I live-coded some elevator problem they asked me to implement. After bombing the whiteboard, I wouldn't blame them if they thought I had paid someone else to solve the tech screen.