Coupa Software Inc Software Engineer interview experience

He didn’t spend much time introducing the company or the role; instead, we went straight into technical questions. The topics spanned the lifecycle of an HTTP request and covered JavaScript, Ruby, and Rails.

Some of it felt straightforward because it was framed as basic full-stack web development knowledge, but JavaScript wasn’t my strongest area, and I struggled there enough to feel like I underperformed. There was also a question that stuck with me because it sounded oddly specific: which is faster between getElementById and getElementByClassName, and why. It was one of those details