The entire interview process is remote, and my point of contact was HR. They discuss with one of their developers to assign a development task and give you a few days to complete the task and mail them the code. They don't give much info on the task they assign you, so that can be hard but not impossible.

One sad thing, though, is that they don't tell you why they rejected you if they do.

I was given the task of creating a REPL version of a Wikipedia reader to be written with Node.js. They give you a few days to complete the task.

They don't guide you with details on where to find the Wikipedia APIs for the task or how to use them. This was the difficulty I faced, as Wikipedia's documentation is really not pleasant and confusing to read through.