After you pass the human filter (HR), you are given a coding challenge in your language of choice as your first technical filter. You can't use IDEs on your technical challenge, so I would recommend you pick a language/platform you can code without code completion.

I qualified at a level below the requirement (in their terms, level 4; I was more of a level 3) for the position, so I chose to quit the interview process. I would have had to repeat the first technical interview for a lesser experience role.

If you pass, you get to the other interview chain, which is the actual interview process from what I hear, as the first one is just to see if you can code.

I was given a coding challenge, but I'm not allowed to share the specific subject. This is beyond the point, as they are testing for approach, how I write code, how I think, and how I structure my time.