I had two phone interviews that required me to log in to a website so they could work through a problem with me.

The first interview felt like it went horribly. They had me code something fairly basic, and it seemed like the biggest part of the process was making sure a candidate could ask the right questions because the premise was very vague.

The second interview seemed more straightforward, but they didn't proceed with me, so I'm not sure where I messed up.

The first interview question was: "How would you write the embedded software for a microwave, or something along those lines?" They provided two or three requirements for what it had to be able to do.