The recruiter interview was alright and easy. The interview with the Lead Solution Engineer was technical and a joke. You can't teach personality but you can teach the skill. The Lead looks for really in-depth "book" knowledge, wanting you to explain the backend how the process works. I don't think it was really needed, I've worked with customers/vendors and they will explain their infrastructure/needs, as long as the network is working from point A to point B, you can really add any IoT devices to it.

The process from first interview to offer took about a month and a half. They did communicate with me at all times even though there were some delays. Overall the interviews in my opinion were fun and a good challenge. They did also pay for accommodations for the in person interview which was out of town for me.