It was easy. I was just caught off guard with the call. Wasn't prepared enough to make an impression I believe. They asked about my projects and if I was willing to relocate. There wasn't any tough question but they wanted to know if I can answer anything about block diagrams and PID controller if I were to be interviewed in-person. No technical questions on the phone interview. They told me to wait two weeks for another call to set-up an in-person interview but I never received it. It's been 4 weeks, and at this point, I am a bit discouraged. However, my online job submission still says "Submission Under Review". I will update if something comes up.

Was introduced as behavioral but was fairly technical. Asked a few technical questions about subjects of your choice. Discussed past experiences from my resume and what I would do in other technical scenarios.