There are 2 round of interviews with different management, and the candidates need to finish some assessments in order to move forward. After 2 rounds, they will notify you if you get the job.
I applied online. I interviewed at Aztera (Tucson, AZ) in Sept 2013
Interview
Relaxed, easy going people. gave tour around and explained some of the projects. Like solar, health, involvement with the University, etc. Talked with CEO, Director of Engineering, and some of the Software development team.