The interview was about 2 hours, including a test with mathematical questions and electrical problems. To be honest, the test was very difficult for knowledge of Associate degree graduate. The job requires a two-year degree. But the interview written test includes knowledge of four-year degree. Other than that, the interview questions were ok. The HR person and manager were friendly. They walk you and introduce you to their worker the same day of the interview once they determine you are the right person.