I was a phone interview, that took about 20 minutes long. Most of the time an interviewer spent talking about position and responsibilities, made sure I understand the role. Very polite and understanding. Asked a few very easy technical question about linux kernel, bash, and java, command line arguments, memory. Then he asked me if I had any questions, I asked about what language do they code onm he answered mainly java.

It was an phone interview. Called me directly on my phone number. The interviewer started talking about the role of the position and the duties invloved. Then it was just a technical interview based on the tehcnical skills required in the role. Interview lasted only 15 minutes.