Firstly a small discussion by phone. And the main part on premises that took about an hour. Mainly technical discussion. It was recorded. Most questions felt fairly general with a couple of ones more specific on technical issues.
I applied online. I interviewed at Plaisio (Thessaloníki, Western Macedonia) in Oct 2020
Interview
Nice and quick but not so technically oriented. Mainly focused on academic experiences. Nevertheless the lady that was responsible for the interview was kind and polite. I was nervous before and she helped me relax.