They basically asked a couple of questions of the type of tech I was familiar with. The internship didn't require any great experience, even though they were very specific in the job description. The interview was ran by the HR and the Backend Team Leader.

First Interview was a normal talk to know the candidate, second interview is a technical test (not very hard but time consuming) and the third is a technical interview. They are rude. They didn't bother to tell me who they were and what was their role. They just jumped into the questions. Normally the interviewer talks a bit about themselves/company/potential role to make the candidate more at ease. I felt I was under fire of tricky questions. One of the worst interviews I have ever had. The interviewers don't seem to be prepared in advance - they won't read your CV, just a few notes. Third interview phase guys seemed to have bad hygiene. Please don't be so arrogant in future interviews.