Initial contact through LinkedIn, then via email to setup a phone interview. The interview was postponed by Alten 3 times before it went ahead, and the case study document I filled in was lost so I had to send it again. For something so basic as organising a phone interview it was remarkably poor.
The interviewer couldn't answer any of my questions satisfactorily & I had no confidence that I would have a meaningful career at Alten.
A second interview was offered but I declined