Very simple, recommended by Alstom employee for interview, and half an hour general discussion and then only salary negotiation with HR.
However process is not clear and there is always ambiguity about the position they are offering so same need to be checked repeatedly.
I applied through college or university. The process took 1 day. I interviewed at ALSTOM (New Delhi)
Interview
A test followed by GD, tech Interview and an HR interview,
The process was a very conventional one went on smoothly.
Tech Interview was very simple.
HR, although few tricky questions were asked, went for about an hour