I applied online. I interviewed at ALSTOM (Bengaluru) in Jan 2017
Interview
2 technical round and 1 managerial round fully on ADA and RTRT.
Oops concepts should be known thoroughly.
Good to know any of the scripting language, which will impress the manager.
Later there will be an technical round for 1.5 hrs with verification and validation questions wrt RTRT.