No defined interview process. You enter in a room with a couple of engineers, some of whom may even be from another discipline. Some of them are engineers you will not work with. Some of them are not experienced in the job you applied.
Difference of C++ and Java.
The following metrics were computed from 13 interview experiences for the Siemens Software Engineer role in Turkey.
Siemens's interview process for their Software Engineer roles in Turkey is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Siemens's Software Engineer interview process in Turkey.