If you have no project to work on - be prepared to sit on your chair and do nothing or just do non sense tasks. Project management is mostly - non-expert in the area that they are responsible for. So, as you can guess - no adequate leadership will be presented.
Also, Siemens can get new projects only from business units, not from external companies, so there is a large possibility to sit without project for a long time.
So if you are talented, have a lot of energy and ambitions - be prepared to find another job when your project is over. And another thing - don't expect fast raise it salary or position. 10%/year raise is normal here.