You have to log in on your website and find the position, which you are interested in. Then fill in their application and wait until someone from HR will you call. You will be invited for interview at the company. You had better prepared very well about yourself and information about company. If you are successful they will call you in 2-3 weeks to invite you for an interview with a manager. It will probably be in English and will talk again about yourself and about your motivation, why you want to work there. In my experience it will be in very friendly atmosphere.

My whole application process in SAP took about a month till I got a job offer. The set of interviews were informative and I was briefed properly with the Job Description and with the overall environment of the Company.