Your future job is in Baden-Württemberg, but you are not? You might not even yet live in Germany? In that case, the following advices are helpful to you.
First of all, you will have to look for somewhere to live. Afterwards you probably need to open a bank account, to conclude a mobile phone or internet contract or to attend a language course. The Welcome Center is there for your help. They support newcomers from abroad to find their way in Baden-Württemberg.
Look at the following map which Welcome Center is responsible for you! Some Welcome Centers even give you counsel via Skype before your arrival in the German Southwest.