"If this would be so, then my wife should leave Germany the next day she got this visa. She has the same text in the passport, but she does not have a job yet."
if she did not find a job yet, she could not possibly lose it -> those condition that i pointed out could not possibly come in effect
I will interpret the conditions so that it will be more clear ;) it is written:
Employment as IT-Specialist is allowed. The residence permit expires with completion of the abovementioned employment.
Situations:
1. Person does not have a job yet. The residence permit can not expire, because no employment can be lost when the person is unemployed.
2. Person has a job, changes it in a way that he will not be unemployed during the change. Then his employment as IT-specialist will not be lost, lost will be only employment for particular company -> the residence permit does not expire
3. Person loses a job and finds another one, in the meantime however will be unemployed. Then the residence permit expires, because his employment as IT-specialist was lost
i applaud your officials. they found a way to leave one thing - the one that is important for them and that they didn't want change despite all your knowledges and papers - in the way it was, still managed to persuade you that you have got what you wanted. and nobody can say that they did not follow the instructions that were outlined in the letter of BMI
Hint: if a person is not stupid, in such a case he will claim vs. any cancellation of the work contract. then their employment is lost only when the court of law confirms that, and the decision of court of law becomes final.
Hint Nr. 2: this argument could be brought to officials in the immigration office, to make them just do their job right. preferrably in written and with a tip that you will give your employer a copy of the letter, so that he will know who is responsible for the claim and for connected expenses. i guess it would be a much more effective mean than pointing out on different laws and paragraphs ;)