I am looking for an expert programmer to help solve a difficult situation.

The interviews so far have been surprisingly disappointing. The best candidate so far is a very experienced programmer who has never used version control software.

The problem in itself might not be too serious because it is something which can be learned in a short time.

But there is a deeper aspect, which worries me:

How is it possible to actively develop software for 10-15 years without ever needing version control?

Is the fact itself of not looking for a solution to the problem of tracking changes a sign of a wrong attitude to programming?