Translation of Vertriebsleiter

I want to work on the country specific terms first, then do a revision of the words that we have entered so far... please give me a few days to finish it. However, I may need to contact you over the weekend, depending on my progress.
The differences between Italian and Spanish are very small. But I see that you speak Spanish better than I speak English. It is still far from perfect, but that is already a start.
I wanted to know more about your job offer and if I have a chance to get it. And if my application is accepted, I would like to know more about the duration of the project. I believe in it very much.