Translation of fire fighter in German

I am sorry that I did not respond to your last email you sooner. Have you been busy with your work? Do you have any meetings or travel planned? I have friends around the world and they call me Mike.
I am learning Spanish in university but I also have to improve it for private reasons. Do you have any suggestions. It is giving me a hard time lately as it is difficult. I need to be very patient.
A little information about me: I am 33 years old and my wife Anna and I have 3 children. We live near Dortmund. I work as a train driver in the Deutsche Bundesbahn. Do you know Germany?