User specific information

I am trying to add a users name and job description automatically to a field on a card.

I can add the users name easily but don't know how to add the job description, which will be specific to the user, as an addendum to the field or even another field.

I have thought about adding the job description to the users name but we use the users name in other workflow where I don't wish this information to appear.

Any ideas?

Cheers

Russ