What jobs are there at McDonalds?

There are several:

Fry duty (beginners)

Presenting (handing out the food in drive-thru)

Drive-thru (taking orders and handling money)

Front Counter (taking orders and giving the lobby customers their food)

Custodian

Grill (cooking all the meat)

Line duty (puts together the burgers, nuggets and other food)

Runner (person who places the food in the bags for drive thru or front counter)

Those are the basic jobs at McDonalds that I've seen/taken part in during the time I worked there in high school.