1- I was walking home from the coffe shop. I have a job bussing tables there.
What does the marked phrase mean? I look it up in a dictionary and it says that "a job doing something" means "to have difficulties doing something". But ıt doesn't work here I think.
Extra question : About use of participle in those sentences.
2- I work at the coffee shop bussing tables.
I think the second one okay to me. My interperation is something like that for the use of participle:
Bussing tables is part of working at the coffe shop.". In the process of working at the coffe shop, I am bussing the tables.
But I can't understand the use of the participle in the first sentence. ( I have a job bussing tables there.)