Not when I didn't work there. I bought a bike from a guy who bought it from the shop I used to work at. He bought it before I worked there. He didn't buy it from "us" and "we" didn't sell it to him - I wasn't working there when he bought it. If his name was, for instance, Ryan Dunn, I might say:
Ryan Dunn bought a bike from the shop I worked at way before I was employed there. Then, he crashed it driving home from a bar.
See how that works? No we, no us. More of a them, they, it kind of statement.