I know of someone who has ranked #1 for the keyword "seo expert + city"
I can pm if you want specifics.
Profile is pretty standard, the actual keyword phrase is only on the page twice, and the url of the page is actually just his company name. Couple of images on the profile which are tagged with the keyword.
Searching the linkedin link on google throws up some random stuff, including a bunch of forum profiles where the link is on a forum profile.