Usage of "[Name] of [Company]"

I believe I've heard a phrase such as

Steven Stevenson of Microsoft

or

Kylie Kyleson of StackExchange

How frequent is it to refer to someone in this way, or in other words, does it sound too pretentious, or is it a valid way to add credentials?

Solution 1:

Yes, this is a valid way to refer to a person.

However, it implies that the company name in question is sufficiently well-known, and is also relevant to establishing their credentials for the topic under discussion.

So, if we were discussing Active Directory, then referring to someone as "Joe Bloggs of Microsoft" gives weight to their opinion; but "Sid Smith of Starbucks" is probably pointless.