They don't read your profile at first. Sometimes they don't even read it at all before contacting you.
They search for keywords, and rely on the search algorithm prioritisation and a good looking one-line summary of your profile to pick you out of pages of search results.
They'll find your "IDA Pro" if that's in the list of terms they are looking for, no matter how deeply it's buried in the description of your past jobs. If they don't read your profile they might not even know that it's buried.
