"Who is" and "who has" = "who's" Since those 2 terms are so much more common than whose, I notice more people using "who's" to mean "whose" also, probably because they sound the same and who's looks better so it's naturally written out in place of whose easily. I figure another decade and "whose" will join other middle english words in antiquity.
That sentence doesn't make sense to me. With some modification it's still awkward. Whose is possessive. So it can't be "whose the friend." You can say "who is the friend ..." And the contraction of "who's the friend ..." But then you still need a word between friend and made. Such as "that" or "who." And then I still take issue with "made the job" which is not common and without context is awkward. But ... This reply of mine is all about English, not Esperanto. So I'll shuddup now.