Simpatico to me means attractive/hot/goodlooking im afraid if i say this it will cause a workplace harrassment case lol
The Spanish Dictionary / Translator app tells me that simpático can be translated to English as: Adjective: sympathetic , friendly , nice , likeable , charming , pleasant , lovely , congenial , genial , decent
Where did you get your ideas?
No, because 'bien' is an adverb meaning 'well'. You could say 'un buen jefe' though.
I rather think "nice" is too bland to truly translate as "simpático."
"Kind" is about what the person does, but simpático is more about how the person appears to you.
Since the form of the verb already tells us who is doing the action, Spanish prefers dropping its subject pronouns.
How about: I have a cool boss?
Or: My boss is really something.
Or maybe: That dude! He is way out there!
Simpático is more in the corner of "likable". Yours would rather be translated as "Tengo un jefe que [me, nos] apoya."
Simpático means something like "likable". "Sympathetic" means "showing pity".