Can anyone read Chinese? Is this a good first name for a man 杰思?

Let me guess, your English name is "Jesse"?

杰 is a very common name for a man, but not 思. But if your name is Jesse and you're looking for a word that sounds like that, then 杰思 is alright.

I think "杰思" is good.
杰 outstanding
思 thought

no