、。
He's good at this kind of thing.
Literal
He [topic-は], this-kind-of-thing [subject-が] skilled [copula-のです].
こういうの ('this kind of thing') is the casual demonstrative. うまい ('skilled, good at') is the colloquial form of 上手. のです adds an explanatory nuance — 'the thing is, he's good at this.' A minimal, everyday assessment of someone's ability.