のがうまい

be good at

→ の
phrase Uncommon #14,745
be good at Follows a verb in its plain form to say that someone is skilled at doing something. うまい is an informal equivalent of 上手い in this usage.
JA: 妹は人の名前を覚えるのがうまい。
EN: My sister is good at remembering people's names.

彼は実に話すのがうまい

He's really good at speaking.

彼は言い訳を考え出すのがうまい

He's good at coming up with excuses.

彼はこういうのがうまいのです

He’s good at this kind of thing.

彼はご飯を作るのがうまい

He’s good at cooking.

彼女は子供を扱うのがうまい

She’s good with children.

トム君はメアリーよりフランス語を喋るのがうまいと言った

Tom said that you speak French better than Mary does.

彼は歌を歌うのがうまい

He is good at singing.

彼は時流に乗るのがうまい

He's good at keeping up with the times.