have been around the block
To have experience, either in a particular area or in one's life overall. Yes, the new hire is young, but she's been around the block. She was managing a whole department at a prominent PR firm before she came here. Your aunt might seem boring these days, but she's been around the block—she went to Woodstock as a teenager!
have been around the ˈblock (a few times)
(informal) have a lot of experience: She’s been around the block a few times and can’t be fooled that easily.