If your new hire is doing all the creating, then yes, it's your job to make sure their job is as easy as possible and they are as effective as they can be. But

If your new hire is doing all the creating, then yes, it's your job to make sure their job is as easy as possible and they are as effective as they can be. But this example is a little absurd. Manager wouldn't be the correct term for the founder in your example since they would be filling myriad roles beyond manager, just like the first hire would be filling myriad roles beyond "software engineer".