In my experience, at two developers. You just have to hire a junior capable of significant growth and who starts out at some level above "helpless", which I'll

In my experience, at two developers. You just have to hire a junior capable of significant growth and who starts out at some level above "helpless", which I'll admit is hard. And of course be able to create small bits of work he can do on his own with a moderate amount of help. On the other hand, if the company is so overloaded that they really would like for you to put in 100 hours of real work a week.... And if they stick all the developers in an open office, forget about it.