Comment by lenerdenator

You're going to have to do the unthinkable:

Invest in the training of your junior employees.

The cost of generating code is now laughable, so that's not the economic value brought to the table by a junior engineer, or really, any engineer. The value is now generated by knowing what code is good code. You're going to have to have talks, book clubs, hackathons, and the like to get your juniors to know what good code is. Do they know what design patterns are? How about good architecture? If they can't name a few design patterns, you're not investing enough.