Inexperienced engineers aren't the problem. Juniors will submit spaghetti code messes, but those can be cleaned up without too much trouble. The real problem

Inexperienced engineers aren't the problem. Juniors will submit spaghetti code messes, but those can be cleaned up without too much trouble. The real problem is incompetent people higher up that can make large scale architecture and design decisions. e.g. somewhere I used to work there was a VP that decided to hand roll an ORM instead of just using Django.