Very few things will pay as well in the long run. Top level sys admins/Dev-ops. He will have to write a lot scripts, at least until he makes it to management.

Very few things will pay as well in the long run. Top level sys admins/Dev-ops. He will have to write a lot scripts, at least until he makes it to management. If he is good at math and enjoys it he can become a data scientist. Business Analyst/Product Management is another route. Technical writer is another option if he is good at writing.