Many companies now invent their own proficiency exams. We do.
Medical graduates work in a specific setting under supervision for a period after extensive education. I don't think the conditions of their work are ideal, but many people make it through without burn out.
Although technologies are changing, there are some things that transcend technology. Concepts about like documentation, naming, decomposition, components, interfaces, concurrency, locking, algorithm efficiency, many considerations of user experience.