My father is a network engineer, and has more or less been working in the same company for over 30 years now. He started as a radio technician out of high schoo

My father is a network engineer, and has more or less been working in the same company for over 30 years now. He started as a radio technician out of high school, and transitioned into internet networking in the early 90's. Technically, he's worked for several different companies. For a while he was working for a different company, but doing exactly the same work, with the same people, in the same building. I don't think it will be easy to replace network engineers like him, who have been doing the job literally as long as the consumer internet has existed.