Take a look at this terrific WED Enterprises recruitment ad from 1980. As mentioned in the copy, over a billion dollars was being funneled into massive Imagineering parks projects in Florida, California and Tokyo, which necessitated the hiring of many (what we might call today) Entertainment Designers.
What was going on at Disneyland specifically during this time? As described in great detail at Imagineering Disney, planning and design of the new Fantasyland (1983) was likely in full swing, with Big Thunder Mountain Railroad and Space Mountain before it having been recently completed.
Many of the original “Worked for Walt” Imagineers were still with WED at the time as well. What a cool time this would have been to become an Imagineer!