Worst engineer's nightmare would be if you're hired, delivered the "working website with 100 of different calculators", and someone like myself needs "just to code review it" and "make sure all corner cases are covered and stuff like that", and "provide constructive feedback" (that would be copy-pasted later on to AI), but mostly "this work is 99.9% complete". And you "can't understand why such a simple code review takes so much time, because everything just works for me".