What bothers me about posts like this is: mid-level engineers are not tasked with atomic, greenfield projects. If all an engineer did all day was build apps from scratch, with no expectation that others may come along and extend, build on top of, or depend on, then sure, Opus 4.5 could replace them. The hard thing about engineering is not "building a thing that works", its building it the right way, in an easily unde…
But... you can ask! Ask claude to use encapsulation, or to write the equivalent of interfaces in the language you using, and to map out dependencies and duplicate features, or to maintain a dictionary of component responsibilities. AI coding is a multiplier of writing speed but doesn't excuse planning out and mapping out features. You can have reasonably engineered code if you get models to stick to well designed mod…
Which is why it's so great for prototyping, because it can create something during the planning, when you haven't planned out quite what you want yet.