"Bible of design" might be a bit excessive. It's a good design 101 book. Definitely longer than it should be, and kind of fumbles the explanation of "affordances", which the author had to clarify later. It's representative of "design thinking" as a historically well-situated concept in design, but that's not necessarily a good thing in itself.

It really depends what you're looking for. If you want something deeper, more abstract, I would recommend going straight to something like Notes on the Synthesis of Form by Christopher Alexander, which I think typically appeals to the more abstraction-oriented part of the mind of engineers. If you want to get more actionable, practical day to day recipes, Refactoring UI as suggested somewhere else in the thread is a decent suggestion.