Here are the CodeBuild selections of must-read software engineering books. Books are grouped according to their content with some description.
These Robert C. Martin and Gang of Four books are very fundamental OOP resources for every software engineer.
These Steve McConnell, Robert C. Martin and Joshua Bloch books are very helpful with increasing your coding skills.
Refactoring and patterns are very important issues of OOP, which brings quality and maintainability. These Martin Fowler and Joshua Kerievsky books are maybe the best references about this issue.
Andrew Hunt's and David Thomas's "pragmatic" approach to programming brings very important viewpoints to software engineering.
There are many project management books in the market but Frederick P. Brooks Jr. and Tom DeMarco presents very impressive important viewpoints to project management.