Some examples of "quality engineering practices" would be in my mind:

- Believes most business logic doesn't belong in models/controllers

- Understands the importance of naming things (classes, variables, etc.) well

- Writes tests, even if not fully TDD

- Intelligently applies SOLID engineering principles

^^ this type of thing.

I think the books "Code Complete" [0] and "Practical Object-Oriented Design: An Agile Primer Using Ruby" [1] embody a lot of what I'm looking for, if you're familiar with them.

[0] https://www.amazon.com/Code-Complete-Practical-Handbook-Cons...

[1] https://www.poodr.com/

Edit: Formatting