What are some examples of UX engineering heuristics?

Noting that UX engineering is a fairly expansive term, I'll contextualize this to UX engineering as it relates to component prototyping and development, UI architecture, and maintenance.

What kind of heuristics might a UX engineer promote to more effectively evaluate their components?

It seems logical to channel some of the many well-documented UX design heuristics like consistency and use of standards, but what might be some UX Engineering specific heuristics which can compliment these?