What is a word to describe a person who takes pride in their work?

A person who takes pride in their work could be described as ____?

I'm editing a report and the person used the word "prideful" which sounds too much like "arrogant", but can't for the life of me think of another word (besides "proud" which also has a connotation of arrogance).

It needs to be a single adjective to fit the format of the report I'm editing.