* As part of a formal title:
* "Chief Engineer"
* "Software Engineer"
* "Civil Engineer"
* "Project Engineer"
* As part of a proper noun:
* "The Society of Professional Engineers"
* "The National Academy of Engineering"
* At the beginning of a sentence:
* "Engineers are highly skilled professionals."
* In a specific context where it is treated as a proper noun:
* "He's the Engineer, not the architect." (in a specific company or project)
You don't capitalize "engineer" when it is used:
* As a general term:
* "She's a great engineer."
* "They need an engineer to fix the problem."
Remember, the key is to determine if the word is being used as a specific title or proper noun, or if it's a generic description.