Is a title of job proper name?

That's a great question! It depends on how you're using the word "title".

* If you're talking about the specific title of a job, like "Software Engineer" or "Chief Marketing Officer," then it's not a proper noun. These job titles are common nouns describing a role or position, not a specific person or place.

* However, if you're referring to a specific individual's job title, like "The CEO of Google," then it might be considered a proper noun. This is because you're specifically identifying a particular person with a title.

In general, it's best to capitalize job titles when they are used before a person's name or as part of a formal title. For example:

* Correct: "The CEO, Susan Wojcicki, spoke at the conference."

* Correct: "Chief Technology Officer John Smith is responsible for the company's innovation."

* Incorrect: "The company hired a software engineer."

Let me know if you have any other questions!