I'm looking to build a solution that will track a page, then alert me when a certain keyword is added.

For example, track https://stackoverflow.com/jobs/companies and check once a day to see if "Google" is added to the page. It would make the most sense from a user's perspective for this to be a chrome extension.

It's a project I want to build and I'm a relatively new developer who has learned js/react so far. This will be my first project on my own. I'm trying to break it down by features/tasks and not sure how to do this part. Thank you!