I am an expert chrome extension developer, and i am damn sure that i can give you best.
Here are some of the extensions i have built for freelancer clients
1. HFPM Extension - This is to show notification for new message even if the browser is closed for a hacking forum.
2. B2B Scrapper - This is an extension for a B2B portal scrapping, which is a private extension.
3. Bing Auto Search Bot - This extension is used for automating bing search for rewards points earning.
4. Bing Rewards AI Bot - This extension is for fully automating the bing rewards point earning, like playing quizzes automatically while the user is not doing anything.
Let me know when we can start the project. Pay only after work is done.