Google Extension Designer

We need an expert designer who is able to design google extensions. You have to expert on google extension design. We wanted to design our extension the same as the reference google extension below-

Here is the reference extension that we want to design-
https://chrome.google.com/webstore/detail/lusha-easily-find-b2b-con/mcebeofpilippmndlpcghpmghcljajna?hl=fr

Only apply if you are truly an expert and designed Google extensions before.