Hello,
I went through your project description posted here. I am a front-end web developer with expertise in building web-applications and browser extensions (chrome/Firefox). In my past work experience, I have developed many chrome extensions and web-application using front-end web technologies like Javascript-based MVC frameworks (Backbone.js, React.js), and i have sound knowledge of HTML5, CSS3, Ajax and Javascript.
I definitely believe I can get this extension built for you with a nice UI for the extension and showing desktop notifications to user about relevant coupons available.
Hope we can discuss further about how we want this extension to work.
Thank you