add phone notification capability to my pwa-enabled site

Hello, my name is Nikita and I full-stack developer from Ukraine (UTC +3). I want to take your project because I have a lot of experience in web site development. I can build a work plan after you give more info. I can do a test job for you, which should be paid after you accept me as a freelancer for the whole project. But I won't take a project for long term partnerships. I can make a report each day about current progress. Regards.