With a wealth of experience and a proven track record of success in both Flutter and React Native projects, I believe I'm the best fit for your task. Over my career, I have developed and deployed numerous apps which have received great accolades for their seamless UI designs. This demonstrates my ability to fuse your existing backend Flutter web with a creative front end using Material Design principles to enhance your users' experience and increase their engagement with the application.
Beyond the technicalities, I appreciate that your website needs to be easily manageable. In response, I will ensure to create a separate page for you to post texts and announcements, which requires little or no coding skills from you. With my expertise in Backend Development (Node.js, [login to view URL], Firebase), database management (Firebase, MongoDB, MySQL), API integration (RESTful, GraphQL), among others, this won't be difficult to achieve. Additionally, I have a good understanding of subscription systems for unlocking access to restricted pages/sections and implementing payment APIs such as Stripe.