Web and Mobile App Development with React & React Native

Project Description:
We are seeking an experienced developer to build a web app using React.js and a mobile app using React Native. The goal is to create a seamless experience across both desktop and mobile platforms, with the web app being responsive and the mobile app functioning well on both iOS and Android.

The project will involve implementing user authentication (OAuth or custom login), real-time data updates, and push notifications for mobile devices. We need someone who is familiar with state management using Redux, as well as integrating with a backend (Node.js or API service) for CRUD operations.

The final deliverables should include a fully functional React.js web app, a React Native mobile app for iOS and Android, and complete code documentation. The project should also be tested and ready for deployment.

The expected budget for this project is between $250 - $750, and we are looking for someone who can complete the work in about 3-5 weeks. If you’re interested, please share your relevant experience and links to previous projects you've worked on.