Senior JavaScript Mobile App Developer

We are seeking a senior-level mobile app programmer with extensive JavaScript experience in developing user interfaces using React.js. The app will be developed for both iOS and Android platforms. Ideal candidates should have a strong background in JavaScript, with particular emphasis on React.js. Experience with PHP and Python is a plus, but the primary focus will be on React. The ability to create intuitive, seamless user interfaces will be key. As this project is aimed at the Spanish-speaking market, developers from South America who are fluent in Spanish are preferred. Prior experience in developing similar features in mobile apps is highly valued. Please share your portfolio of relevant mobile apps you've developed, as well as any experience you have in programming for the key features outlined above. The developer will collaborate with our design team on the app's design. The expected timeline for the project is 3–6 months.