Need freelancer fullstack BUDGET €250-750 EUR

I'm looking for an experienced full-stack freelancer with expertise in JavaScript to help me design a mobile application. This project needs to be completed in one week and my budget for the project is between € 350_1000 EUR. Familiarity with mobile application development and various mobile platforms such as Android, iOS, and Windows is essential. The desired outcome of this project is for the mobile application to be fully functional, aesthetically pleasing, and provide users with an intuitive experience.