Multifunctional Language Learning App Development

I'm looking to develop a basic, yet sophisticated language learning app that caters to both iOS and Android users. This app will have a feature that allows for the uploading of study materials in the form of PDFs and Images. I want to incorporate various AI tools to help in the learning process. Here are some of the key functionalities I'm looking for:

- The ability for users to upload PDFs and Images as study materials. This should be user-friendly and intuitive for a seamless learning experience.
- Integration of speech recognition to assess user pronunciation and comprehension.
- Writing analysis tool which can provide feedback on written exercises.
- AI-driven quiz generation for an interactive and engaging learning process.

The ideal candidate for this project should have experience in the following areas:
- Proficient in app development for both iOS and Android.
- Skilled in integrating AI tools, particularly in language learning apps.
- Strong understanding of user experience design and creating intuitive interfaces.
- Familiarity with incorporating PDF and Image upload features in an app.
- Ability to implement various AI features including speech recognition, writing analysis, and quiz generation.