Multilingual Crypto Payment Gateway Development

I need a website and mobile application that supports English, Arabic, and Russian languages for a payment solutions gateway. The platform should accept cryptocurrency payments.

Key Requirements:
- Develop mobile applications for both iOS and Android platforms.
- Create comprehensive user interfaces, including Admin, User, and Merchant interfaces.
- Enable cryptocurrency payments, specifically Bitcoin, Ethereum, and Litecoin...etc

Ideal Skills and Experience:
- Proficiency in developing multilingual websites and mobile applications.
- Experience with cryptocurrency payment integration.
- Strong skills in creating intuitive and secure user interfaces for different user roles.