Python Encryption Developer Needed

Need a Python developer to implement secure communication API between servers. The solution should use RSA-2048 for key exchange and AES-256-CBC with a changing IV for message encryption. Binary protocols: reading the C#-style binary data in Python (struct) over WebSockets. Asynchronous Python (asyncio, httpx, websockets), Please share relevant experience with secure Python-based encryption and similar cross-platform communication projects.