network IT support website

I am looking for a freelancer to assist with server configuration and maintenance for my network IT support website. This will be a one-time project and the freelancer will have full access to my system.

Specific services needed:
- Server configuration and maintenance for the network IT support website
I am looking for a freelancer to help me develop a system or app that will integrate a SIP extension with WhatsApp. This system will provide voice communication for one-to-one calls, between two users, not for group calls. The extension will enable secure voice calls between users of different messaging platforms, so that I can continue to have conversations with my contacts on SIP while also using WhatsApp. for example like this website
https://www.sip-for-whats.app/