CRM with Multiple Users and API Ping Post -- 3

I need to build a software which supports my clients and connects them with my employees, I am looking for people having strong skills in Python, Node.js, My SQL or MS SQL building a CRM based web application with Data base Management
The software Includes API Ping post, Multiple user access, Voip/SIP call, Subtitles display, Artificial Intelligence and Machine Learning.
I need a Person/Freelancer who resides in Tamil Nadu India.