Web for the management and administration of phone lines with WhatsApp Web service

I am looking for a web developer to create a platform for the management and administration of phone lines with WhatsApp Web service. The ideal candidate will have experience with the following:

Features:
- Message scheduling and automation
- Phone lines management and segmentation
- Analytics and reporting

Platform Preference:
- Other open-source platforms

Mobile Responsiveness:
- The project needs to be mobile responsive.