A Django developer can implement WhatsApp notifications with templates using the Twilio WhatsApp API, requiring a Twilio account, smartphone, WhatsApp account, Python 3, and basic knowledge of Python and Django. The process involves setting up a virtual environment, installing necessary packages, creating a Django project, configuring settings for the Twilio account, choosing an approved WhatsApp message template, creating a Django view to send WhatsApp messages, adding a Django HTML template, and adding a URL pattern for the Django view. A sample application is provided to demonstrate how to implement this process.