Hello
I understand that you need an experienced developer to develop a backend for multiple agents to login and reply to messages coming through your Whatsapp business account.
I have expertise in the development of chatbot with backend systems for websites and social media channels including Facebook, WhatsApp, Telegram, Line etc. using technologies like DialogFlow, NodeJS, PHP, Python, HTML, Mysql, etc. and can help you with your requirements.
Let's discuss your requirements in detail over chat.
Thanks
Rahul