WhatsApp Auto-Reminder SaaS Development

I need a skilled developer to create a WhatsApp Auto-Reminder System tailored for small businesses like salons, gyms, tutors, and freelancers.

Key features should include:
- Automated reminder messages
- Customizable message templates
- User-friendly dashboard for managing reminders
- Integration with WhatsApp Business API

Ideal skills and experience:
- SaaS development expertise
- Experience with WhatsApp API integration
- Strong backend development skills
- Familiarity with UI/UX design principles

Create a simple, stable SaaS that:
Sends automated WhatsApp reminders (appointments, payments, renewals)
Works on complete autopilot once configured
Includes a clean onboarding flow + dashboard like Shopify
Has recurring billing & a 7-day trial
Please provide detailed project proposals.

Target - Niche,"Local Service Businesses in India (Salons, Gyms, Coaches, Tuition Centers)."
Pain Point Solved,No-Shows & Late Payments (which cost them immediate revenue).
The Promise,Reduce No-Shows by up to 80% and automate payment follow-ups using the platform clients already check every hour (WhatsApp).
The Product Type,"Configuration-as-a-Service (CaaS). The customer sets the rules, and the system runs itself forever."