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Saurabh DantaniFull Stack Developer
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Full StackCal.com & Google Calendar

Appointment Booking System

Multi-tenant appointment scheduling platform for clinics, salons, and service businesses. Features calendar management, automated reminders, online payments, staff scheduling, and customer self-service portal. Built with clean modular architecture, rigorous automated testing, and comprehensive logging. Designed from the ground up for high reliability, security, and lightning-fast user interactions.

Source Code
Appointment Booking System - Full Stack Architecture & Implementation
The Challenge

Consultants and healthcare clinics lost revenue from client no-shows and time zone scheduling conflicts.

The Solution

Architected automated booking system with two-way Google Calendar synchronization, time zone detection, and automated SMS reminders.

The Impact

Reduced missed appointments by 70% and eliminated back-and-forth scheduling emails.

Technologies & Tools

React.jsNode.jsExpress.jsMongoDBTwilioStripeTailwind CSS

Key Engineering Challenges

1Preventing double booking when appointments are added directly on external Google calendars
2Accurately handling multi-timezone daylight saving transitions
3Configuring customizable buffer times, vacation dates, and recurring weekly availability
4Integrating Stripe deposits to confirm high-value appointment slots

Results & Measurable Outcomes

Decreased client no-show rate from 24% to under 7%
Saved service providers an average of 6 hours per week in calendar coordination
Handled 2,000+ monthly bookings seamlessly
Automated pre-appointment intake forms and Zoom link distribution
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