Startup
NDA

Zero-Downtime Transition: Launching a Booking System on Live Magento

Rebuilding Magento for a High-Growth Hot Springs Chain

Rebuilding Magento for a High-Growth Hot Springs Chain

9M

first-year online sales

30%

reduce failed payments

2wks

seamless API migration w/o data loss

Business environment

Saunas and hot springs are becoming the hottest social wellness spaces across American cities. As Vogue noted, there's a "gold rush" mentality surrounding small sauna businesses right now.

The numbers speak for themselves:

  • Global Sauna Market: Projected to reach $195 billion by 2029 (Fit Insider).
  • US Sauna Market: Forecast to increase by $151.3 million at a CAGR of 6.4% between 2024 and 2029 (Technavio).
  • Thermal Spa Bookings: Up 157%, with TripAdvisor identifying immersive water experiences as a top wellness travel trend for 2025.

This revival of a wellness ritual proven across cultures for centuries begs the question: Why now, in 2025? Regrettably, stress might be a major driver of this trend. The post-pandemic world has left many feeling isolated and disconnected. People crave socialization, a renewed connection to their bodies, a renewed connection to their community - and wellness spaces like saunas offer exactly that.

Project brief

Our client, WorldSprings, distinguishes itself with a unique offering: over 40 mineral-rich hot springs, authentic saunas, and cold plunges – all designed to promote stress relief, improve sleep, and foster social connection.

With the above-mentioned trends converging, Worldsprings recognized the moment to accelerate its expansion strategy. This involved both physical growth – establishing localized hot spring ventures and expanding locations – and digital enhancement. The goal was to provide a stress-free, seamless booking and scheduling customer experience. (After all, if the digital side of a relaxation business is puzzling and unnerving, what's the point?)

The project's core objective was to build a dynamic, scalable booking system on Magento – a platform originally designed for ecommerce.

Services

Development
Migration
Integration

Tech

Magento 2
Microsoft Dynamics 365
SOAP API
Square
REST API
PHP
JavaScript
KnockoutJS
RequireJS
Grunt
Less
Figma
Jira
Confluence
GitHub
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Rebuilding Magento for a High-Growth Hot Springs Chain

challenge

While Magento offers extensive customization capabilities, its core architecture is designed for ecommerce, not real-time service booking. WorldSprings needed to transform its existing Magento platform into a seamless and scalable booking engine to support its growing business. Grinteq took on the following challenges:

1. Core Platform Adaptation:

  • Ecommerce vs. Booking Logic: The primary challenge was adapting Magento's fundamental order logic to handle bookings instead of product purchases. 
  • Real-Time Functionality: The system needed to support time-slot management - a departure from Magento's standard asynchronous order processing.

2. Complex Integrations and Data Migration:

  • ERP/CRM Integration: Developing a custom API to synchronize with Microsoft Dynamics 365 (a complex ERP/CRM ecosystem) for managing customer data and business operations.
  • Payment Gateway Pivot: Migrating to Square Payments under a tight two-week deadline added significant complexity and required rapid adaptation.
  • Data Preservation: Blending data from the existing Magento platform and Microsoft 365 setup while preserving client data and ensuring seamless payment gateway integration.

3. Maintaining Uptime and Scalability:

  • Live Website Modifications: All development and modifications had to be performed on a live Magento website, requiring meticulous planning and execution.
  • Zero Downtime Requirement: Ensuring zero downtime during peak traffic periods.

Solution

All-in-one soak scheduling & spa booking service 

To address WorldSprings' challenges, Grinteq established a comprehensive spa scheduling platform.

1. Core Architecture & Business Logic:

  • Ecommerce to Booking Service Transformation: Our team re-engineered the core business logic, shifting from a product-centric ecommerce model to a versatile service booking system; adapting the platform to handle the complexities of time-slotted appointments, diverse service offerings, and multi-property management.
  • Real-Time Availability Management: The system provides real-time availability updates, preventing double bookings.
  • Flexible Booking Options: Customers benefit from flexible date and time selection, along with a multi-property view.
  • Calendar Synchronization: Booking data seamlessly syncs with external calendars like Google Calendar for efficient scheduling management.

2. Key Technical Components:

  • Database Redesign: The database structure was redesigned to support time-slot reservations, allowing individual services (e.g., soaks in specific mineral waters) to be mapped to multiple available time slots.
  • Magento Order Logic Rewrite: Grinteq rewrote the Magento order logic to accommodate service durations, working hours, and multi-service bookings.
  • Custom API Development: Custom API services were developed to fetch booking data, validate availability, and push confirmed reservations to the existing ERP system. A well-developed SOAP API platform facilitates data exchange.

3. User Interface & Experience:

  • Dynamic Booking Interface: A dynamic booking interface was built using Knockout.js, featuring modular components for each step of the booking process (service selection, time slot picker, checkout).
  • Intuitive Design: The UI prioritizes ease of use, offering a branded and tailored UX. We prioritized abstraction in UI components, allowing rapid adjustments to business requirements.
  • Mobile-Friendly: The interface is fully mobile-responsive.

4. Streamlined Checkout & Payment Integration:

  • Simplified Checkout Flow: A streamlined flow, engineered with Square's API, reduces friction for customers with a Guest Checkout feature and real-time slot validation.
  • Secure Payment Integration: Seamless API migration from Microsoft Dynamics 365 to Square Payments was achieved in two weeks without data loss.

Impact

Grinteq's booking system powered WorldSprings's growth, handling $9 million in first-year sales with a user-friendly process designed to reflect the brand’s standards: aligning the digital experience with the brand's promise of relaxation.

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