Booking Platform for Diagnostic Test Management

About the client

The client is a healthcare services provider operating diagnostic centers, seeking to modernize operations by digitizing test booking, payments, and result management with a scalable, integrated web platform.

The Story

The client engaged FiftyFive Technologies to design and build a self-service platform enabling users to browse tests, locate clinics, book appointments, and pay online. Internally, they needed complete automation of order workflows—covering payment, clinic booking, test order creation, and result delivery. Lacking in-house engineering expertise, they partnered with FiftyFive to deliver a robust, scalable solution from the ground up.

Challenges

• > Integration of multiple third-party APIs (Randox Booking, Randox Ordering, Stripe, Airtable, AWS Location Service).

• > Orchestration of asynchronous workflows: payment confirmation, slot reservation, order creation, and status/result polling.

• > Dynamic multi-channel pricing logic with bundled tests, add-ons, and variable margins.

• > Ensuring data consistency across Stripe, Randox, and Airtable with cron-based synchronization.

• > High-frequency background task execution requires reliability, logging, and error handling.

The Solution

• > Centralized API Gateway using Express.js to unify third-party service calls.

• > Service-Oriented Architecture with modular services for booking, ordering, payments, and data sync.

• > Redis for temporary data storage and queuing; Node-Cron for asynchronous workflow automation.

• > Dynamic pricing engine calculating test costs, add-ons, and fees; automated Stripe Checkout session creation with reconciliation metadata.

• > Resilient integration layer with retry logic, token refresh, and API error handling.

• > Deployment on AWS with Docker, ensuring scalability and containerized maintainability.

• > Delivered by a dedicated team: 1 Solution Architect, 2 Backend Engineers, 1 DevOps Engineer.

The Outcome

The platform automated the entire diagnostic test booking lifecycle, reducing manual effort by 70% and minimizing operational errors. Real-time order synchronization improved booking-to-result turnaround by 40%, directly enhancing patient satisfaction and operational efficiency. Consolidated data in Airtable provided real-time business intelligence on sales, orders, and results, enabling data-driven decision-making. The modular architecture ensures scalability for new tests and integrations, positioning the client for sustainable digital growth.