HealthTech

Telehealth Platform Modernization

How we replaced a legacy monolith with a modern, HIPAA-compliant platform serving 500K+ patients.

Published September 20, 2024Updated June 4, 2025

500K+

Patients Served

-60%

Scheduling Time

100%

HIPAA Compliance

Weeks to MVP

Project Overview

A regional healthcare provider was running their telehealth operations on a legacy PHP monolith built in 2015. The system had no API layer, brittle database queries, zero automated testing, and frequent downtime incidents.

After failing a HIPAA compliance audit, they needed a modern platform — fast. Syslice was brought in to architect and deliver a complete rebuild without disrupting ongoing patient care.

The Challenge

The existing system could not handle the surge in telehealth demand. Appointment scheduling took 8+ minutes, video calls dropped regularly, and patient data handling had compliance gaps.

The migration had to happen while the old system remained operational. Zero downtime during the transition was non-negotiable — patients relied on this platform daily.

Our Solution

We designed a phased migration strategy with four workstreams running in parallel.

Microservices Architecture

Decomposed the monolith into 12 independently deployable services with clear domain boundaries and API contracts.

HIPAA-Compliant Infrastructure

AWS HIPAA-eligible services with encryption at rest and in transit, BAA coverage, access logging, and automated audit trails.

Smart Scheduling Engine

AI-assisted scheduling that considers provider availability, patient preferences, and appointment type to reduce booking time by 60%.

Parallel Migration

Ran old and new systems in parallel with data sync, allowing gradual patient migration without any service interruption.

Technologies Used

Node.js / NestJSReact / Next.jsPostgreSQLDocker / KubernetesAWS (ECS, RDS, S3)Twilio Video

“The transition was seamless. Our patients didn't experience a single minute of downtime, and our scheduling efficiency has transformed. Syslice handled the complexity with remarkable clarity.”

Director of Technology

HealthTech Client

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Project Overview

After failing a HIPAA compliance audit, they needed a modern platform — fast. Syslice was brought in to architect and deliver a complete rebuild without disrupting ongoing patient care.