TI Messenger

About the Project

About the Client

A leading provider of Practice Management Systems (PMS) commissioned us to develop a secure communication module that integrates seamlessly into existing practice software.

Project Overview

As part of digital developments in healthcare, there was a requirement to provide a secure and data-privacy-compliant communication solution. Against this background, the TI Messenger (TIM) was developed – a messenger application that enables exchange in individual and group chats for medical professionals. Communication occurs in real-time, is end-to-end encrypted, and complies with gematik specifications. TIM is available as a web and mobile application.

Challenge

Developing a secure messenger for medical personnel involves complex requirements – technical, regulatory, and organizational.

Special challenges included:

Implementing end-to-end encryption based on the Matrix protocol.
Seamless integration into the existing IT infrastructures of medical facilities.
Parallel development for web and mobile.
Ensuring availability and scalability for real-time communication under high load.
Preparation for gematik-compliant certification.

Solution

Frontend:

React.js – for a high-performance, modular, and user-friendly interface.

Backend:

Java with Matrix Synapse – as a communication server and to provide messaging functionality.

Database:

PostgreSQL – for robust, scalable data storage.

PWA Architecture:

Enables use as a mobile and desktop application without dependency on app stores.

Security:

End-to-end encryption, role-based access controls, and hosting in certified environments.

Integrations:

Connection to existing IT systems and processes of medical facilities.

Result

With TIM, a powerful, secure, and flexibly deployable messenger for medical personnel was created. The system meets the requirements of the gematik specification, supports real-time communication, and allows for easy integration into existing medical systems.