Engineering digital health systems, teaching the next generation, and building AI-powered tools — from Haiti to the world
IT Manager at Caris Foundation · Dimagi Consultant · UEH Professor · Building production-ready EHR platforms, AI chatbots, and data systems in resource-constrained environments.
About Me
Biography
I'm Pierre Robentz Cassion — IT Manager & Principal Software Engineer at Caris Foundation International, Project Analyst Consultant at Dimagi Inc., and Professor at Université d'État d'Haïti (Campus Limonade). I also serve as Vice-Président Formation, Recherche & Rayonnement at AAFDS (Amicale des Anciens de la Faculté des Sciences). My work spans digital health EHR systems, CommCare platform deployments, AI/GenAI applications (LangGraph chatbots, Claude API integrations), and data analytics. I build production systems that operate in challenging field environments across Haiti. Beyond consulting, I create bilingual content under the cafit brand — fitness and tech in English and Haitian Creole on TikTok. I'm also deeply interested in Catholic spirituality, systems-thinking, and infrastructure architecture.
Academic Background
Graduate of the Faculty of Sciences, State University of Haiti (UEH). Currently enrolled in Master 2 MBDS (Mobility, Big Data and Systems Integration) at FDS-UEH, in partnership with Université Côte d'Azur (France), under Prof. Gabriel Mopolo-Moké. Completed Oracle Database Tuning coursework (TUNE 2), UML modeling, and AWR/ADDM/STA diagnostic chain studies.
What I Build
Specialized expertise across digital health, AI systems, and full-stack development
Digital Health & EHR Systems
Unified multi-site EHR architecture (Spring Boot + PostgreSQL) replacing legacy systems. Data Lake design with self-service dashboards. Mobile health apps with offline-first architecture. CommCare integration, form development, and deployment support for programs like MUSO health screening, PTMTCT, Cash4Work, and FAES.
AI & Intelligent Systems
Multi-platform chatbot architecture using LangGraph (Telegram, WhatsApp, Messenger, Web) with department-based subgraph routing, Pydantic state classes, and human-in-the-loop support. GBV chatbot with PTMTCT subgraph. Claude API integration via Cloud Function proxies. AI-powered nutrition apps with meal planning and photo recognition.
Data Engineering & Analytics
SQL-based reporting with window functions, cursor-based pagination, and auto-resume mechanisms. M&E dashboards and decision-support tools. Google Apps Script automation (MySQL/AWS RDS to Google Sheets sync). AWS Elastic Beanstalk environment management and migration.
Full-Stack & Mobile Development
Android apps with Kotlin, Jetpack Compose, Hilt, Room/SQLCipher, Firebase (MVVM/SOLID, multi-module Gradle). Web applications: Django + HTMX + Alpine.js + Tailwind, React, .NET. Church management systems with NFC card scanning. Agriculture planning concepts with offline multilingual support.
Teaching & Training
University professor at UEH Campus Limonade. MBDS cohort class representative. Technical documentation in French and English for non-technical staff. Assignment tracker systems with automated notifications.
Featured Work
Real projects shipped to production — not case studies or proposals
Caris Unified EHR Platform
Caris Foundation International
Comprehensive multi-site Electronic Health Record system replacing a CodeIgniter 3 monolith. Includes a Data Lake for analytics, self-service dashboards for program managers, mobile apps for field workers, and CommCare integration for data collection.
Role
Lead Architect & Developer
Stack
Spring Boot, PostgreSQL, CommCare, Data Lake Architecture
Impact
Will unify health data across all Caris operational sites in Haiti
NutriCareHT — AI Nutrition App
Caris Foundation International
Multilingual nutrition mobile app with AI meal planning, photo recognition for ingredients, and direct connection to certified nutritionists. Supports English, French, and Haitian Creole. Planned presentation at Global Digital Health Summit.
Role
Lead Developer & IT Manager
Stack
Flutter, Firebase, AI/ML, Cloud Functions
Impact
Serves patients, nutritionists, and families across Haiti
VeySante — Hypertension Monitoring App
Caris Foundation International
Android application for hypertension monitoring with encrypted local storage and Claude AI integration via Firebase Cloud Functions. Features strict MVVM/SOLID architecture with multi-module Gradle setup.
Role
Lead Developer
Stack
Kotlin, Jetpack Compose, Hilt, Room/SQLCipher, Firebase, Claude API
Impact
HIPAA-conscious design for patient data protection
GBV Multi-Platform Chatbot
Caris Foundation International
LangGraph-powered chatbot for Gender-Based Violence support with department-based subgraph architecture, PTMTCT subgraph, and multi-platform deployment across Telegram, WhatsApp, Messenger, and Web.
Role
AI Systems Developer
Stack
Python, LangGraph, Pydantic, MySQL, Multi-platform APIs
Impact
Human-in-the-loop escalation, multilingual, context-aware routing
CommCare Platform Deployments
Dimagi Inc. / Caris Foundation
Bilingual XForm XML forms for hypertension/diabetes screening (MUSO program). Program configuration guides for Cash4Work and FAES. SQL reporting optimization with window functions. AWS infrastructure management (Node.js 18 → 20/22, Amazon Linux 2023).
Role
Project Analyst Consultant
Stack
CommCare, XForm XML, SQL, AWS Elastic Beanstalk, Google Apps Script
Impact
Large-scale mobile health data collection in challenging field environments
Children's Educational Book
Personal Project
French-language children's educational book structured by age group across 17 chapters. Produced in both LaTeX and Word formats for print and digital distribution.
Role
Author & Designer
Stack
LaTeX, Word
Impact
Educational content for children in Haiti
Tech Stack
Tools and technologies I work with daily
Backend
Frontend
Mobile
AI / GenAI
Data
Cloud / DevOps
Health Platforms
Tools
Teaching & Academia
Bridging practice and education in technology and data science
Professor at UEH Campus Limonade
Teaching computer science and information systems at Université d'État d'Haïti, training the next generation of Haitian technologists.
Master 2 MBDS Student
Currently enrolled in the MBDS program (Mobility, Big Data and Systems Integration) at FDS-UEH, in partnership with Université Côte d'Azur (France) under Prof. Gabriel Mopolo-Moké.
AAFDS Vice-President
Vice-Président Formation, Recherche & Rayonnement at Amicale des Anciens de la Faculté des Sciences — leading initiatives for training, research, and academic outreach.
MBDS Class Representative
Built the MBDS assignment tracker with EmailJS notifications for the cohort, helping classmates stay organized with deadlines and submissions.
Impact & Outcomes
Measurable results from real deployments
Systems Running
Digital health platforms, M&E dashboards, and AI tools operating in real field conditions across Haiti — not demos or prototypes.
EHR Architecture
Building unified health data infrastructure for Caris Foundation operations across multiple facilities and programs.
Deployment Focus
Every system built for offline functionality, low bandwidth, and the operational constraints of resource-limited environments.
Multilingual Apps
Applications supporting English, French, and Haitian Creole — serving diverse user communities across Haiti.
How I Work
A structured approach to delivering reliable systems — from requirements to production.
Discovery
Understanding your operations, users, constraints, and success criteria — not just requirements.
Design & Prototype
Wireframes, architecture, and prototypes to validate approach before full development.
Build & Deploy
Iterative development with regular check-ins, testing, and deployment to production environments.
Support & Iteration
Post-launch support, user training, and iterative improvements based on real field usage.
Typical project timeline: 2-6 months depending on scope and complexity.
Why Work With Me
Full-Stack Delivery
I ship complete systems — not just code. From requirements to deployment, I handle the full lifecycle with production-grade discipline.
Field-Proven Experience
My work runs in real operations across Haiti. I understand offline requirements, low bandwidth, and operational constraints that matter in challenging environments.
International Expertise
Experience with Dimagi, international NGOs, and cross-border teams. I understand donor requirements, global health standards, and working across time zones.
Academic Foundation
Professor at UEH, Master 2 MBDS student — I bring rigorous methodology and up-to-date knowledge from both teaching and continuous learning.
cafit — Fitness & Tech Content
Personal BrandBeyond consulting, I create bilingual content on fitness and technology under the cafit brand. Follow for workout tips, tech insights, and Haitian Creole content bridging fitness and digital culture.
Let's Build Something That Works
If you need reliable digital health, data, or AI systems — especially for challenging environments — let's talk about your project.
Free 30-minute consultation