Senior Full-Stack Engineer
Turning complex requirements into reliable, production-ready systems
8+ years of full-stack development, with 6+ years specialized in healthcare systems, EMR architecture, HIPAA compliance, and building scalable applications trusted by thousands of users.
About
Hi, I'm Mario 👋
I started programming in 2017 and transitioned to healthcare software in 2019. What began as curiosity turned into a passion for building systems that healthcare professionals rely on every day.
Today, I'm a senior full-stack engineer at a US healthcare startup, leading technical decisions and guiding development teams. I'm responsible for architectural decisions, solving complex technical problems, and delivering complete solutions from requirements to production.
Domain Expertise
- HIPAA-compliant systems architecture
- EMR/EHR development & integration
- Protected Health Information (PHI) security
- Healthcare workflow automation
Technical Leadership
- Mentoring and guiding development teams
- Architectural decision-making & system design
- Self-directed in ambiguous environments, establishing structure and best practices
- Stakeholder management & requirements gathering
Tech Stack
Primary Stack
Infrastructure
Occasional Use / Maintenance
Highlights
Architected and maintain enterprise EMR platform serving 100+ healthcare providers and 100K+ patients across multiple facilities
Developed insurance verification automation processing 200+ patients daily with 90%+ success rate, saving 150+ hours of manual work monthly
Built native iOS application for healthcare providers enabling offline-first patient care with wound photography, measurements, and prescription management
Mentor development teams and drive architectural decisions as primary technical authority in a fast-growing healthcare startup
Building open-source EMR showcase to demonstrate architecture and coding practices (coming soon)
Featured Projects
Enterprise EMR Platform
Architected and developed a comprehensive EMR system serving 100+ healthcare providers and 100K+ patients across multiple facilities. Features include patient charting, appointment scheduling, prescription management, lab integrations, billing workflows, HIPAA-compliant audit logging, and role-based access control. Led a team of 3 developers while building critical features independently. Managed full lifecycle from requirements gathering through production deployment and ongoing maintenance.
Proprietary healthcare system (NDA protected)
Insurance Verification Automation System
Built a dual-system architecture (web app + automation bot) that processes 200+ patient verifications daily with 90%+ automatic success rate. Reduced manual verification workload from 8 hours to under 1 hour per day, saving 150+ hours monthly. Led a team of 3 developers while building critical features independently. System handles data collection, automated eligibility checks with insurance providers, and exception handling for manual review.
Enterprise confidential project
Healthcare Provider Mobile App
Developed native iOS application for healthcare providers to use during patient visits on iPad. Built for speed and efficiency, enabling providers to capture wound photography with precise measurements, manage prescriptions, schedule appointments, and access patient records. Led a team of 3 developers while building critical features independently. Optimized for offline-first operation with seamless EMR synchronization.
Client proprietary application
Open Source Showcase
EMR Demo - Open Source Showcase
A simplified EMR system built from scratch to demonstrate full-stack architecture and coding practices. Features three core modules: patient management, appointment scheduling, and prescription management. This project showcases my approach to building healthcare software with modern technologies and best practices.
Under construction - Public repository coming soon