Mario MontanoSenior 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
Projects
Enterprise EMR Platform
Proprietary healthcare system (NDA protected)
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.
A showcase version demonstrating the architecture and interface patterns from my production EMR work. Built with sanitized sample data to demonstrate capabilities while respecting client confidentiality. Features patient management, clinical notes with SOAP format, vitals tracking, lab results, and multi-facility support.
Insurance Verification Automation
Enterprise confidential project
Built a dual-system architecture (web app + automation bot) that can process 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.
A demonstration version showcasing the automation workflows and interface patterns from my production verification system. Features queue management, real-time eligibility checks, batch processing, and intelligent error handling with manual review queues. All built with sanitized sample data to demonstrate capabilities while respecting client confidentiality.
Healthcare Provider Mobile App
Client proprietary application
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.
Pulse
A showcase landing page demonstrating the Apple-style scrollytelling technique with scroll-driven canvas animations. Features frame sequence animations where video frames render based on scroll position, creating smooth product reveals and 360° rotations. Built with Astro for zero-JS-by-default performance, GSAP ScrollTrigger for animations, and AI-generated assets.