Device + App Ecosystem
HFA — Health For All
What I built / owned
- Co-developed HFA CarePort: portable monitoring device for SpO2, heart rate, ECG, temperature, and heart–lung sounds, with real-time transmission to a mobile app.
- Engineered the HFA App (Flutter): AI-powered health analysis, prescription management, doctor–patient connectivity, and Health Connect synchronization.
- Implemented computer vision: YOLOv8 to extract blood pressure readings from Omron device images (accessibility for underserved users who cannot input numbers reliably).
- Designed backend: Firebase real-time data, Google OAuth authentication, and encrypted medical record storage.
- Led product & business track: market research, competitor analysis, SWOT, objectives/KPIs, go-to-market plan, basic financial model, staffing plan, and socio-economic impact assessment.
Methods & tools
Flutter (Dart)
Firebase
Google OAuth
Health Connect
YOLOv8
Computer Vision
Human-in-the-loop
- Clinician-in-the-loop design: AI supports triage and data interpretation, with clear escalation paths to doctors (safety + trust by design).
- System thinking: device → connectivity → app UX → storage/security → workflow adoption.
- Product discipline: KPIs, rollout constraints, and impact assessment guided the build decisions (not just “cool features”).
Skills gained
- Cross-functional leadership across hardware, AI, mobile, and business tracks.
- Production mindset: reliability, data integrity, authentication, and privacy-aware storage patterns.
- Building for last-mile adoption: accessibility, low-friction flows, and workflow-compatible escalation.
Engineering decision that shaped the product (toggle)
- We consciously shifted away from a “diagnose-first” approach toward an alert + workflow system that a doctor could trust and actually use in practice (inspired by real clinical exposure).
Proof / evidence gallery
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