My name is Justin.
I build hardware-integrated and regulated cross-platform mobile apps — the kind that need Flutter talking directly to native iOS/Android layers. What I specialize in: bridging Flutter to native via JNI, Dart FFI, and method channels — Bluetooth, USB serial, on-device ML, encrypted offline storage — for products in defense, fintech, and IoT. Recently shipped:
Defense-sector weapon-sight config tool — native ballistics bridge, real-time Bluetooth/USB firmware control
One-Tank Pulse — IoT propane monitoring, live with 100+ users on both stores
COPPA/FERPA-compliant fintech education platform with real-time WebSocket trading
Stack: Flutter · Dart · Kotlin · Swift · Riverpod · Bloc · Firebase · Supabase · native platform channels
🏢 Consulting through The Big 3 LLC · 📫 Email · Or through myself · 📫 Email · Open to contract work
Pinned repos below are a mix of open source and shippable demos — production client work is under NDA.