Fahid Nadeem

The hard part

Engineered reliable Bluetooth Low Energy (BLE) connectivity for real-time stimulus control — vibration, chimes, and electrical signals — between the app and wearable hardware. Solved persistent BLE connection failures across fragmented Android OEM skins (Samsung, Xiaomi, Pixel) using a foreground service architecture with intelligent reconnection and last-known-state fallback.

The hard part

Architected high-availability kiosk software for unattended public deployment — touchscreen-guided vision testing, computer-vision-based acuity measurement, autorefractor data capture, and tele-optometry integration, with secure patient data handling under medical-device constraints. Led team delivery and release cycles.

The hard part

Led iOS architecture for interactive score rendering, real-time key transposition, synchronized audio playback with tempo control, AirTurn Bluetooth pedal integration for hands-free page turns, and offline library sync — all at scale with subscription and in-app-purchase infrastructure.

The hard part

Implemented real-time neurophysiological data capture across hundreds of indicators per session, baseline-comparison impairment-scoring algorithms, and anti-cheating measures, with enterprise workplace-management controls. Shipped cross-platform on iOS and Android.

The hard part

Built reliable real-time alert delivery with GPS location capture, background location services for ongoing incident tracking, and offline alert queuing with retry logic to guarantee delivery under poor network conditions.

The hard part

Designed an offline-first architecture for field workers operating on low-connectivity construction sites — local data persistence, conflict-free sync with backend operations systems, and reliability tuning for battery and harsh field conditions.