Cognitive AssessmentCase study · Mobile Architect & Engineer

DRUID

A cross-platform cognitive impairment detection application built from scratch for Android and iOS.

2

mobile platforms shipped

Team experience, including partner-led work. The role described here is mobile architect & engineer; it identifies the implementation contribution rather than implying sole ownership of the product. For a new engagement, we agree the scope, responsibilities and release criteria before development begins.

01 · The challenge

The product problem

Capture reliable sensor-driven assessment data, protect sensitive user access, and keep critical flows dependable in low-connectivity environments.

02 · Engineering

Architecture and implementation

01

Defined the initial Flutter architecture, project structure, and BLoC-based state management foundations.

02

Built gyroscope and accelerometer assessment flows for movement capture and impairment-related calculations.

03

Implemented biometric authentication and offline-first synchronization with persistence, retry, and recovery logic.

04

Added centralized logging, Sentry monitoring, unit and integration tests, and automated Play Store and TestFlight delivery.

03 · Stack

Technology used

FlutterBLoCFirebaseSentry

04 · Outcomes

Android & iOS delivery
Offline-first reliability
Production monitoring and automated releases

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