All Experience

React Native

Cross-platform mobile development with native performance

React NativeTypeScriptReduxReact NavigationAsyncStorageSQLitePush Notifications (FCM/APNs)FastlaneCodePushFirebaseDetoxREST APIsWebSocketsAWSApp Store DeploymentGoogle Play DeploymentRelease QAProduction Support

React Native

Overview

I build production-ready cross-platform mobile applications using React Native, shipped to both the App Store and Google Play across 3+ apps, including a Canada-wide industrial diagnostics app launched with hundreds of active users and clinical-research apps deployed to 100-500 participants per study over multi-year engagements.

My experience includes BLE hardware integration, offline-first sync architecture for flaky-network research deployments, scheduled local notifications managed under iOS's 64-trigger ceiling, and signed Android keystore + Apple bundle release workflows.

I also own practical mobile delivery work around release QA, TestFlight and Google Play submissions, crash investigation, production fixes, security remediation, and coordination between mobile clients, backend APIs, and deployment environments.

In production

  • Industrial diagnostics app: React Native 0.80, iOS + Android. Just launched Canada-wide with hundreds of active users (technicians and dealership staff). I built large parts of the app: the entire Apollo GraphQL client architecture (including an admin-mode AST rewriter that injects status: NULL into outgoing queries with a graceful no-op fallback for endpoints that don't accept it), the Products Catalog with a five-size disk-cached image pipeline, in-app PDF and video viewing, the offline-resilient state architecture, and pentest remediations. Worked on the BLE diagnostics and over-the-air firmware-install surface alongside other contributors, including an 870-line connection-health monitor that reconciles native BLE state against Redux every 5 seconds.
  • Psychiatric research mobile app: React Native 0.81 / iOS + Android, multi-year engagement with 100-500 enrolled participants and 50-100 clinicians. Owned both ends of the stack (RN client + Rails admin API). Designed offline-first with two independent Redux queues (survey responses
    • app-usage events) that survive sign-out failures via selective state purging, build-time bundled MP4 content fitting under a 150 MB APK ceiling, and an iOS cold-start notification deduplication lock with a 30-second timeout ceiling and Jest coverage of all edge cases.
  • Mediterranean-diet research mobile app: React Native 0.64 / iOS + Android, hundreds of participants in a longitudinal trial. Main developer at project startup. Designed a transparent dot-product recommendation algorithm (recipe nutrition × per-user food-group shortage vector), with end-to-end PII encryption (lockbox + blind_index) and devise_token_auth rotation centralised in the Redux root reducer.

Problems Solved with React Native

1. Cross-Platform Architecture

I design mobile systems that:

  • Share business logic across platforms
  • Handle platform-specific behavior cleanly
  • Maintain consistent UI patterns
  • Scale as feature complexity grows

Balancing shared code efficiency with native optimizations.

2. Real-Time & API-Driven Mobile Apps

I integrate:

  • REST and GraphQL APIs
  • WebSocket-based real-time updates
  • Secure authentication flows
  • Offline synchronization strategies

Ensuring reliable mobile experiences even under unstable network conditions.

3. Native Device Capabilities

I implement:

  • Push notifications
  • Biometric authentication
  • Camera and GPS integration
  • Secure local storage
  • Background processing tasks

Extending JavaScript-driven apps with native capabilities.

4. Performance & Deployment

I optimize mobile performance through:

  • Rendering optimization
  • Memory management strategies
  • Bundle size reduction
  • Automated CI/CD pipelines
  • Fastlane deployment workflows
  • Over-the-air updates with CodePush
  • TestFlight and Google Play release management
  • Production crash and regression investigation

Delivering stable, production-grade mobile applications.

5. Mobile Release Ownership

Mobile apps have operational responsibilities beyond feature implementation. I support:

  • Signed iOS and Android release builds
  • App Store and Google Play submission workflows
  • Release QA across devices and OS versions
  • Backend compatibility checks before launch
  • Post-release monitoring, hotfixes, and remediation

That release ownership is especially important for research and industrial apps where users depend on predictable behavior outside a normal office environment.

Why React Native?

React Native enables efficient cross-platform development while maintaining native performance, making it ideal for startups and enterprises needing rapid delivery without sacrificing scalability.