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Liam O'Brien

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Flutter developer at an Irish healthtech company, building cross-platform clinical apps with offline-first architecture. Open-source contributor to the go_router package.

flutterdartmobiletesting

Articles by Liam O'Brien(16)

State Management in Flutter: The Decision That Shapes Your Entire Codebase

This article explores the critical role of state management in Flutter development, emphasizing how the choice of state management solution can significantly impact the architecture, performance, and maintainability of your application, especially in healthcare contexts where offline capability is paramount.

FlutterState ManagementCross-PlatformHealthcareArchitecture

27 July 2026

Flutter Performance Profiling: Finding the Dropped Frames Your Users Notice

This article dives into the intricacies of profiling Flutter applications to identify performance bottlenecks that lead to dropped frames. We will cover essential tools, techniques, and best practices that ensure a smooth user experience, especially in contexts where performance is critical, such as healthcare applications. The article includes practical examples and insights into Flutter's rendering pipeline to help developers maintain high performance in their applications.

FlutterPerformance ProfilingDropped FramesRendering PipelineHealthcare Apps

23 July 2026

Why your Flutter app bundle size grew 40% and what to do about it

Flutter apps are larger than equivalent native apps by default. Understanding where the size comes from — and which reduction techniques actually work — keeps the app competitive in markets where download size drives conversion.

flutterperformancemobileoptimization

19 July 2026

Immutable data classes in Flutter with freezed

A practical, code-first guide to immutable data classes in Flutter with freezed. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

flutterfreezedcodegendata

24 February 2026

Flutter animations: implicit vs explicit

A practical, code-first guide to flutter animations: implicit vs explicit. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

flutteranimationsui

16 June 2025

Publishing a Flutter package to pub.dev

A practical, code-first guide to publishing a Flutter package to pub.dev. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

flutterpackagespub-devpublishing

9 June 2025

Adding native Android code to a Flutter app

A practical, code-first guide to adding native Android code to a Flutter app. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

flutterandroidnativeplatform-channels

27 April 2025

Liam O'Brien — ANN Tech — ANN Tech