Flutter Bug Fixing, Optimization & Code Audits
Is your live Flutter app crashing, stuttering below 60fps, leaking memory, or failing App Store review? I perform root-cause diagnostics to stabilize, refactor, and speed up your existing mobile codebase.
24–72 Hrs
Critical Bug Turnaround
0 Crashes
Production Target
100%
Root Cause Diagnosis
SDK 3.x
Modern Migration Support
Engineering Capabilities
What I Deliver in Flutter Bug Fixing & Maintenance
Crash & ANR Resolution
Diagnose Sentry, Firebase Crashlytics, and native iOS/Android tombstone logs to fix null pointers, thread deadlocks, and unhandled exceptions.
DevTools UI Jank Profiling
Profile raster/UI thread timelines to eliminate dropped frames, expensive build() loops, and unnecessary widget subtree repaints.
Memory Leak Elimination
Locate unclosed stream controllers, leaked image textures, and orphaned singleton instances using DevTools memory heap snapshots.
Legacy SDK & Gradle Upgrades
Upgrade legacy Flutter 1.x/2.x projects, update deprecated third-party plugins, and migrate Android Gradle / iOS CocoaPods build scripts.
Methodology
My 4-Step Engineering Process
Diagnostic Audit
Inspect Crashlytics logs, profile DevTools timelines, and reproduce bugs on physical test devices.
Root-Cause Patch
Implement clean architectural fixes without band-aid hacks or breaking dependent modules.
Regression Verification
Write automated tests ensuring the bug never reappears in future release builds.
Release & Telemetry
Deploy patch build and verify stability metrics on live Firebase Crashlytics dashboards.
Technologies & Tools
LQDCNVS: 4K Digital Art Android TV App →
Resolved severe isolate memory leaks and achieved locked 60fps 4K video texture decoding on Android TV hardware.
Flutter Performance Optimization: 20 Ways to Fix Jank, Slow Builds & UI Lag →
Deep-dive breakdown with step-by-step code implementation, architecture patterns, and benchmarks.
Frequently Asked Questions
Questions About Flutter Bug Fixing & Maintenance
Can you fix an existing Flutter app built by another agency or developer?
Yes. I frequently take over partially completed, stalled, or unstable Flutter codebases. I conduct a root-cause audit, stabilize legacy dependencies, patch runtime crashes, and optimize rendering performance without requiring unnecessary full rewrites.
How do you diagnose intermittent memory leaks and UI lag in Flutter?
Using Flutter DevTools on physical hardware, I profile memory allocations, inspect frame render timelines for raster thread jank, identify unclosed stream subscriptions or animation controllers, and isolate expensive widget rebuild subtrees.
What is your turnaround time for critical production bug fixes?
Emergency production crashes and store rejection issues can typically be audited and patched within 24 to 72 hours, complete with regression test coverage and sanitized pull requests.
Do you provide ongoing Flutter app maintenance and SDK upgrade support?
Yes. I provide ongoing maintenance sprints covering major Flutter version upgrades (e.g. Flutter 3.x), Android Gradle and iOS CocoaPods updates, third-party plugin migrations, and App Store compliance updates.
Ready to engineer your mobile app?
Let's Build Something Exceptional
Direct engineer-to-client communication. Quick 20–30 day MVP delivery with clean architecture.