Freelance Flutter Developer – Offline-First Sync & Image Processing (No Agencies)

No Agencies or Firms! We are only hiring true freelancers.

We are looking for an experienced Flutter developer to help build a production mobile app that works offline first and syncs reliably to the cloud when internet connectivity is available.

This is not a beginner project. We are specifically looking for someone who has already shipped Flutter apps with offline data storage, background sync, and real-world edge cases.

Project Summary

Flutter mobile app (Android + iOS)

App must function fully offline

Automatic cloud synchronization when connectivity is restored

Includes image processing for analyzing photos of rifle targets (grouping, measurement, scaling)

Required Experience (Please do not apply if you don’t meet these)

Strong professional experience with Flutter / Dart

Prior experience building offline-first mobile apps

Local storage (SQLite, Drift, Hive, etc.)

Sync logic for intermittent connectivity

Conflict handling and retries

REST API integration

Experience working with camera images and image files

Ability to design clean, maintainable app architecture

Preferred / Bonus Skills

Image processing or computer vision experience

Measuring distances or coordinates from images

Scaling and normalization of photos

OpenCV or native image processing experience is a plus

Background tasks and lifecycle handling

Native Android / iOS interop when required

Performance optimization for image-heavy workflows

What We Care About

Architecture and reliability, not just UI

Code quality and long-term maintainability

Clear communication and ability to work independently

Real production experience (not tutorial-only apps)

Apply Now

Apply Now