Experienced Flutter Developer Needed to Complete & publish productivity App (iOS & Android)

About

We are looking for an experienced Flutter developer to help finalize and launch a task management/productivity mobile application for both iOS and Android. The UI is already designed, and the core structure is in place. Your role will be to complete development, integrate backend services, ensure production-level stability, and successfully publish the app to the Apple App Store and Google Play Store. This is not a beginner-level project. We are looking for someone who has previously launched apps to both stores and understands the full release process end-to-end.

Scope of Work

You will be responsible for:

• Reviewing the existing Flutter codebase
• Completing missing features and logic
• Backend/API integration (if needed)
• Firebase integration (Auth, Firestore/Realtime DB, Push Notifications, etc.)
• In-app purchases/subscriptions (if required)
• App optimization & performance improvements
• Bug fixing & QA support
• App Store & Play Store compliance adjustments
• Preparing production builds
• Assisting with the submission and approval process for both stores

Required Experience

Please apply only if you:

• Have 3+ years of experience with Flutter
• Have successfully published apps on both App Store and Google Play
• Understand Apple review guidelines and Play Store policies
• Have experience with Firebase and push notifications
• Can manage app signing, provisioning profiles, and certificates
• Can configure in-app purchases or subscriptions
• Write clean, maintainable, production-level code

Bonus if you have:

• UI/UX polish experience
• Experience optimizing app performance
• Experience with analytics and crash reporting

Deliverables

• Fully functional production-ready Flutter app
• Clean, documented code
• Successful deployment to both app stores
• Support during the review process (if any rejections occur)

To Apply

Please include:

• Links to Flutter apps you have personally launched (App Store + Play Store)
• A short explanation of your role in those projects
• Your availability (hours per week)
• Estimated timeline to complete a project like this
• Any suggestions you typically recommend before app store submission

Applications without live app examples will not be considered.

Project Type

• Fixed price preferred (open to discussion)
• Potential for long-term collaboration after launch

If you are detail-oriented, experienced with production Flutter apps, and comfortable handling full deployment, we’d love to work with you.

Company

• Upwork

Salary

• Work from home