Senior Flutter / Flutterflow Developer & Technical Lead for Multi-Vendor Marketplace

I am looking for an experienced senior developer or technical lead to take ownership of an existing marketplace project and continue development until MVP launch.

The project already includes:

* Business Requirements Document (BRD)
* Functional Requirements
* User Flows
* Figma Designs
* Existing FlutterFlow project
* Existing Flutter Admin application
* Defined marketplace, logistics, payment and escrow workflows

The platform is a multi-vendor marketplace combining:

* Product marketplace
* Service marketplace
* Mobile Money payments
* Escrow payments
* Driver logistics
* Delivery tracking
* Buyer, Seller, Driver and Admin roles
* Android, iOS and Web

What I Need

The selected developer will:

Phase 1 – Technical Review

* Review the current codebase
* Review FlutterFlow implementation
* Review database architecture
* Identify technical risks
* Recommend improvements
* Validate MVP scope

Phase 2 – MVP Development

Continue development of the complete MVP including:

* Authentication & Roles
* Buyer Module
* Seller Module
* Driver Module
* Admin Dashboard
* Escrow Workflow
* Payments Integration
* Logistics & Delivery Tracking
* Disputes & Returns
* Notifications
* Localization (en/fr)

phase 3 – testing & launch

* bug fixing
* performance optimization
* security review
* production deployment
* launch support

required skills

* flutter
* flutterflow
* firebase or supabase
* postgresql
* marketplace platforms
* payment integrations
* logistics systems
* scalable architecture

important

i am looking for a long-term collaboration, not only an audit.

Please provide:

* Similar projects you have built
* Architecture experience
* Team size (if applicable)
* Estimated timeline
* Availability
* Fixed-price proposal or milestone breakdown

The goal is to complete and launch the MVP with the selected developer.