Complete Final Review for Web Marketplace

I am looking for an experienced full-stack developer to complete the final technical review, testing and handover of an existing web-based marketplace platform.

The platform includes:

User registration and secure login
Separate user roles and dashboards
Listing creation and management
Location-based search
Availability and booking functionality
Online payment integration
Transaction and payout management
Email notifications
Administrative controls
Mobile-responsive design

The developer will be responsible for:

Reviewing the existing codebase and system structure
Testing the main user journeys and platform functions
Identifying and resolving any remaining technical issues
Reviewing security, performance and mobile responsiveness
Confirming the production deployment is functioning properly
Organizing the source code and technical documentation
Providing a final handover summary and recommendations for future development

The business concept, platform name and detailed operating model are confidential and will only be shared with the selected developer.

This is a fixed-price project for the final review, completion and technical handover of an existing platform.