Finish Existing Mobile App Platform (Customer App, Driver App, Admin Panel, Backend)

I am looking for an experienced developer or small team to finish an existing mobile platform that includes:
Customer app
Driver app
Admin panel
Backend
A significant part of the project is already built, so this is not a project from scratch. I need someone who can review the current codebase, understand the architecture, and complete the remaining work professionally.
Current status
The customer app is already well advanced. Core flows and major screens are already in place. The backend and other parts of the platform are also partially implemented.
What I need
I need a developer or team who can:
review the existing codebase
finish the remaining mobile app features
complete the driver-side functionality
improve backend reliability and structure where needed
connect all parts of the system correctly
fix bugs and incomplete flows
prepare the platform for production use
test the system properly end-to-end
Tech stack
The project uses modern mobile and backend technologies, including:
React Native / Expo
Backend API
Admin panel
OTP/SMS authentication
Payment integration
Full technical details can be shared after initial discussion and NDA if needed.
Who I am looking for
Please apply only if you have experience with:
React Native mobile apps
backend development
admin panels
API integrations
authentication systems
payment integrations
taking over and finishing existing codebases
When applying, please include
relevant experience
examples of similar completed work
your approach to reviewing and finishing an existing project
estimated budget
estimated timeline
Important
This project is already in progress, so I am looking for someone who can continue and complete existing work rather than rebuild everything unnecessarily.
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