Android and iOS developer needed to add features to existing app

I need an Android and iOS Taxi app to be updated. I already have a design for it, I just need it to be updated. Please read description very clearly see ask questions if necessary. We purchased extended license for working app here: [login to view URL] We need an Android and iOS developer to customize source code and add features to the existing app( you're not developing this from scratch). App currently has has native Android and iOS source plus a node/express sever app and also a web dashboard app made with polymer. You are required to customize the Android and iOS app and the server app made with node. The node app basically handles routes and saves records to MySQL database. Connection between mobile apps and server is managed using [login to view URL], progress will be tracked using gitlab. You will need to setup the mobile source code on your development machine from the bought starter kit. Here's the online documentation for setting up the project. [login to view URL] We have setup the server up already and link will be shared: You will also be added to the firebase console we set up for this Source Code consists of: Android Java app Swift iOS app Node/Express js server app Polymer dashboard app Requirements: Rider app currently only has the standard ride feature where they choose a start and end destination and car type, then they are mapped to an online driver. We want to add a second feature called book for later. This is basically like the standard ride but that the ride doesn't start immediately but can be scheduled at a later date. Driver app currently allows drivers to sign up and have their profiles activated from the backend. However we want drivers to also be able to add their car details during sign up. This means they can choose to register only as a driver and upload their drivers license and other details and/or register a car alongside. Both car and driver would need backend verification as well. They can register only the car or only as a driver or both Payment gateway integration UI needs to be clean and error free. App flow must be intuitive and user friendly. Freelancer will be required to update android, iOS and server app. The maximum budget for this is $400. Payment will be made on 2 milestones, when android app is finished and also when iOS app is finished. Please confirm in your bid that you have read and understood the requirements. We want to proceed right away. Please provide past mobile app references. Best Regards.