Convert Ionic 3 to Ionic 4 CRUD with MongoDB, developer needed for existing running app

Hello, As i check you already have that ionic 3 version app with backend on node js with mongoDB database. please could you provide me that web app code with admin and all web services API you already have them ? we will required them for make changes in API according to the ionic 4 version platform. here please check our apps. VR app [login to view URL] Travel Booking app [login to view URL] [login to view URL] [login to view URL] Instagram Followers App [login to view URL] Local Buy and sell App [login to view URL] [login to view URL] [login to view URL] Online shopping App [login to view URL] [login to view URL] [login to view URL] on demand beauty spa and salon service App [login to view URL] [login to view URL] on demand services App [login to view URL]

Hello , I am Ionic Mobile development Expert and have 7+ years of Experience .Please contact so we can discuss the requirement in detail . Thank you

I will help you. I am a professional full stack developer. Let's consult in detail about your project. Meanwhile, you can explore the services that I provide @" septum Dhanbad software"