Update app from CI3 to CI4

Hello,

I need someone skilled to update an app witten in CI3/Postgresql to CI4/postgres, respecting the new good practices of the latest version

After that, i will need new features on a regular basis

I am myself a "old monkey" user of CI4 so please don't apply if you are a junior dev.

We will work via a freelance platform, like upwork, peoplehour, etc..

Cheers,

Emmanuel