laravel backend for PWA web app (full time only)

laravel backend for mobile app
usd 5, longer term work, permanent job.
full time only
just tell me your tech of backend and database.

for your info, our team will have
uiux, flutter frontend, few backend with same tech

this app will be like this (personal activity count)
https://www.dropbox.com/s/gpy4oy73n0bb909/XRecorder_15042022_014554.mp4?dl=0

we would like to work on assisting system or work from scratch.

the architecture concept would like like wordpress
- core files _ themes
- activity is plugin ( so i will hire many developer for creating this activity)

so you need to create a core files and prepare document for other developer to build plugin as zip uploading and activate

Plugin activity have many type
- number count
- text count
- time input (long/short)
- upload image and video
- bad habit count
- etc


report have many type
- normal time
- timebase type