Hello!
Thank you for invite!
There are no details in the description of the project, thus hard to determine the scope of work.
All standard settings are easily accessible via ubus, the custom services can be implemented using RPC.
I suggest the following approach:
* Back-end: API and hosting of only static files (no dynamic content)
- Lua
- Ubus
- RPC
* Front-end:
- SPA
- HTML5
- JavaScript
OpenWrt support 32 archs. Not very good to build all targets without having hardware for testing.
Payments: 250$
- UI/API
- including firmwares for x86, x86_64
- 12$ for compile firmware per any additional platform.