Write multiple modules for the project on Yii 1/2

There is a web application on yii 1 - backend, there all business logic and API are described.
There is a web application on yii2 - its front.
The goal is to write some new apes to implement on the front.


Experience from 1 year with yii necessarily.
Interesting remote cooperation on a permanent basis (40 to 120 hours per month).
Write how many hours you can allocate per week and the cost of an hour.