Hi,
To make the proposal I need to know the scope of project.
I have realized several web systems of the core of the business in sectors: floricola, logistics, administration of human talent and health.
The skill I have in javascript, ajax, widgets and php, will help you to successfully finish the project.
The methodology that I use for my projects is scrum, this methodology allows adopting an incremental development strategy giving results in short times until finalizing the project.
Please contact me to know more about your project and define the project planning.