Client Server integration using json for Python (pyramid framework) - Extjs (client side) web application

We are looking for an expert web application developer, to work on our web application (Python on Pyramid Framework, Extjs client side). This is an assessment product we are developing. Both client side ( in Extjs) and server side ( in python) have already been coded. Required task is: Integrate the server side python code with client side Javascript code (Extjs - ajax calls from Extjs to the server). JSON strings are currently passed from client to server and server to client. Total 60 Urls (Get, Put and Post counted separately) approx ( JSON requests). All have been coded, but some are working and some are not working The developer need to make ajax url calls from extjs code, debug, identify the issue, fix it (in python code or extjs code) and integrate in Extjs and Python code. Skills Required: 1. Extjs (Javascript Framework): Experience of working in Extjs javascript framework and experience integrating client with server using json strings 2. Python: Experience with python web application frameworks ecosystem, development experience in - pylons/pyramid 3. Understanding of MVC framework with web application concepts HTTP specifications. 4. JSON 5 ORM: sqlalchemy The source code will be shared, so u need to maintain strickest confidentiality. The application flow and functionality will be explained along with necessary documents. We are preferably looking for an India based contractor, who can complete the integration task in record time (within 7-10 days) and can maintain proper communication. The bid can be tentative as code will be shared and based upon that you can change the bid as per your estimate. I need to start immediately, so pls bid fast.