ASP.Net MVC developer expert required for REST/ JSON API integration for a website

Integrate web application (web app) onto (yet to be built) website. Web application (web app) CRM database software that allows for data entry of clients' information, perform product comparisons, download product files, perform financial calculations and ALOT MORE. Website (yet to be built) A client touch point where user can enter their information on form and when entered, the data is saved directly onto web app. The fields correlate between the website and the web app. There are a total of three forms to be integrated onto the website; one for newsletter sign up, one for query form, and the last is a full application form that capture client data. Client can also query products via product comparison tool. Web app has existing product comparison tool so client can select the same options on website and query results directly from web app and display the information in a user friendly format. Data flow scenario 1: Website client select product features on website, hits enter --> query goes to web app via API token and return results to be displayed on website Data flow scenario 2: Website client enters data onto form on website, hits enter --> data entered matching the fields on web app goes directly into database when saved on website Key Points: - Web app API token is available once you are selected - No documentation is available as web app is constantly being updated and documentation changes cannot keep up with the changes - Please do not ask me for API token access when project is not awarded, I cannot provide due to confidentiality. Once you are selected, I will provide access Timeframe: - 2 weeks for familarisation, testing and preparation of page layouts - 2 weeks for implementation VERY IMPORTANT: - You must show examples of how you have done such integration before (ideally showing me examples of product comparison where data is extracted and integrated from another web app or database (not locally maintained), and also where data is input in a website and saved in another web app - You must be familiar with API integration using ASP.NET MVC framework - You must be familiar with the web app. From my perspective, I only want to achieve my desired outcome. From your perspective, please help me solve the challenges in order to achieve my desired outcome. This project will (almost) guarantee on-going work. Apart from your technical knowledge and expertise, you must be patient and professional because I can be difficult to work with at times.