Hello
1) Your choice of technology
-> After going through your discription and document with the detailed feature explianation for all 3 modules i.e Formula editor, Caculation engine, Simulator, I suggest you to go with ASP.NET itself as your exsiting Application is too on the same platform and hence it can comunicate with it more efficiently.
2) Suggested solution approach
-> Once we initiate the discussion on this project our technical team will guide you on the solution approch.
3) Effort estimate both time and duration.
-> As we have mentioned above, we have to clear the requirements in more detail. Before which we cannot give you the fixed cost and timeline. Our Hourly rate for the project will be USD 20 per hour.
4) We would need a NDA Signed.
-> We admire your need for signing a Non Disclosure Agreement. we are ready to sign it.
1 . Formula editor
2. Calculation engine
3. Simulator
Skills:
Technologies: PHP,ASP.NET (version 2.0/3.5/4/4.5) with C# or VB.NET,WCF, MVC 4.0, and Web Services,Windows service, Windows server 2008 + IIS 6-7, Classic ASP
CMS and Shopping cart: DotnetNuke,Nopcommerce,SageFRame CMS, Custom shopping cart.
Client Side Scripting: HTML 5.0, JavaScript, Ajax, CSS, Jquery, Json,angular Js, Knockout JS etc.
Database: MS-SQL 2008/2012, MySQL
Note: Bid amount is tentative and it may vary on further discussion.
Look forward to discuss with you more on this project.
Best regards,
Sagar