Hi,
I am a Full stack developer in Microsoft technologies.
I have extensively worked with DIAN integration in both .net and php platforms. You can check the reviews of my past projects in my profile to support this claim.
My area of expertise is web application development (asp.Net web forms, MVC, classic ASP), web services (SOAP & RESTFul), MySql & Sql Server as back end (through stored procedures).
I have 6 years of experience as a full time software developer.
Kindly contact me, lets discuss your requirements.