Hello Sir,
I am a software developer with over 10 years of experience in developing applications with VB.NET. Additionally, I have a Masters degree in Geo-Information Science. I have also developed a number of GIS-based applications such as a Google Maps Downloader, a resource-access-cost modelling software and several others.
I have had a clear understanding of your requirements after reading the project description and it is similar to a program I developed some time ago. I have a completely functional program, complete with source code for downloading Landsat-8 images from AWS.
If you accept my offer, I can quickly add support for Sentinel-2 images, run some tests to ensure it works and then submit the code to you in 7 to 10 days.
You can contact me to view samples of projects I have worked on in the past or for any other discussions of your interest.
Thank you