If it is web project we use mainly Java for front-end and C, Python, PHP for back-end.
Yes, we provide the engine and design of online sites with special features dedicated for sales, tradings, auctions, medical services, education, transport and many others.
Yes, this is a part of our services as well.
In principle, data mining is out of the scope of our company profile. However we cooperate with some data mining and data science experts.