Crawling for Shopping Websites

We are a stealth-mode startup in the space of comparison shopping, much like shopzilla, overstock, etc. We are in need of a programmer to write a code for data-mining by crawling Walmart and Best Buy. The programmer can choose their own desired programming language (Java preferred). Collecting data about the products that are sold on these sites. Especially, we need someone who can successfully retrieve shipping cost and shipping duration on these websites Skills: Required: - Expert in data-mining - Experience designing and implementing complex and scalable data mining processes to sort, merge, join and aggregate large amounts of data - Strong programming skills (one or more of C/C++, java, perl, python with application to data mining) - Strong experience with server-side programming - Strong experience with information extraction from unstructured data (Phrase Extraction, Chunking, Named Entity extraction) - Solid understanding of all components of a search engine Desired: - 2+ years of experience with large data set processing and data mining