Data center database info gathering

I am looking to gather customers’ profiles via official websites as part of a data center database project. The desired output format is spreadsheets, with pre-defined columns and formulae, so as to facilitate an analysis of the data gathered. I would like an experienced freelancer to carry out this project in an efficient and professional manner, who will ensure that all pertinent data is gathered from the sources within the agreed upon timeframe. Experience working with large data sets and carrying out complex searches is highly preferred.