I have been working with scraping-type systems for over 6 years, using software like Casper, Selenium, iMacros, and more. The largest system I've worked on touches hundreds of thousands of data points per week, driving a company with 7 figures of revenue each year. This system uses Ruby on Rails, and I've scaled it using asynchronous approaches like Sidekiq.
I'm located in Houston, and work out of my home office, so you'll have the advantages in availability, timezone, and communication that entails.