Do you have experience handling massive amounts of data? Give an example of how you used data to solve a problem?

"Yes, we used Big Data frequently at my current employer, ABC Retailers. One way we were able to use Big Data to our advantage was for estimating Sales Returns. Rather than use a high level percentage of sales, we were able to drill down to each product sold and assign a historical return rate. This allowed for a more precise estimate in the month of sale, and required fewer adjustments in subsequent periods."