Big data could create a job bonanza as organisations try to make sense of their huge hoards of information over the next few years.Within three years, 4.4 million IT staff will be working on big data projects, according to predictions from analyst Gartner, with 1.2 million big data experts needed in Western Europe alone.Some of this big data usage will be simply an expansion of existing projects to accommodate even more data — such as the fraud detection work done by banks, or the customer churn analytics done by retailers.But across many industries demand for big data projects — the ability to find nuggets of insight inside huge volumes of