Data Scientist: A Unicorn?
Finding a good engineer is hard. Finding a good data scientist doubly so.
Data Scientist (n.): Person who is better at statistics than any software engineer and better at software engineering than any statistician. 
This definition gets to the heart of why it is so hard to hire a good data scientist. How many software engineers do you know that understand what Student’s t-test means? How many statistician do you know who has heard of Dependency Injection? To be honest, I know a couple, but that’s a couple out of 100+ software engineers and statisticians that I know.  The intersection of two small groups, statisticians and qualified software engineers, ends up being tiny.
The rest of the world is catching onto this supply-demand gap of data scientists. Research published by McKinsey Global Institute on Big Data reports:
Addressing the talent shortage will not happen overnight, and the search for deep analytical talent that has already begun can only intensify. 
If you are a data scientist, this is one great time to be one. Also, if you happen to be a great software engineer or a stastistician, you know what you should be learning next =)
P.S. If you happen to be a good statistician, software engineer or both (i.e. data scientist), we are hiring. Here at Treasure Data, we are building a platform to bring the power of Hadoop to the masses. If this sounds like your cup of tea, please drop us a line.