Its an awesome place to work, a little more structuring on the training part will make it a perfect place to work.
Best part of working in an organization like Hortonworks is the adaptation of new technologies in the realm of Big Data. Although, catching up with everything thats around takes a toll on learning. The con of this industry is lack of documentation because coders submit the code however enough documentation isn't available.
Adaptation to open source technologies
Too many things to catch up and less structured training