You should always keep on growing and acquiring a new skill set ,if now the hot topic is Deep Learning you should necessarily look on to it. Deep Learning requires really fast matrix operations. It has become the forcing function on the innovation in the realm of customized Linear Algebra accelerators. Today, you do not need a massive cluster for doing ML research. You can build a GPU based machine and can start handling very big size models from the comfort of your living room.
Interested in Machine Learning? Check out this Machine Learning Certification by Intellipaat.
See this Machine Learning Course for more information :