Does your new employer have a data science or machine learning team? Is there any way you can position yourself to work on projects/products that involve those teams? If you have interest and aptitude in ML, perhaps (i) do whatever you can to learn what these folks have already done, and what they're working on now, (ii) offer a helping hand, or even just ask them for a training set for one of their production models, and see if you can replicate or beat the results.