Most of my previous experience is in Java but my current area of focus is iOS apps for healthcare. Patient casenote management system and an electronic form solution for paramedics in ambulances. Im currently using both Java and Swift for my dissertation, an iOS app with a Java backend using Dropwizard for REST. iOS can be good but Im eager to get away from Objective-C. I wouldnt mind going back to java full time or even maybe C# since they are basically the same thing.