Web and Mobile Enthusiast
While always keeping in touch with the latest web and mobile app technologies, I've become quite familiar to a couple of them in the recent years. Beeing a huge fan of some awesome programming languages that offer a high level of safety while still opening the whole world of freedom in architeture and paradigm orientation, I really deep-dived into some of them:
Ordered by expertise from highest to lowest, I'm the most experienced in:
TypeScript
Which I followed up from its early days on. Check the Roadmap to see the next great features beeing added in the near future!
JavaScript
Since TypeScript gives me the opportunity of using an opt-in type-safe language, I'm not getting into trouble with writing plain JavaScript so often. But TypeScript - beeing a superset of latter - kept me on always remembering all of JavaScripts strengths and weaknesses.
Swift
As I started with Objective-C when I began developing Apps for the iOS platform (and software by itself) back in 2009, I have never thought programming could be comfortable at all... Hello Swift! Becoming ABI stable in the very near future and while having one of the most traight-forward and easy-to-learn syntax, Swift is what makes native iOS and macOS development fun and fast nowadays. However, still quite familiar with Objective-C.
Objective-C
When it's time to dig out the old jokes, some advanced knowledge about Objective-C and the Cocoa (Touch) frameworks may become handy! A lot of awesome frameworks and libs are out there, willing to be intergrated in Swift-written Apps.