I'm most proficient in Java because its the language I learned data structures in, and because I love Android development (although Kotlin is the new kid on the block...) I have a soft spot for the expressiveness of languages with functional features; map, reduce, fold, and lambdas are indispensable to me. However, give me any codebase in any language and I'll grok it without trouble; I love seeing optimized code anywhere, from well thought-out
numpy code that minimizes loops to C networking code, even though I don't consider myself to be interview-ready in those languages.
I've been interested in neural nets since I realized I was barking up the wrong tree by applying bag of words to SIFT descriptors when developing a sketch-based image retrieval system.
I'm an open source aficionado; have contributed a few patches, mostly to Android projects, including Firefox for Android. Always looking to get more involved.