Throw me your gnarliest code, I can make it shine

I'm a Software Craftsman with 20+ years of experience building from web applications, to ETL, BI, data mining solutions and even some desktop applications.

I prefer to work on the web but away from the browser. I enjoy refactoring and optimization workloads and I love to explore new technologies.
I can work in any technology but I have my preferences - C#, Java/Kotlin, JavaScript, Ruby and Elixir, in no particular order.