Professional and hobbyist developer, with over 9 years of actual development under the belt.
My technical experience ranges from Mobile Native application (Javascript-ReactJs), Desktop (ElectronJs), web (Ruby on Rails, JS/Typescript/Flow, PHP, HTML5, SASS and deep understanding of web design principles and UX construction - being a former designer).
Right Now (2017), I am mostly doing Frontend development in ReactJs - It allows me to proceed my development focused on UI first, integrating functionality and having better testing possibility. Though I haven't focused on Ruby and Python during last 1 year, but I am ready to take them up again for a good project - Having spent more than 4 years with Ruby on Rails, it helps in quickly building a MVP and it has proven to be great for large applications.
As a Lead developer, I see myself adding value by challenging your requirements, helping you define clear specifications, being able to define and meet deadlines, to deliver a quality product.
Cheers
Amit Solanki