Luis Del Giudice
I started web development when i was 13, me and my friends had a Ragnarok Online private server and i had the task to develop a complete website integrated with the game database. Some years later i was taking a class in Coursera named Startup Engineering and that's when i first saw "MEAN" since then i've been freelancing developing complete frontend/backend web applications for small companies.
The skill that i consider the most important that i have is, being able to develop for a platform that i've never developed for with a language i've never used before using tools that i've never seen before with very low documentation time