I am familiar with advanced techniques as Closures, Currying, and complex conceptsasContext,Scopes,                               Event Loop also with the features of ES6 such as constants, arrow functions, block-scopedvariablesand                                 functions, rest function parameters, default function parameters, string templating, class definition,                       getters, and setters, etc. and my work follows the principles such as S.O.L.I.D, DRY, Abstraction Principle                                 and Write Code for the Maintainer among others.  I would like to mention my participation in various start-ups/projects as yovoca.com, inmovis.com, calali.com and recently terminal.com.co. In terms of "rare technologies" I would like to point on the multi-model database OrientDB which we used in my last project termina.com.co.