Alejandro Hernandez, Developer in Córdoba, Cordoba, Argentina

Alejandro Hernandez

Serverless Developer

Location
Córdoba, Cordoba, Argentina
Toptal Member Since
October 30, 2012

Alejandro got his bachelor's degree in software engineering in 2005 and has since been working for software companies of all sizes from all around the globe as a freelancer. Currently, he enjoys working as a full-stack architect in JavaScript projects, where his experience and his deep understanding of architecture and theory are most impactful.

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Portfolio

Vidurama
Node.js, JavaScript, HTML5, Web Development, Full-stack, Expo, React Native...
AdsInc
Babel, Serverless, Node.js, JavaScript, HTML5, Web Development, Full-stack...
WhoaStork
Node.js, JavaScript, HTML5, Web Development, GraphQL, React

Experience

JavaScript - 20 yearsNode.js - 10 yearsD3.js - 6 yearsReact - 6 yearsGraphQL - 4 yearsServerless - 3 yearsDocker - 1 yearAmazon DynamoDB - 1 year

Location

Córdoba, Cordoba, Argentina

Availability

Part-time

Preferred Environment

Node.js, Git, Atom, MacOS

The most amazing...

...thing I've built is a multi-player 3D Pong game in HTML5: distributed UX, rendered in WebGL/Three.js, controlled by accelerometers, connected with Socket.IO.

Work Experience

2018 - 2018

Front-end Engineer

Vidurama
  • Built a simple, high-performance React application.
  • Created pixel-perfect designs with styled components.
  • Integrated a context API to handle application state.
  • Developed a small React Native application (using Expo) as a proof of concept.
  • Wrote a custom REST API library with Context API.
Technologies: Node.js, JavaScript, HTML5, Web Development, Full-stack, Expo, React Native, React
2017 - 2018

Solution Architect

AdsInc
  • Provided server-side rendering with React and AWS Lambda and AWS API Gateway to reduce cost from idle server time.
  • Implemented GraphQL Data Loader for Postgres SQL tables to reduce DB load.
Technologies: Babel, Serverless, Node.js, JavaScript, HTML5, Web Development, Full-stack, GraphQL, React, AWS Lambda
2017 - 2018

Front-end Engineer

WhoaStork
  • Created the admin application of the web store in React.
  • Replaced Redux with Apollo Client for GraphQL against a Ruby back-end.
  • Created a HOC architecture to reuse common GraphQL functionality for listing and filtering.
  • Created our own custom UI library with styled components.
  • Used HOC for form manipulation.
Technologies: Node.js, JavaScript, HTML5, Web Development, GraphQL, React
2016 - 2016

JavaScript Front-end Engineer

DBMS Insight
  • Worked with a React/Redux environment on a major enterprise product already in production.
  • Helped integrate charts libraries based on D3 and React.
Technologies: Babel, Node.js, JavaScript, HTML5, Web Development, D3.js, Redux, React
2015 - 2016

Full-stack JavaScript Engineer

Globa.li
  • Created a new front-end app based on React and Redux.
  • Added a Hot module replacement plugin to Webpack.
  • Worked with legacy code on the server side, able to understand the principles behind it and make it work again.
Technologies: GraphQL, JavaScript, HTML5, Web Development, Full-stack, MongoDB, Express.js, Node.js, Redux, React
2013 - 2014

Front-end Engineer

Nifti.com
  • Created reusable D3.js charts using Raphael.js to draw SVG on browsers.
  • Handled responsive design layouts for views.
  • Implemented reusable components for UX using jQuery.
  • Created an xQuery Selector generator from an HTML Element DOMNode.
  • Created a Pop CSS editor for elements.
Technologies: Node.js, HTML5, Web Development, Raphaël, D3.js, jQuery, JavaScript
2011 - 2013

Technical Leader

Globant
  • Did advanced JavaScript functional programming.
  • Designed a MongoDB database.
  • Created single-page apps with Backbone.js and Ember.js.
  • Developed software using RESTful APIs with Node.js and Express.js.
  • Handled JavaScript UX framework prototyping.
Technologies: Backbone.js, Express.js, Node.js, MongoDB, HTML5, JavaScript
2008 - 2011

Business Intelligence Consultant

America Movil (AMX)
  • Developed a reporting and decision support system.
  • Designed the data warehouse.
  • Implemented an ETL process.
  • Designed reports and data visualization.
  • Configured SharePoint.
Technologies: SharePoint, PL/SQL, SQL Server Reporting Services (SSRS), SQL Server Analysis Services (SSAS), SQL Server Integration Services (SSIS), Microsoft SQL Server

Experience

An Introduction to Full-stack JavaScript

http://www.smashingmagazine.com/2013/11/introduction-to-full-stack-javascript/
An article I wrote on how to develop applications end-to-end using only JavaScript from the client side to the server side, and even as a query language to the database side. The article was syndicated by Smashing Magazine.

Toptal Academy - React.js

https://www.youtube.com/playlist?list=PL6nqmerUSyVHKn5g0CpkHvtCycEylazGl
I was in charge of the Toptal Academy for React.js program were we help other toptalers to understand new technologies

Toptal Academy: AngularJS

A crash course on AngularJS that I taught for the Toptal community in Córdoba.

Toptal Buenos Aires JavaScript Conference

A talk on ECMAScript 6 and Koa.js using generators, which are the most fascinating feature of ES6.

Bucefalo Base System | Class Definer for JavaScript

https://github.com/picanteverde/bucefalo-base
Bucefalo Base System is a class definer for JavaScript that handles class definition and asynchronous module definition. The complete code and tests performed using Mocha are available in the link above.

ASCII Cam

I created an ASCII Cam to create ASCII art from live video from the web cam.

Augmented Box

A simple augmented reality game to hit the character on the screen controlling the ball using this marker:
http://bit.ly/UCXOe0
Image of Init.js: A Guide to the Why and How of Full-Stack JavaScript publication
Publication

Init.js: A Guide to the Why and How of Full-Stack JavaScript

https://www.toptal.com/javascript/guide-to-full-stack-javascript-initjs
Image of Polymer.js: The Future of Web Application Development? publication
Publication

Polymer.js: The Future of Web Application Development?

https://www.toptal.com/front-end/polymer-js-the-future-of-web-application-development
Image of A Look at JavaScript’s Future publication
Publication

A Look at JavaScript’s Future

https://www.toptal.com/javascript/predicting-javascript-future
Image of Finding a Better Framework than Vue.js, React, and Angular publication
Publication

Finding a Better Framework than Vue.js, React, and Angular

https://www.toptal.com/front-end/tips-and-practices

Skills

Languages

GraphQL, ECMAScript (ES6), JavaScript, HTML5, Sass, ES7, Less, SQL

Frameworks

Redux, Express.js, Laravel, Flutter, Connect.js, React Native, AngularJS, PixiJS, Ember.js

Libraries/APIs

React, Node.js, Backbone.js, D3.js, Polymer, jQuery, Raphaël, WebRTC, Socket.IO, EaselJS, WebGL, Three.js, jsSHA, RequireJS, YUI, Handlebars

Tools

Webpack 2, Babel, Webpack, Node Inspector, Gulp, Grunt, Atom, Expo, Amazon Elastic Container Service (Amazon ECS), AWS IAM, Git, GitHub, Solr, Jenkins, Apache, Mercurial, Adobe Fireworks, Redmine, Jira, Mocha

Paradigms

Business Intelligence (BI), Functional Programming, Agile Software Development, REST, Asynchronous Programming, Prototype-based OOP, Parasitic Inheritance

Other

Serverless, Full-stack, Writing & Editing, Web Development, Apollo, Amazon API Gateway, Ajax, DOM, Web Services

Platforms

SharePoint, MacOS, Amazon EC2, AWS Lambda, Docker

Storage

SQL Server Integration Services (SSIS), SQL Server Analysis Services (SSAS), SQL Server Reporting Services (SSRS), PL/SQL, Amazon S3 (AWS S3), Amazon DynamoDB, Oracle PL/SQL, Microsoft SQL Server, MongoDB, Redis, NoSQL, MySQL

Education

2000 - 2005

Bachelor's Degree in Software Engineering

Catholic University of Cordoba - Cordoba Argentina