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Alejandro Hernandez, Serverless Developer in Córdoba, Cordoba, Argentina
Alejandro Hernandez

Serverless Developer in Córdoba, Cordoba, Argentina

Member since August 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.
Alejandro is now available for hire



  • JavaScript, 15 years
  • Node.js, 8 years
  • D3.js, 6 years
  • React, 3 years
  • GraphQL, 2 years
  • Serverless, 2 years
  • Docker, 1 year
  • AWS DynamoDB, 1 year
Córdoba, Cordoba, Argentina



Preferred Environment

Mac OS X, Atom, Git, Node.js

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.


  • Front-end Engineer

    2018 - 2018
    • 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: React, React Native (Expo)
  • Solution Architect

    2017 - 2018
    • 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: AWS Lambda, React, GraphQL
  • Front-end Engineer

    2017 - 2018
    • 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: React, GraphQL
  • JavaScript Front-end Engineer

    2016 - 2016
    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: React, Redux, D3.js
  • Full-stack JavaScript Engineer

    2015 - 2016
    • 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: React, Redux, Node.js, Express.js, MongoDB
  • Front-end Engineer

    2013 - 2014
    • 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: JavaScript, jQuery, D3.js, Raphael.js
  • Technical Leader

    2011 - 2013
    • 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: JavaScript, HTML5, MongoDB, Node.js, Express.js, Backbone.js
  • Business Intelligence Consultant

    2008 - 2011
    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: MS SQL Server, Integration Services, Analysis Services, Reporting Services, PL/SQL, SharePoint



  • Languages

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

    Redux, Express.js, Connect.js, AngularJS, Ember.js
  • Libraries/APIs

    React, Node.js, Backbone.js, D3.js, Polymer, WebRTC, Socket.IO, Pixi.js, EaselJS, WebGL, Three.js, jsSHA, RequireJS, YUI, Handlebars
  • Tools

    Webpack 2, Webpack, Node Inspector, Gulp.js, Babel, Grunt, AWS ECS, AWS IAM, Git, GitHub, Solr, Jenkins, Apache, Mercurial, Adobe Fireworks, Redmine, Jira, Mocha
  • Other

    Technical Writer, Full-Stack Developer, Business Intelligence (BI), Gulp Expert, Serverless, Apollo, AWS API Gateway, Ajax, DOM, Web Services
  • Paradigms

    Functional Programming, Agile Software Development, REST, Asynchronous Programming, Prototype-based OOP, Parasitic Inheritance
  • Platforms

    AWS EC2, AWS Lambda, Docker
  • Storage

    AWS S3, AWS DynamoDB, Oracle PL/SQL, Microsoft SQL Server, MongoDB, Redis, NoSQL, MySQL


  • Bachelor's degree in Software Engineering
    2000 - 2005
    Catholic University of Cordoba - Cordoba Argentina
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