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Julien Renaux

Julien Renaux

Toulouse, France
Member since April 7, 2015
Julien is a front-end Mobile Engineer with experience working for startups and multinationals across the world. As a certified Scrum Master, Julien has worked with a team of 10 engineers located in three different countries for eBay. He spends most of his free time writing on his blog, developing his own open source projects, organizing Google Developer Group or AngularToulouse meetups, or contributing to open source projects.
Julien is now available for hire
  • JavaScript, 7 years
  • Angular, 5 years
  • Node.js, 3 years
  • Ionic, 3 years
  • TypeScript, 2 years
  • Firebase, 2 years
  • React.js, 2 years
  • React Native, 1 year
Toulouse, France
Preferred Environment
OS X, Ubuntu, Git, GitLab, Jenkins, Slack, Atom
The most amazing...
...thing I've developed is an open source project to help WordPress users get free iOS/Android hybrid applications in minutes.
  • Lead Developer Front-nd | Cryptocurrency Exchange
    2017 - PRESENT
    • Architected and designed two large scale apps.
    • Created reusable UI Components.
    • Implemented reusable Redux containers.
    • Implemented internationalization (i18n) with react-intl.
    • Wrote modules for Jest Unit, Snapshot, and end-to-end testing.
    Technologies: React.js, Redux, ES6, ES7, Webpack, Babel
  • React Software Engineer
    Rakuten Games / BlackStorm Labs
    2016 - 2017
    • Created reusable UI Components on a large scale app.
    • Implemented reusable Redux containers.
    • Implemented internationalization (i18n) with react-intl.
    • Developed Jest Unit and Snapshot testing.
    Technologies: React, Redux, ES6, ES7, Webpack, Babel
  • React Software Engineer
    CNES (French Space Agency)
    2016 - 2016
    • Implemented a performance improvement of an existing React application (Reselect, Immutable).
    • Created reusable UI Components on a large scale app.
    • Implemented reusable Redux containers.
    • Developed Jest Unit and Snapshot testing.
    • Contributed to the React Stockcharts library.
    Technologies: React, Redux, Electron, ES6, ES7, Webpack, Babel
  • Software Engineer, Architect
    Core Metabolics
    2015 - 2016
    • Architected a cross platform AngularJS/Ionic application.
    • Created the Web platform using Angular Bootstrap.
    • Created the Mobile app with Ionic Framework.
    • Worked on server infrastructure installation.
    • Worked on StormPath integration on the client side.
    • Implemented internationalization (i18n) with angular-translate.
    Technologies: AngularJS, Webpack, ES2015, ES6 modules, StormPath
  • Software Engineer, Architect
    2015 - 2015
    • Architected and developed an AngularJS/Ionic-based application.
    • Created an iOS app
    • Created an Android app
    • Implemented Native Transitions
    • Internationalization i18n with angular-translate.
    Technologies: AngularJS, Ionic, Cordova, CommonJS, Webpack
  • Software Engineer, Architect
    2015 - 2015
    • Architected and developed an AngularJS/Ionic-based application.
    • Created an application across 3 platforms with the same code base (Web:; Android:; iOS:
    • Explained the project in my post "Modular AngularJS and Ionic architecture: A first step towards AngularJS 2"
    • Internationalization i18n with angular-translate.
    Technologies: AngularJS, Ionic, Cordova, ECMAScript 6, CommonJS, Webpack
  • Software Engineer
    2015 - 2015
    • Made performance improvements to existing applications:
    • Created the Android version using Crosswalk.
    • Created cloud features using
    • Handled implementation of the UI.
    Technologies: Ionic, AngularJS, Android, iOS9
  • Co-Founder
    2014 - 2015
    • Developed the web, mobile, and hybrid apps.
    • Created Android and iOS applications using Ionic Framework, AngularJS, and Cordova.
    • Created the web application using Ionic Framework, AngularJS, and Bootstrap.
    • Created the Showcase platform using jQuery and Bootstrap 3.
    • Created mockups and marketing support (ads, screenshots, slides etc.).
    Technologies: AngularJS, Node.js, Webpack, Ionic, Cordova
  • Software Engineer
    Living Objects
    2012 - 2015
    • Developed a rich JavaScript application using AngularJS, Angular Material, and Node.js.
    • Created a platform that monitors access provider networks using jQuery, CoffeeScript, PHP5(Symfony2), and Bootstrap 3.
    • Led the SVN-to-Git transition (Git, GitLab, Composer/Satis, Jenkins).
    • Implemented quality processes (unit tests, merge requests, code review, and CI via Jenkins).
    Technologies: Node.js, AngularJS, PHP, HTML, CSS, JavaScript, jQuery, Webpack
  • Software Engineer
    eBay, inc
    2010 - 2012
    • Worked on a web analytics platform for internal information sharing (17,000 employees) based on the CMS Joomla!
    • Led a multinational team (10 members across the world: US, China, Australia) as the Certified Scrum Master (Scrum Alliance).
    • Developed components/modules/widgets for the CMS Joomla! (MooTools/PHP).
    • Administrated the continuous integration platform using Jenkins.
    • Acted as the GitHub enterprise administrator (architecture, code review).
    • Created the JavaScript framework + UI library used in the project.
    Technologies: PHP, JavaScript, Joomla, HTML, CSS, MooTools
  • Julien Renaux Blog (Development)

    For years I have been sharing thoughts and tips about front-end engineering.

    Also available on Android:

  • WordPress hybrid client (Development)

    Build amazing iOS and Android applications for your WordPress website for free!

  • WordPress API client for Angular (Development)

    This client supports WordPress API v1 and v2 and now WordPress 4.7 native Rest API.

  • Ionic 2 vs. Ionic 1: Performance Gains, New Tools, and a Big Step Forward (Publication)
    The Ionic project is rapidly gaining in popularity and is one of the most popular open source projects worldwide. With the recent announcement of the stable version of Ionic 2, this is the perfect time to underscore the Ionic 2 and its predecessor. In this post, Toptal software engineer Julien Renaux outlines the major changes Ionic 2 brought to the platform and explains how to put these new features to good use.
  • The 9 Most Common Mistakes That Ionic Developers Make (Publication)
    Ionic is extremely popular at the moment, and it has revolutionized the hybrid application industry in a way that nobody could have imagined. However, over time, the best practices and tooling for Ionic have not progressed in the same way. As a result, the number of pitfalls that developers need to look out for when working with Ionic is still high. In this article, Toptal Freelance Software Engineer Julien Renaux outlines the most common mistakes that Ionic developers should know.
  • Languages
    CoffeeScript, JavaScript, TypeScript, Sass, HTML5, ECMAScript, PHP, Less, SQL
  • Frameworks
    Ionic 2, Ionic, Bootstrap 3, Redux, Angular, AngularJS, PhoneGap, Jasmine, Cordova, Symfony 2, PHPUnit, React Native
  • Libraries/APIs
    React.js, jQuery, React-redux, MooTools, Node.js, Restangular, jQuery UI, Firebase Web SDK, Facebook API, GitHub API
  • Tools
    Git, Webpack, Atom, Jenkins, Babel, Gulp.js, GitLab, Grunt, PostCSS
  • Platforms
    Firebase, Android, Linux, WordPress, Ubuntu, Docker, Joomla 3, iOS
  • Misc
    Single-page Applications (SPA)
  • Paradigms
    Scrum, Agile Software Development
  • Storage
    MySQL, MongoDB
  • Master's degree in Computer Science, Big Data
    Tongji University - Shanghai, China
    2010 - 2011
  • Master's degree in Computer Science, Programming
    Telecom Lille - Lille, France
    2006 - 2011
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