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Willian Justen de Vasconcellos

Location: Dublin - Ireland

Phone Number: +353 (083) 858 3622



Skype: willianjusten

Github: willianjusten

About me

I'm a software engineer that loves to work with challenging and creative projects. As a programmer, I'm in a constant search for better practices and also experimenting new things.

I love to work and collaborate with teams and in my spare time, I like to write on my blog or teach my friends about something that I've learned.


  • HTML - Jade - Haml - Erb
  • Responsive Design (Mobile First)
  • CSS (Stylus, Sass, Less, PostCSS)
  • Css Frameworks (Bootstrap, Foundation, Bourbon)
  • Grunt / Gulp / Webpack / Npm
  • Javascript (Design Patterns, Tests)
  • ReactJS / Redux / Flux
  • AngularJS
  • NodeJS
  • Python/Django/Flask
  • Ruby/Rails
  • PHP
  • Git
  • MySQL - MongoDB - Redis
  • TDD and Continuous Integration
  • Scrum and Kanban

Work Experience

Front-end Developer - Toptal - December 2016 - Present

As a part of the core team, I'm responsible for developing efficient, reusable and reliable front-end code. Working with: Javascript (ES6), HTML5, CSS3/SASS, React, Backbone, SLIM, CoffeeScript, Ruby on Rails, Git, TDD/BDD.

Instructor - Willianjusten Courses - May 2016 - Present

Creating courses about Web Development in my own platform.

Freelance Frontend Developer - HUGE - January 2016 - May 2016

Developing new solutions using modern technologies and prototypes is one of our basic roles at Huge.

Software Engineer - - March 2015 - January 2016

I worked in high scalable applications for, my main focus was in Front-end development, using Javascript, Sass, CSS, HTML, Performance, SEO. In most projects were developed using Python with version control using GIT.

Frontend Engineer - Queremos! / WeDemand - August 2014 - March 2015

Development of new features to the site, backstage administration and another stuff for the product. Help designers to create the best UX/UI, using Html5, CSS, JS, etc...

Frontend Engineer - Maxisite Comunicação Digital - January 2013 - August 2014

Development of websites, tools and applications for mobile and desktop, using HTML, CSS and JS for frontend and PHP/MySQL for backend.

Computer Teacher - Index Cursos Profissionais - May 2012 - December 2012

I acted as a teacher for children, adults and elderly, teaching Office (Excel, Word, Powerpoint, Access), Windows and Linux.

Student Researcher - Conselho Nacional de Desenvolvimento Científico e Tecnológico - January 2009 - January 2011

I worked with computacional chemistry, molecular modeling study and chemical interactions. Using Linux and Windows, virtualization, Remote Access via rdp and ssh.


IT in Instituto Superior de Tecnologia - IST - June 2012 - December 2014

Industrial Chemistry in Universidade Federal Fluminense - March 2008 - July 2012 (Stopped)


  • Testing & Refactoring with Continuous Delivery (Industrial Logic)
  • Learning to Program in Python - University of Toronto (Coursera)
  • MongoDB for Node.js Developers (Mongo University)
  • Web Development Track (Teamthreehouse)