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Wellington Guimaraes, JavaScript Developer in Florianópolis - State of Santa Catarina, Brazil
Wellington Guimaraes

JavaScript Developer in Florianópolis - State of Santa Catarina, Brazil

Member since February 29, 2016
Wellington is a full-stack developer with over a decade of experience in all phases of the web development process: analysis, UI/UX design, and client and server side programming. He's one of those lucky programmers with real design abilities so in the front-end, he codes with flair and visual appeal. He's passionate about challenges, innovation, and making people’s lives easier. He communicates well and has worked in big and small teams.
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Portfolio

  • ArmadaDelivery (via Toptal)
    Node.js, Express, React, Redux, MongoDB, Mongoose, Android, Kotlin, Anvil...
  • DigithoBrasil
    C#, ASP.NET MVC, NUnit, NHibernate, SQL Server, Oracle, JavaScript, jQuery...
  • Automobi
    C#, Node.js, Java/Android, Web API, SQL Server, NoSQL, Entity Framework...

Experience

  • JavaScript, 11 years
  • C#, 10 years
  • Java, 9 years
  • Node.js, 4 years
  • Android, 4 years
  • React, 2 years
  • Riot.js, 1 year
Florianópolis - State of Santa Catarina, Brazil

Availability

Part-time

Preferred Environment

PC, WebStorm, IntelliJ IDEA, Git

The most amazing...

...piece of software I've made was a B2B2C platform with White Label web & mobile interfaces, with offline sync, & built from scratch using multiple tech.

Employment

  • Full-stack Developer

    2016 - 2016
    ArmadaDelivery (via Toptal)
    • Created RESTful API from the ground-up using Node.js, Express, and MongoDB.
    • Created a "single activity" (with multiple screens) Android app using Kotlin, Anvil ("virtual dom"), PaperDB, Retrofit, and Pusher.
    • Developed a shared/reusable UI library (React) to use on the admin and customer dashboard.
    • Created admin and customer dashboards (single-page apps) using React, Redux, Google Maps, and more.
    • Configured a job scheduler (with Agenda.js) to run the many recurring tasks required by the business to operate correctly.
    Technologies: Node.js, Express, React, Redux, MongoDB, Mongoose, Android, Kotlin, Anvil, Pusher, GCM/FCM, PaperDB, Retrofit

  • Full-stack Web Developer

    2015 - 2016
    DigithoBrasil
    • Replaced a problematic spreadsheet (specifically importing was a problem) with a specialized single page web UI; it was greatly welcomed by users.
    • Introduced componentized front-end development using Riot.js (React-like) in 2 existing projects for the government.
    • Improved a C# testing fluent builder library.
    • Created reusable UI components library for connecting elements, inline editing, context menus, and more.
    • Decoupled the most complex UIs from back-end, making the back-end respond solely through a web API.
    Technologies: C#, ASP.NET MVC, NUnit, NHibernate, SQL Server, Oracle, JavaScript, jQuery, RiotJS, HTML5, CSS3, Sass, Gulp, Webpack

  • Co-founder | CTO

    2014 - 2015
    Automobi
    • Implemented an Android White Label app generator with Gradle and Node.js. It was able to generate the apps and publish them to the Play Store.
    • Created a SMS gateway microservice using Socket.IO and Java (Android app) to send authorization tokens and notifications for offline users.
    • Designed the core RESTful API with multiple client sync capabilities.
    • Applied a lot of design patterns to make the code base more easily extensible and maintainable.
    • Created a NoSQL data storage library for Android with focus on high performance, flexibility, and simple usage.
    Technologies: C#, Node.js, Java/Android, Web API, SQL Server, NoSQL, Entity Framework, WebSockets, Google Cloud Messaging, React, TypeScript, HTML5, CSS3, Sass

  • Full-stack Web Developer

    2014 - 2014
    UTC Engenharia
    • Implemented an importing feature, on both the front-end and back-end, for old spreadsheets used in industrial constructions planning.
    • Created several jQuery plugins to improve UI experience.
    • Introduced several JavaScript best practices to improve the code base maintainability.
    • Worked on the domain design of a new system to replace spreadsheets used to control the steps of industrial constructions.
    • Was invited to be a technical leader, before leaving the company.
    Technologies: C#, ASP.NET MVC, Entity Framework, SQL Server, HTML5, CSS3, Less, jQuery, Handlebars.js

  • Web/Android Developer

    2013 - 2013
    StartupHouse
    • Designed the entire UI of an Android POS app.
    • Worked on the development of the first Android driver for Brazilian fiscal printers.
    • Developed a complex reputation engine for a generic reviews platform.
    • Implemented a search engine for a reviews platform combining Elasticsearch and a fast algorithm for keywords grouping and score improvement.
    • Created an embeddable widget (JavaScript) for product reviews for an eCommerce site.
    Technologies: C#, Entity Framework, ASP.NET MVC, Web API, MySQL, Elasticsearch, JavaScript, jQuery, Android, SQLite, OrmLite

  • Researcher | Air Traffic Controller

    2007 - 2013
    Brazilian Air Force
    • Created a platform for the control tower to receive military flight plans through the internal network (with a web and mobile interface).
    • Implemented a batch processor for military squadron flight plans.
    • Designed a shift schedule maker for air traffic controller with rules defined using simple RegExp.
    • Created a flight plan route finder for use on simulated data for ATC training.
    • Implemented an automatic operational briefing generator, based on local equipment and meteorological information; highlighting critical information for the upcoming shifts.
    Technologies: C#, Java, JavaScript

Experience

Skills

  • Languages

    ECMAScript (ES6), TypeScript, Kotlin, JavaScript, Java, Sass, HTML5, C#, CSS3

  • Frameworks

    Jest, Redux, Flux, Express.js, ASP.NET, AngularJS

  • Libraries/APIs

    Sinon.JS, Pusher, React, Node.js, Handlebars, Riot.js, jQuery, Socket.IO, Google Gson, Quartz, Google Charts API

  • Tools

    Webpack, Babel, NPM, Visual Studio, Git, IntelliJ IDEA, Gulp.js, WebStorm, Mocha, TFS, Hangfire, Sketch, Adobe Illustrator, Travis CI, Gradle

  • Paradigms

    Test-driven Development (TDD), Design Patterns, Scrum, Extreme programming, Agile Software Development, REST, Object-oriented Programming (OOP), Functional Programming

  • Platforms

    Android, Amazon Web Services (AWS), Azure

  • Storage

    MySQL, MongoDB, Elasticsearch, Microsoft SQL Server

  • Other

    Enzyme, SVG, Domain-driven Design (DDD)

Education

  • Incomplete Bachelor's degree in Computer Science
    2006 - 2009
    Federal University of Mato Grosso do Sul - Campo Grande, MS, Brazil
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