Wellington Guimaraes

Campo Grande - State of Mato Grosso do Sul, Brazil

Member since February 29, 2016

Wellington is a full-stack developer with over ten years 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.

JavaScript C#Java Sass Node.js Android React Riot.js CSS3 HTML5 Kotlin ASP.NET Express.js Socket.IO jQuery Show more

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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
Android, 4 years
Node.js, 4 years
React, 2 years
Riot.js, 1 year

Campo Grande - State of Mato Grosso do Sul, Brazil

Availability

Part-time

Preferred Environment

PC, WebStorm, IntelliJ IDEA, VS, C9, 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.
- 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

Automobi (Development)
Developed a complete solution for the after sales department of car dealers with web and mobile interfaces.
Pingobox (Development)
http://www.pingobox.com.br
A Brazilian Android POS.
PuzzleTalk (Other amazing things)
An award-winning project; won the Microsoft AppCampus award in 2014.
Riot UI (Development)
https://github.com/wellguimaraes/riot-ui
A few Riot UI components.
React Formy (Development)
https://github.com/wellguimaraes/react-formy
A light, simple and fast Higher Order Component to keep form state, inspired by redux-form, but with much simpler usage.
Panama.js (Development)
https://github.com/wellguimaraes/panama.js
A simple library for uni-directional dataflow architecture inspired by Flux.
Behance Profile (Development)
https://www.behance.net/wellguimaraes
A few design jobs that I've done.
ArmadaDelivery (Development)
https://play.google.com/store/apps/details?id=com.armadadelivery.driver
An Uber for restaurants to ask for drivers to deliver their orders. I've worked in the back-end, front-end, and mobile development.

** The available link is for the driver app (Android).

Skills

Languages
ECMAScript (ES6), Java, HTML5, JavaScript, Sass, TypeScript, Kotlin, CSS3, C#
Frameworks
Jest, Redux, ASP.NET, Flux, Express.js, AngularJS
Libraries/APIs
jQuery, Handlebars, Node.js, React, Socket.IO, Riot.js, Sinon.JS, Pusher, Google Charts API, Quartz, Google Gson
Tools
Babel, Visual Studio, Mocha, WebStorm, Gulp.js, IntelliJ IDEA, Git, Webpack, NPM, Hangfire, Adobe Illustrator, TFS, Sketch, Gradle, Travis CI
Paradigms
Design Patterns, Object-oriented Programming (OOP), Scrum, Extreme programming, Test-driven Development (TDD), REST, Agile Software Development, Domain-driven Design, Functional Programming
Platforms
Android, Azure, Amazon Web Services (AWS)
Storage
MySQL, MongoDB, Microsoft SQL Server, Elasticsearch
Other
Enzyme, SVG

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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