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

Software Developer in Florianópolis - State of Santa Catarina, Brazil

Member since April 7, 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 he codes with flair and visual appeal in the front end. Wellington is passionate about challenges, innovation, and making people's lives easier. He communicates well and has worked in big and small teams.
Wellington is now available for hire


  • AvantStay
    TypeScript, Node.js, MobX, React
  • Plasmic.app
    React, Node.js, SCSS, Next.js
  • X-Team
    FFmpeg, PostGIS, PostgreSQL, Node.js, Redux, React



Florianópolis - State of Santa Catarina, Brazil



Preferred Environment

Git, IntelliJ IDEA, WebStorm, MacOS

The most amazing...

...piece of software I've made was a platform to process video recording and telemetry data from air missions and show video and map plotting on a web UI.


  • Lead Software Engineer

    2017 - PRESENT
    • Created the whole web platform's front end from the ground up.
    • Managed an entirely remote team to build back-office systems.
    • Coordinated and collaborated with the design team on all digital projects.
    Technologies: TypeScript, Node.js, MobX, React
  • Senior Software Engineer

    2020 - 2021
    • Proposed and collaborated on the implementation of the new way to organize pages, components, and artboards.
    • Proposed and implemented the new layout control panel.
    • Introduced several improvements to variants management.
    • Contributed to many other UI and UX improvements.
    Technologies: React, Node.js, SCSS, Next.js
  • Software Engineer

    2017 - 2017
    • Created a software to handle telemetry data and video recordings from helicopters to show missions in a comprehensive way for analysis.
    Technologies: FFmpeg, PostGIS, PostgreSQL, Node.js, Redux, React
  • Full-stack Developer

    2016 - 2016
    ArmadaDelivery (via Toptal)
    • Created a 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: Firebase Cloud Messaging (FCM), GCM, Retrofit, Pusher, Kotlin, Android, Mongoose, MongoDB, Redux, React, Express.js, Node.js
  • Full-stack Web Developer

    2015 - 2016
    • 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: Riot.js, Webpack, Gulp, Sass, CSS3, HTML5, jQuery, JavaScript, Oracle, Microsoft SQL Server, NHibernate, NUnit, ASP.NET MVC, C#
  • Co-founder | CTO

    2014 - 2015
    • 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 an 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: Android, Java, Sass, CSS3, HTML5, TypeScript, React, Google Cloud Messaging, WebSockets, Entity Framework, NoSQL, Microsoft SQL Server, Web API, Node.js, C#
  • 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: Handlebars, jQuery, Less, CSS3, HTML5, Microsoft SQL Server, Entity Framework, ASP.NET MVC, C#
  • Web/Android Developer

    2013 - 2013
    • 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 review 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: ORMLite, SQLite, Android, jQuery, JavaScript, Elasticsearch, MySQL, Web API, ASP.NET MVC, Entity Framework, C#
  • 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: JavaScript, Java, C#



  • Languages

    Less, GraphQL, CSS, ECMAScript (ES6), TypeScript, Kotlin, JavaScript, Java, Sass, HTML5, C#, CSS3, HTML, SCSS, SQL
  • Frameworks

    Jest, Redux, Express.js, Next.js, ASP.NET MVC, React Native, Cypress.io, Swagger, NUnit, NHibernate, ORMLite
  • Libraries/APIs

    jQuery, Sinon.JS, Pusher, React, Node.js, Riot.js, Socket.IO, MobX, AWS Amplify, Emotion Library, Web API, Entity Framework, Handlebars, Retrofit, GCM, FFmpeg
  • Tools

    Webpack, Babel, NPM, Microsoft Visual Studio, Travis CI, Git, IntelliJ IDEA, Gulp, WebStorm, Mocha, Figma, GitHub, GitLab, TFS, Hangfire, Sketch, Adobe Illustrator, Google Cloud Messaging, Mongoose, Firebase Cloud Messaging (FCM), Gradle
  • Paradigms

    Test-driven Development (TDD), Design Patterns, Scrum, Extreme Programming, Agile Software Development, REST, Object-oriented Programming (OOP), Unit Testing, UI Design, UX Design, Functional Programming
  • Platforms

    PC, Android, Amazon Web Services (AWS), MacOS, Azure, Oracle, Microsoft
  • Storage

    MySQL, MongoDB, NoSQL, PostgreSQL, PostGIS, Elasticsearch, Microsoft SQL Server, Amazon DynamoDB, SQLite
  • Other

    Enzyme, Styled-components, Storybook, SVG, Domain-driven Design (DDD), WebSockets


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

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