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Rogério Araújo, Enterprise Architect and Software Developer in Goiânia - State of Goiás, Brazil
Rogério Araújo

Enterprise Architect and Software Developer in Goiânia - State of Goiás, Brazil

Member since November 5, 2012
Rogério is a full-stack developer with 15 years of experience in software development and architecture. He has worked on several projects, including mobile, desktop, and enterprise search applications, for customers in Brazil and globally. Rogério has also contributed to projects ranging from enterprise search, retail, ticket sales, sports training, finance, and blockchain.
Rogério is now available for hire
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Portfolio

  • Yieldwatch
    Web3.js, React, Node.js, PostgreSQL, MUI (Material UI), TypeORM, Express.js
  • Worthy Financial
    React Native, React, iOS, Android Studio, Android, Xcode, Tailwind CSS...
  • Leaf Logix
    Docker Compose, Microsoft SQL Server, Moment.js, TypeScript, LINQ, C#...

Experience

Location

Goiânia - State of Goiás, Brazil

Availability

Full-time

Preferred Environment

Visual Studio Code, Git, Node.js, MongoDB, PostgreSQL, GraphQL, React, React Native, TypeScript, NestJS

The most amazing...

...thing I've done is create a social media network for sharing travel experiences and an app for buying and selling private bonds.

Employment

  • Senior Software Engineer

    2021 - PRESENT
    Yieldwatch
    • Wrote an admin dashboard to manage projects, products, product types, tokens, and other decentralized finance-related investments.
    • Created API and back-end-related jobs to read blockchain over explorers, like BscScan, and read token information and token pairs to help with asset calculation.
    • Made several UI improvements on the main decentralized finance dashboard and evaluated potential additions to increase tool value.
    Technologies: Web3.js, React, Node.js, PostgreSQL, MUI (Material UI), TypeORM, Express.js

  • React Web and React Native Developer

    2021 - 2022
    Worthy Financial
    • Worked on implementing the second version of the web and mobile apps.
    • Managed the Microsoft App Center configuration for staging and production builds.
    • Added complete support for multiple environment configurations.
    Technologies: React Native, React, iOS, Android Studio, Android, Xcode, Tailwind CSS, reacthooks, React Native Reanimated, react-spring, Auth0, Plaid, React Query, APIs, Zapier, Auth0 API, Mobile Applications

  • Senior Software Engineer

    2019 - 2021
    Leaf Logix
    • Developed a mobile app and integrated it with label and receipt printers.
    • Created improvements and fixes for a POS app, the back end of another app, and SQL queries.
    • Created unit tests. Also created a Docker container to make it easy to use and deploy an ERP database locally to help the user on daily development tasks.
    • Forked, improved, and fixed open source libraries in favor of project needs.
    Technologies: Docker Compose, Microsoft SQL Server, Moment.js, TypeScript, LINQ, C#, JavaScript, Microsoft Visual Studio, .NET, ASP.NET Web API, SQL, React Native, Technical Hiring, Code Review, Interviewing, Source Code Review, REST APIs, Next.js, HTML, CSS, API Integration, Node.js, RESTful APIs, APIs, Mobile Applications

  • Senior Software Engineer

    2018 - 2018
    Power Home Remodeling Group
    • Developed a React Native app for Android devices. Added support for CI builds and created unit tests.
    • Helped guide the new app architecture's development. I proposed and implemented the application state management on top of Redux and Redux Sagas, which also integrated with an on-device database to persist user messages.
    • Forked, improved, and fixed open source libraries in favor of project needs.
    Technologies: Gradle, CocoaPods, Swift, Android, Java, JavaScript, React Native, Technical Hiring, Code Review, Interviewing, Source Code Review, HTML, CSS, API Integration, RESTful APIs, APIs, Mobile Applications

  • Senior Software Engineer

    2017 - 2017
    DoseDr
    • Developed a mobile app using React Native, written entirely from scratch.
    • Proposed libraries to be used. This is one of the projects where redux-sagas were used.
    • Used Realm for data storage which is fast and compact for application needs.
    • Created reusable reducers and sagas, improving codebase maintenance.
    Technologies: Realm, Redux-Saga, Redux, React Native, HTML, CSS, API Integration, RESTful APIs, APIs, Mobile Applications

  • Senior Software Engineer

    2016 - 2017
    Digital Gravity Media
    • Developed an Android app.
    • Added beta testing support with Testfairy.
    • Created reusable business logic with libraries like Refit.
    • Proposed app design.
    • Used libraries like ModernHttpClient to speed up network calls and NodaTime to make datetime handling easier.
    • Worked with gamification on the app.
    • Managed code readability with the help of Cheeseknife for view injection.
    • Managed app beta testing and preparing for store release.
    Technologies: TestFairy, C#, Xamarin, HTML, CSS, RESTful APIs, APIs, Mobile Applications

  • Senior Software Engineer and Architect

    2016 - 2017
    Live2Leave
    • Designed and developed a solution architecture. Developed a landing page alongside background jobs and integration with geospatial data.
    • Added several components to the solution architecture, like Heroku, PostGIS, and Algolia for data indexing and search, as well as Node.js and React.
    • Forked, improved, and fixed open source libraries in favor of project needs, mainly React Native-related libraries to solve very specific software limitations.
    Technologies: Redux, Algolia, Heroku, Mocha, Enzyme, React, React Native, Technical Hiring, Code Review, Interviewing, Source Code Review, REST APIs, HTML, CSS, Software Architecture, Architecture, Technical Leadership, API Integration, Software Design, Node.js, RESTful APIs, APIs, Mobile Applications

  • Senior Software Engineer

    2016 - 2016
    Treasure
    • Developed an iOS app.
    • Performed maintenance on an API.
    • Proposed mobile app design improvements.
    • Maintained a back-end API.
    • Proposed usability improvements.
    Technologies: Node.js, Stripe, React Native, REST APIs, HTML, CSS, Technical Leadership, API Integration, RESTful APIs, APIs, Mobile Applications

  • Senior Software Engineer

    2016 - 2016
    Refined Edge Solutions
    • Developed for mobile and web.
    • Created reusable components for the UI.
    • Implemented social networking features.
    • Implemented content sharing features.
    • Proposed design improvements for better handling of authentication and sensitive information persistance.
    Technologies: Node.js, Redux, React Native, HTML, CSS, RESTful APIs, Mobile Applications

  • Senior Software Engineer, Architect, and Product Manager

    2015 - 2016
    PayCertify
    • Architected and developed a fax processing engine. Led the team and managed products. Integrated with payment gateways like NMI and Authorize.net.
    • Managed the back end on AWS by fixing logging code on the server application and improving application execution.
    • Added support to OCR using Tesseract to automate the processing of order information for fraud detection.
    Technologies: Amazon Web Services (AWS), Cucumber, RSpec, Sidekiq, Redis, AWS, jQuery, Bootstrap, MongoDB, Ruby, Ruby on Rails (RoR), REST APIs, HTML, CSS, Technical Leadership, Software Design

  • Senior Android Developer

    2015 - 2015
    MEGA, Inc.
    • Integrated with a Parse back end.
    • Integrated with Stripe for payment processing.
    • Handled continuous delivery with TestFairy.
    Technologies: Gradle, Crashlytics, Parse, Stripe, Android Studio, REST APIs, HTML, CSS, Mobile Applications

  • Senior Android Developer

    2015 - 2015
    ConteGoView
    • Created reusable code.
    • Integrated in-app payments.
    • Integrated Google Cloud Messaging.
    • Consumed a RESTful API with Retrofit.
    • Handled dependency injection with Roboguice.
    Technologies: Google Cloud Messaging, Retrofit, RoboGuice, Android Studio, HTML, CSS, Mobile Applications

  • Senior iOS Developer

    2015 - 2015
    App Factory
    • Integrated RESTful APIs.
    • Handled Apple Pay payments.
    • Proposed mobile app design.
    • Worked with integration tests using XCTest.
    Technologies: CocoaPods, JSONModel, AFNetworking, Apple Pay, Stripe, Objective-C, iOS, HTML, CSS, API Integration, Mobile Applications

  • Senior Software Engineer

    2015 - 2015
    Kocomojo
    • Handled web development using Elixir and Phoenix framework on the back end and Angular with TypeScript on the front end.
    • Handled unit testing with ExUnit.
    • Integrated Chargify to handle subscriptions and recurring billing.
    • Implemented continuous integration with Travis.
    • Implemented test-driven development with ExUnit.
    Technologies: TypeScript, Angular, Test-driven Development (TDD), exunit, Phoenix, PostgreSQL, Erlang, Elixir, REST APIs, HTML, CSS, RESTful APIs

  • Senior Software Engineer

    2015 - 2015
    Fleetclean, Ltd.
    • Integrated Cocoapods for dependency management.
    • Maintained CodeIgniter-based web services.
    • Developed environment management with Docker.
    • Added integration tests with KIF.
    Technologies: MySQL, Docker, CodeIgniter, Objective-C, Core Data, Flurry, CocoaPods, Xcode, iOS, REST APIs, HTML, CSS, API Integration, RESTful APIs

  • Senior Software Engineer

    2014 - 2014
    MODS Management
    • Architected and developed a solution involving Android applications and RESTful web APIs on top of ASP.NET MVC, then maintained reusable code.
    • Kept track of development tasks over a GitHub issues tracker as a solo initiative.
    • Handled acceptance testing with Robotium and proposed improvements on UI/UX.
    Technologies: Ninject, SQLite, ORMLite, RoboGuice, Java, LINQ to SQL, Gradle, Android Studio, TestFairy, ASP.NET Web API, IIS, GitHub, Microsoft SQL Server, Android, REST APIs, HTML, CSS

  • .NET Developer

    2014 - 2014
    Peter Franklin
    • Maintained a tool to generate a Google Transit Feed.
    Technologies: Microsoft Access, Google Docs, Windows Forms, C#, HTML, CSS

  • .NET Developer

    2014 - 2014
    Robins Golf Logistix
    • Added new features to a golf coach academy portal.
    • Reworked an admin area look and feel using Ajax, Harbour, and .NET-related technologies.
    • Handled front-end development using web standards like MVC, repository pattern, and others.
    Technologies: BrainTree, SendGrid, Bower, Bootstrap, Amazon Web Services (AWS), AppHarbor, Less, jQuery, ASP.NET MVC, REST APIs, HTML, CSS, Microsoft Visual Studio

  • Senior C# Developer

    2013 - 2014
    American Mortgage Consultants, Inc. (via Toptal)
    • Developed an income analysis application using ASP.NET MVC.
    • Maintained a database model of mortgage-related data.
    • Handled UI development using jQuery UI widgets. Used Ajax to push data to the server and implemented using ASP.NET Web API.
    Technologies: TFS, ASP.NET Web Forms, MVC Razor, Microsoft SQL Server, jQuery, CodeSmith, ASP.NET MVC, REST APIs, HTML, CSS, Microsoft Visual Studio

  • Senior iOS Developer

    2012 - 2012
    Worry Free Labs, Inc.
    • Developed iOS components.
    • Integrated GitHub libraries.
    • Managed TestFlight.
    • Managed device and profile.
    • Made project estimates.
    Technologies: Objective-C, iOS, HTML, CSS, Mobile Applications

  • Software Developer

    2012 - 2012
    Tecnonet
    • Developed a FAST ESP back end to provide job vacancy and resume searches.
    • Designed an ASP.NET-based search front end using .NET and related libraries.
    • Created PowerShell and batch scripts for pushing database content to a search engine indexer.
    • Built a search front-end prototype in pure ASP.NET with user controls.
    Technologies: Microsoft SQL Server, jQuery, FAST ESP, ASP.NET, ASP, HTML, CSS, Microsoft Visual Studio

  • Senior Software Engineer and Architect

    2007 - 2011
    Druid Internet Systems
    • Created an iOS application, a Fandango-like app, for a Brazilian customer.
    • Developed an enterprise search solution for a Brazilian mobile carrier site search and call center portal content search.
    • Developed an internet banking front end on top of JavaServer Faces.
    • Architected and developed a web admin module and REST service for URL categorization with FAST ESP content processing integration via Python scripts (document stages).
    • Architected, installed, and supported an Atlassian ecosystem.
    • Developed a restaurant reservation site on top of ASP.NET MVC.
    Technologies: Eclipse, jQuery, Apache Tomcat, JBoss, Hibernate, Spring, MySQL, Oracle, PostgreSQL, SQLite, Android, iOS, XML, FAST ESP, Python, Java, HTML, CSS, Software Architecture, Architecture, Technical Leadership, Software Design, Spring JDBC, Spring MVC, Android SDK, Mobile Applications, JSF

  • Software Engineer

    2006 - 2007
    FAST Search and Transfer
    • Developed a search front end for the Financial Times, a risk assessment portal prototype.
    • Built a search front end on top of FAST ESP for Vivo, a Brazilian mobile carrier.
    • Co-authored Project Jigsaw, a Java framework for fast development of search engine front ends on top of FAST ESP and JSF.
    • Created FAST ESP stages in Python to enrich indexed documents with appropriate metadata.
    Technologies: Python, MySQL, FAST ESP, Hibernate, JSF, Java, HTML, CSS, Technical Leadership, Spring JDBC, Spring MVC, Spring

  • Senior Software Developer and Architect

    2005 - 2006
    Court of Justice of Goiás – Brazil
    • Developed and maintained several web applications built on top of PHP and Java languages. JSF, Hibernate, and XDoclet powered all Java applications.
    • Implemented a proof of concept solution on top of Java Portlets with Liferay Portal.
    • Developed a bodyguard library—a set of EL functions to help integrate Spring Security with Facelets.
    • Architected an SSO solution and developed PHP classes to facilitate the integration of a PHP application with JOSSO.
    Technologies: PostgreSQL, PHP, Java, HTML, CSS, Software Architecture, Architecture, Technical Leadership, Spring JDBC, Spring MVC, Spring, JSF

  • Software Developer

    2000 - 2005
    C&S Computadores e Sistemas
    • Handled ERP solution development using Delphi and Oracle.
    • Created a small set of ASP.NET 1 controls for internal use.
    • Built an eCommerce product on top of PHP and MySQL.
    • Devised a proof of concept application on top of JBoss/J2EE.
    • Developed a field of sales application with .NET Compact Framework.
    Technologies: .NET, Palm OS, SuperWaba, J2ME, PHP, ASP.NET, Oracle, Delphi, HTML, CSS, Technical Leadership, Spring JDBC, Spring MVC, Microsoft Visual Studio, Spring, Mobile Applications

Experience

  • BookSearch
    https://github.com/ararog/BookSearch

    A Perl web application written using a Catalyst framework. This web application is used to search for PDFs indexed by Elasticsearch. The goal of this project was for me to learn and practice Perl and Elasticsearch.

  • WebSocket Rails – Windows Phone
    https://github.com/ararog/WebSocketRails-WP

    A WebSockets Rails client port for Windows Phone 8 using WebSocket4Net and Json.NET. This is a small project to self-educate on Ruby and Ruby on Rails and train my skills in .NET and related libraries.

  • WebSocket Rails – Android
    https://github.com/ararog/WebSocketRails-Android

    A Websockets Rails client port for Android using Jackson for JSON serialization and AndroidAsync for WebSockets communication. This is another open-source project that I created to self-educate and improve my Android and iOS development skills.

  • XML Builder
    https://github.com/ararog/xmlbuilder

    A library that provides a DSL for XML authoring on the .NET platform. This library intends to make XML authoring way more intuitive using a builder pattern. It is inspired by the java-xmlbuilder library.

  • Ingresso.com for iOS
    https://itunes.apple.com/br/app/ingresso-com-filmes-cinemas/id1165054492?mt=8

    A Fandango-like iOS app that enables Brazilian customers to browse movies and theaters and purchase tickets. It is 100% written in Objective-C code, interacting with REST APIs serving XML content at the time of app conception.

  • UnRAR for iOS
    https://github.com/ararog/Unrar4iOS

    This is a port of unRAR library to the iOS platform. Heavily based on CPP implementation, it also inspired the creation of a fork that has several improvements in place. It also has archive and unarchive functions available.

  • Solr Update Processors
    https://github.com/ararog/solr-updateprocessors

    A project that aims to provide several scripts to act as update processors for use at index time on Apache Solr 4. Most of the scripts are in Python, which can be run using the Java implementation name Jython.

  • EasyLight

    Application built as a freelancer for an Italian customer, EasyLight is an application that just help the user to use Playbook to put some light in a dark place.

  • Telepass
    https://itunes.apple.com/br/app/telepass/id454224356?mt=8

    An iOS app used to buy tickets for a transport system in Italy.

  • Antibody Review
    http://www.antibodyreview.com/

    A PHP + Apache Solr-powered search back end which indexes data from a MySQL database containing antibody information.

  • Alamofire-RACExtensions
    https://github.com/ararog/Alamofire-RACExtensions

    An Alamofire extension to allow integration with ReactiveCocoa.

  • Flambo
    https://github.com/yieldbot/flambo

    Contributed with min, man, and take-order action implementations on the Flambo API.

  • MoneyBOT
    https://github.com/ararog/MoneyBOT

    A Slack bot that automatically converts quotations from US dollars to Brazilian reals and returns results to the Slack channel. Brazilian Toptalers heavily used this bot in Toptal community channels on Slack.

  • Verbo
    https://github.com/ararog/verbo

    An open-source collection of string utilities for Go. This library enables developers to implement string manipulation using functions such as Camelize, Capitalize, CleanDiacritics, Humanize, and several others.

  • TimeAgo
    https://github.com/ararog/timeago

    A small Go library to help build a human-readable representation of time duration. It is a library that calculates how much time has passed between two dates. The goal is to make time calculation an easier task.

  • RestInpector
    https://github.com/ararog/RestInspector

    A Qt-based application to test REST APIs

  • Clapit

    A social network app written on React Native.

  • Vivo Site Search
    http://www.vivo.com.br

    Developed the site search back end of www.vivo.com.br, a Brazilian mobile carrier, written in Java 6.

  • Curriculum.com.br Job Vacancy Search
    http://www.curriculum.com.br/vagas-emprego

    Job vacancy search built on top of FAST ESP enterprise search platform and ASP.NET, coded in C#.

  • Live2Leave

    A social network for travelers. Live2leave allow users to share travel experiences by creating notes, itineraries, see which countries they visited, build a wishlist and much more.

  • React.js Best Practices and Tips by Toptal Developers (Publication)
    https://www.toptal.com/react/tips-and-practices
    This resource contains a collection of React.js best practices and React.js tips provided by our Toptal network members.
  • Toptal Mentor
    Rogério is a mentor in the Toptal Global Mentor’s Program. This program is a partnership between Toptal and General Assembly to provide high quality mentorship for students from minority and low income backgrounds who are looking to begin their careers as professional software engineers. Rogério shows commitment to diversity in tech by mentoring a General Assembly student every week for a year, covering everything from coding tips and tricks to advice on making it in the industry.

Skills

  • Languages

    Ruby, C#, Java, Objective-C, PHP, JavaScript, HTML, CSS, Python, TypeScript, Elixir, SQL, TypeScript 3, XML, Less, Erlang, Swift, Perl, GraphQL, Go, Kotlin, Dart

  • Frameworks

    React Native, Android SDK, ASP.NET MVC, ASP.NET, Spring, JavaServer Faces, Ruby on Rails (RoR), Redux, Loopback, Next.js, Spring Boot, Flask, NestJS, Laravel, ASP, JSF, .NET, MVC Razor, ASP.NET Web Forms, ASP.NET Web API, ORMLite, Core Data, Phoenix, Angular, AFNetworking, JSONModel, Bootstrap, Grails, Tailwind CSS, MUI (Material UI), Express.js, Flutter, Gin-Gonic

  • Libraries/APIs

    Node.js, React, LINQ, CocoaPods, RoboGuice, REST APIs, Facebook iOS SDK, Intercom API, Auth0 API, React Redux, Windows Forms, Flurry, Stripe, Retrofit, Sidekiq, Redux-Saga, RxJS, Dwolla API, react-spring, Web3.js

  • Tools

    Ninject, Eclipse IDE, Microsoft Visual Studio, Docker Compose, NPM, Gradle, NGINX, lighttpd, Apache Solr, Autofac, Zapier, Mongoose, Apache Tomcat, Visual Studio, Mercurial, CodeSmith, TFS, SendGrid, Google Docs, GitHub, Android Studio, LINQ to SQL, Xcode, Google Cloud Messaging, Crashlytics, RSpec, Cucumber, Mocha, Auth0, Plaid, Git, Kafka Streams

  • Paradigms

    Object-oriented Programming (OOP), Agile Software Development, Functional Programming, Mobile Development, Test-driven Development (TDD), DevOps, Agile, Lambda Architecture

  • Platforms

    MacOS, Windows, Android, iOS, Linux, Xamarin, Amazon Web Services (AWS), Oracle, FAST ESP, JBoss, Eclipse, AppHarbor, TestFairy, Docker, Parse, Heroku, Algolia, Visual Studio Code, Kubernetes, Amazon

  • Other

    Enzyme, Apache Commons, API Integration, RESTful APIs, APIs, Mobile Applications, LogRocket, React Query, Software Architecture, Architecture, Technical Leadership, Software Design, BrainTree, IIS, exunit, Apple Pay, AWS, Technical Hiring, Code Review, Interviewing, Source Code Review, reacthooks, React Native Reanimated, IP Networks, Server Configuration, Business Processes, Organizational Design, IT Governance, TypeORM, Nx, Vercel, Product Management, Personal Branding

  • Storage

    PostgreSQL, MySQL, SQLite, Microsoft SQL Server, Elasticsearch, MongoDB, Redis, Realm

Education

  • MBA Degree in IT Management
    2014 - 2015
    IPOG - Goiânia, Brazil
  • Bachelor's Degree in Computing
    2001 - 2005
    Universidade Salgado de Oliveira - Goiânia, Brazil

Certifications

  • Go: The Complete Developer's Guide (Golang)
    DECEMBER 2022 - PRESENT
    Udemy
  • GraphQL: Criando APIs Profissionais e Flexíveis
    DECEMBER 2022 - PRESENT
    Udemy
  • The Complete Elixir and Phoenix Bootcamp
    NOVEMBER 2022 - PRESENT
    Udemy
  • The Complete Guide to Becoming a Software Architect
    SEPTEMBER 2022 - PRESENT
    Udemy
  • Learn Devops: Continuously Deliver Better Software
    OCTOBER 2016 - PRESENT
    Udemy
  • Client Needs and Software Requirements
    JANUARY 2016 - PRESENT
    Coursera
  • The Concise Product Management Course
    JANUARY 2016 - PRESENT
    Udemy
  • Build Apps with React Native
    JANUARY 2016 - PRESENT
    Udemy
  • Introduction to Personal Branding
    NOVEMBER 2015 - PRESENT
    Coursera
  • Introduction to Software Product Management
    OCTOBER 2015 - PRESENT
    Coursera
  • Software Processes and Agile Practices
    OCTOBER 2015 - PRESENT
    Coursera

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