Rafael Mathias Marinho, Developer in São Paulo, Brazil
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Rafael Mathias Marinho

Verified Expert  in Engineering

Front-end Developer

Location
São Paulo, Brazil
Toptal Member Since
May 31, 2022

Rafael is a senior front-end engineer with almost ten years of experience building and maintaining responsive websites. He started in 2012 as a full-stack web developer working with many technologies but specializing over time in HTML, CSS, JavaScript, TypeScript, React and React Native. Rafael is well-versed in Scrum and Agile, always paying attention to details and quality to maintain testable and reusable code and components.

Web DevelopmentJavaScriptHTML5CSSReactAgile Software DevelopmentGitHubReact ReduxJestTypeScriptVisual Studio Code (VS Code)GraphQLProgrammingUI TestingEnzymeGatsbyJS

Portfolio

Hotmart
JavaScript, React, HTML5, CSS, Web Components, Redux, Redux Toolkit, Jest...
Stefanini Group
JavaScript, React, RefluxJS, Redux, Enzyme, Jasmine, Jest, Webpack, Jenkins...
Tríade Soluções Inteligentes
C#, Windows Forms (WinForms), Entity Framework, SQL, JavaScript, CSS, HTML5...

Experience

Web Development - 9 yearsJavaScript - 9 yearsAgile Software Development - 5 yearsReact - 5 yearsStyled-components - 3 yearsReact Native - 2 yearsJest - 2 yearsTypeScript - 1 year

Availability

Part-time

Preferred Environment

Visual Studio Code (VS Code), TypeScript, React, React Native, JavaScript, Styled-components, Antd, Zustand, React Redux, Jest, HTML

The most amazing...

...thing I've developed is a dashboard with many charts and real-time data over pages set by users to show components in an automated monitor.

Work Experience

Senior Front-end Web Developer

2021 - 2021
Hotmart
  • Developed the public API documentation using GatsbyJS.
  • Created features inside the platform as webhook configurations.
  • Fixed minor bugs and implemented new features into the user's platform.
Technologies: JavaScript, React, HTML5, CSS, Web Components, Redux, Redux Toolkit, Jest, React Testing Library, Webpack, Agile Software Development, Design Systems, Gatsby, HTML, Figma, GitHub, GraphQL

Front-end Web Developer

2016 - 2021
Stefanini Group
  • Developed a dashboard with charts and real-time data over pages, enabling users to set some components to show them in an automated monitor.
  • Helped the front-end core team maintain all of the quality gates by reviewing codes and creating unit and automated tests while collaborating actively with the QA team.
  • Tracked and fixed bugs and supported side projects such as an app based on React Native.
Technologies: JavaScript, React, RefluxJS, Redux, Enzyme, Jasmine, Jest, Webpack, Jenkins, HTML, Figma

.NET Full-stack Developer

2016 - 2016
Tríade Soluções Inteligentes
  • Built a system emphasizing Windows Forms using .NET C#, Entity Framework, and SQL Server.
  • Developed various automated features of financial reports.
  • Fixed bugs and contributed to the system's significant improvements.
Technologies: C#, Windows Forms (WinForms), Entity Framework, SQL, JavaScript, CSS, HTML5, jQuery, HTML

.NET Full-stack Web Developer

2012 - 2015
Am4
  • Developed a website and intranet for a movie theater company where people could see the scheduled sessions and buy tickets.
  • Implemented new features and fixed bugs on different shopping malls' websites.
  • Developed numerous landing pages, blogs, and corporate websites.
Technologies: C#, .NET, ASP.NET, VBScript, Entity Framework, JavaScript, SQL, HTML5, CSS, jQuery, Razor Pages, HTML

Public API documentation

https://developers.hotmart.com/
A GatsbyJS-based application for users to consume the API documentation.

I acted as the front-end developer working together with two other front-end developers to build and improve this tool and dashboards.

Languages

JavaScript, HTML5, CSS, HTML, TypeScript, C#, Java, SQL, PHP, VBScript, CSS3, GraphQL

Libraries/APIs

React, React Redux, Antd, Entity Framework, jQuery, Windows Forms (WinForms), RefluxJS, React Testing Library

Other

Web Development, Styled-components, Zustand, Programming, UI Testing, Enzyme, Web Components, Design Systems, Gatsby

Frameworks

React Native, Jest, .NET, ASP.NET, Razor Pages, Redux, Jasmine, ASP.NET MVC 4

Tools

GitHub, Webpack, Jenkins, Redux Toolkit, Figma

Paradigms

Agile Software Development

Platforms

Visual Studio Code (VS Code)

Storage

Oracle DBA

2011 - 2014

Bachelor's Degree in Computer Science

UniFOA - Rio de Janeiro, Brazil

2006 - 2007

Professional Degree in Software Development

Instituto de Cultura Técnica (ICT) - Rio de Janeiro, Brazil

MARCH 2017 - PRESENT

Certified Scrum Master

Scrum Alliance

MARCH 2015 - PRESENT

Microsoft Certified Professional

Microsoft

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