Marcelo Gomes Martins, Developer in Poznań, Poland

Marcelo Gomes Martins

Front-end Developer

Poznań, Poland
Toptal Member Since
April 26, 2019

Marcelo is a front-end developer with over a decade of experience building pixel-perfect websites. He's worked across desktop and mobile, developing web and mobile apps. Marcelo is also an expert at solving complex UI problems along the way and enjoys seeing his work in action.

Marcelo is available for hire
Hire Marcelo


Casper (via Toptal)
HTML, Sass, Redux, React
AWS AppSync, Redux, React, JavaScript, CSS, HTML
Epam Systems (Gdansk, Poland)
CSS, HTML, Redux, React


Poznań, Poland



Preferred Environment

Chrome, Visual Studio Code (VS Code), Vim Text Editor

The most amazing...

...thing I've built was a complex interface for a chat application for a major eCommerce in the US.

Work Experience

2019 - 2019

Front-end Developer

Casper (via Toptal)
  • Create new components using React.
  • Made adjustments on the markup HTML to improve the user experience and focusing on SEO.
  • Maintained a responsive layout.
  • Created new pages for AB tests.
Technologies: HTML, Sass, Redux, React
2018 - 2019

Front-end Developer

  • Built a complex responsive UI for a chat application.
  • Developed a React application using Flow as a static type checker.
  • Conducted unit testing with Jest and the React Testing Library.
Technologies: AWS AppSync, Redux, React, JavaScript, CSS, HTML
2017 - 2018

Senior Front-end Engineer

Epam Systems (Gdansk, Poland)
  • Developed complex user interfaces using React and Redux.
Technologies: CSS, HTML, Redux, React
2015 - 2015

Senior Front-end Engineer

Upboox Technology Company (Rio de Janeiro, Brazil)
  • Created a social network's UI using Node.js, Express,js, and React.
Technologies: Express.js, React, Node.js, JavaScript, CSS, HTML
2013 - 2014

Senior Software Engineer

Aragão Publicidade (Rio Grande do Norte, Brazil)
  • Created websites and web applications.
Technologies: React, Ruby on Rails (RoR), JavaScript, CSS, HTML
2012 - 2013

Senior Software Engineer

OvermediaCast (São Paulo, Brazil)
  • Created a website in Ruby on Rails, HTML, and CSS.
  • Developed a type of video analytics software with Angular.
  • Constructed an analytics server with Sinatra using MongoDB over Heroku.
Technologies: Heroku, MongoDB, Sinatra, JavaScript, CSS, HTML, Ruby on Rails (RoR)

Experience for Morkriya

I implemented a complex UI for a chat application for the site, | React Native Application
I've built this React Native application (Android/iOS). See more at the link.

Epam Systems

For Epam Systems, I worked in a team to build a system for the UBS Bank using React components and a React data table on top of a semantic HTML markup and styles using LESS.



HTML5, CSS, Sass, JavaScript, HTML






PSD to HTML, Photoshop CC 2019


React Native, Redux, Chrome, Express.js, Ruby on Rails (RoR), Sinatra


React, jQuery, Node.js, Google Maps API


Vim Text Editor, AWS AppSync


Visual Studio Code (VS Code), Heroku, Linux, MacOS