Harrison Mendonça, AWS Developer in Rio de Janeiro - State of Rio de Janeiro, Brazil
Harrison Mendonça

AWS Developer in Rio de Janeiro - State of Rio de Janeiro, Brazil

Member since September 23, 2019
Harrison is a front-end developer with 13 years of experience developing apps, websites, and interactive installations. He founded Grama, a front-end services company, and Cammada, an online marketplace for 3D printing. Harrison studied Graphic Design in Brazil and devotes his extra time to research and experimentation.
Harrison is now available for hire


  • Mude Wellness Media
    Amazon Web Services (AWS), REST APIs, Redux, Prototyping, Firebase, Slack...
  • Grama
    Amazon Web Services (AWS), REST APIs, Redux, Prototyping, Firebase, Slack...
  • Descomplica
    Amazon Web Services (AWS), REST APIs, TypeScript, Flow, Redux, Prototyping...



Rio de Janeiro - State of Rio de Janeiro, Brazil



Preferred Environment

Sketch, Figma, Trello, Slack, GitHub, VS Code, MacOS

The most amazing...

...project I've created was a web app for more than one million people to access on the same day and check their grades to get access to University.


  • Front-end and Mobile Developer

    2018 - PRESENT
    Mude Wellness Media
    • Developed, published, and maintained the React Native app.
    • Set up CI/CD with Bitrise service and Slack integration.
    • Developed integration with services like Google Maps, Vimeo, and PagarMe (payment gateway).
    Technologies: Amazon Web Services (AWS), REST APIs, Redux, Prototyping, Firebase, Slack, Bitrise, CSS, WordPress, Scrum, AWS, Git, SCSS, Node.js, React Native, React, JavaScript, Cordova
  • Founder | CTO

    2015 - 2019
    • Led a team of five front-end developers. Hired and managed developers and a project owner.
    • Resolved complex development tasks that the team couldn't do.
    • Organized briefings and scrum calendar and finances.
    Technologies: Amazon Web Services (AWS), REST APIs, Redux, Prototyping, Firebase, Slack, CSS, Next.js, Three.js, Scrum, AWS, Git, PHP, MySQL, MongoDB, Express.js, SCSS, Node.js, React Native, JavaScript, WordPress, WebKit, React
  • Senior Developer

    2015 - 2018
    • Developed the main company platform to search and watch video lessons using React.
    • Served as the front-end lead of a tool that students could consult their national score of exams. On the launch day, it achieves one million users. Used AWS S3 to cache the dynamic data.
    • Created the thread feature (like Slack) for live chat during the online lessons.
    • Added visual animations and a responsive layout for landings.
    • Removed malware and saved the blog source code from a shared hosting service.
    Technologies: Amazon Web Services (AWS), REST APIs, TypeScript, Flow, Redux, Prototyping, Slack, CSS, Next.js, WordPress, Scrum, WebKit, AWS, Git, MongoDB, Express.js, Node.js, JavaScript, SCSS, GraphQL, Jest, React
  • Co-founder and CTO

    2015 - 2017
    • Developed a marketplace for 3D printing.
    • Improved shipping service with dedicated Lambda function in AWS.
    • Organized and implemented a design system for UI/UX.
    • Create a client-side calculation for volumes of a 3D file (.stl).
    • Developed an online calculator with form and graphics for printer shops to estimate their cost and price.
    Technologies: REST APIs, Prototyping, Slack, CSS, Scrum, Git, PHP, MySQL, SCSS, Node.js, JavaScript, Amazon Web Services (AWS), AWS, WordPress, Laravel, React
  • Senior Developer

    2012 - 2014
    • Developed interactive installations with a high level of interactive and visual effects.
    • Processed different user inputs like Kinect, electronic sensors, sound spectrogram, etc.
    • Managed the software for big companies, like Tesla, Solar City, and SXSW.
    • Contributed to video mapping with custom software developed in house.
    • Manage a junior developer and a designer to develop good solutions in a short timeframe.
    Technologies: REST APIs, Prototyping, WordPress, Git, PHP, MySQL, SCSS, Node.js, React, JavaScript, Flash ActionScript, Arduino, Processing, C++, OpenFrameworks


  • Mude - Wellness App

    As a unique front-end developer, I programmed the whole app with React Native with the support of just one back-end developer. It's full of features like scheduling classes, live classes, notifications, chat, payments, maps, geolocation, timezones, QR code, offline-first, and more.

  • Descomplica - Educational Platform

    This is the biggest education platform in Brazil for University entrance exams. It has more than a million access during the previous day of exams. Here I developed a lot with React; when React was still 0.14, good times. We also used GraphQL and developed the site from the sketch. I also did some small projects with different technologies to complete the whole environment.

  • JOCO - Webapp for Learning

    I ported the legacy version (Angular 1.5) to React, adding many animations and transitions and turning it into a SPA for a better experience. I also created a config JSON model to customize and embrace different brands allowing the product to scale.

  • Cammada - 3D Printing Marketplace

    In this project I was a co-founder then developed everything, front end, back end, and infrastructure. I also did a lot of design because we hired a designer for the base styles.

    There was one unique challenge, the shipping feature. It was plugged into two different systems with almost 30 requests for a specific price. So I solved it with a Lambda function in AWS that runs in parallel. Then 50 seconds of requests became two seconds.


  • Languages

    Flash ActionScript, CSS, JavaScript, SCSS, GraphQL, C++, Processing, TypeScript, PHP, Objective-C, Java
  • Frameworks

    Next.js, Redux, React Native, Jest, OpenFrameworks, Laravel, Express.js, Express.io
  • Libraries/APIs

    REST APIs, Node.js, React, Three.js
  • Tools

    VS Code, GitHub, Adobe Illustrator, Slack, Trello, Git, Figma, Flow, Sketch
  • Paradigms

  • Platforms

    WordPress, Arduino, Bitrise, Firebase, Amazon Web Services (AWS)
  • Other

    Prototyping, AWS, WebKit, Cordova
  • Storage

    MySQL, MongoDB


  • Bachelor's Degree in Graphic Design
    2005 - 2011
    Federal University of Rio de Janeiro - UFRJ - Rio de Janeiro, Brazil

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