Willian R.

FullStack Developer

Willian is a FullStack Developer with a front-end focus and five years of commercial experience. He has expertise in frontend development using React, Next.js, and React Native, and is proficient in various technologies, programming languages, and frameworks.

Throughout his career, Willian has worked with companies such as Spin, Yahoo, and other Brazilian enterprises, where he has created performant and reliable applications for customers. His broad skill set and experience make him a valuable asset in developing high-quality software solutions.

Principale expertise

  • HTML / CSS 5 ans
  • JavaScript
    JavaScript 5 ans
  • Next.js
    Next.js 4 ans

Autres compétences

  • Nest.js
    Nest.js 2 ans
  • PostgreSQL
    PostgreSQL 2 ans
  • Electron
    Electron 2 ans
Willian

Willian R.

Brazil

Commencer

Expérience sélectionnée

Emploi

  • Frontend Engineer

    Yahoo! - 2 années 10 mois

    • Implemented code splitting and cleaned up the application bundle, resulting in significant performance enhancements
    • Successfully optimized web performance for a React project by reducing bundle size by 88.5% and load time by 91.1%
    • Improved time to interact by 67.4%, resulting in a faster and more efficient user experience
    • Successfully migrated state management from alt.js to Redux, resulting in improved performance and a streamlined codebase
    • Demonstrated keen attention to detail and proactive problem-solving skills by identifying possible performance improvements, reporting to the manager, and getting approval to fix it
    • Worked to migrate from JavaScript to TypeScript, improving code maintainability, reducing bugs, and enabling better collaboration with the team

  • Frontend Developer

    Spin - 5 mois

    • Redesigned a section of the internal operations tool responsible for the entire scooter fleet
    • Planned and also developed a new trip details page, adding lots of useful information. The information is now helping customer support analyze customers' requests. The feature includes a trip timeline with the scooter's position on the map, even the ability to replay the trip
    • Created a filter based on the proximity of two scooter locations in a trip to prevent two dots from being displayed too close to one another
    • Created an estimated speed calculation for a vehicle on a trip
    • Developed a new and more compact header to help internal users find what they want inside the system

    Les technologies:

    • Les technologies:
    • JavaScript JavaScript
    • React.js React.js
    • Ruby on Rails Ruby on Rails
    • Next.js Next.js

  • Frontend Developer

    CWI - 2 mois

    • Migrated an eCommerce application from React with react-router to Next.js significantly improves performance and SEO optimizations
    • Improved the application's performance in updating global states by migrating them from Recoil to Redux
    • Refactored an Auth mechanism between a React Native WebView and a React application, which resulted in a seamless experience for the user

    Les technologies:

    • Les technologies:
    • JavaScript JavaScript
    • React Native React Native
    • Redux.js Redux.js
    • Next.js Next.js
    • OAuth2 OAuth2

  • Fullstack Developer

    Gazin Tech - 1 an 9 mois

    • Fixed an issue reported by Google in time to prevent the main website from being removed from Google Search results, avoiding the negative impact on sales that this could represent

    • Created an institutional website for the finance branch of the company with Next.js allows the client to customize the content and sections of each page on demand and create new pages using Strapi, the content management system (CMS)

    • Built an automated pipeline that makes code analysis with some notifications to remind the developer to create tests or to update some required files

    Les technologies:

    • Les technologies:
    • JavaScript JavaScript
    • React.js React.js
    • React Native React Native
    • Next.js Next.js
    • CMS
    • Strapi Strapi
    • Chakra UI Chakra UI

  • Fullstack Developer

    Smarppy - 3 années

    • Built a to-do web and mobile application for a client using React and React Native, with notifications and email reminders based on the user's timezone, with Node.js in the backend

    • Worked on an internal tool to track tasks and company resources with React.js

    • Worked on a church mobile app built with React Native to manage meetings and dominical events

    • Created an application to help pick items from the clients' orders for a smart bakery

    • Created a Discord bot to help the company developers see if their merge requests were approved and tested or not

    Les technologies:

    • Les technologies:
    • JavaScript JavaScript
    • React.js React.js
    • Node.js Node.js
    • React Native React Native
    • HTML / CSS

Éducation

  • License ès sciencesComputer Science

    Universidade Tecnológica Federal do Paraná · 2017 - 2021

Portefeuille

  • - 1
  • - 1
  • - 1

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