Raphael – React, Node.js, JavaScript

A city-to-city Uber-like rideshare app that connects drivers and riders in Texas and Florida.

• Improved bonuses and cancellation fares correctness by 40% by implementing a feature for its Admin Web App to control and log records, with React.js, Nest.js, TypeScript, GraphQL and MongoDB;
• Reduced time for Tech Support to provide bonuses and cancellation fares by 50% by moving this feature from Retool to its own Admin App, with perceived performance, and better UI/UX with React.js, TypeScript and Tailwind CSS;
• Helped the company to reach profitability in the last months by making its frontend and backend more stable and assertive;
• Improved PageSpeed results by 40% by implementing SEO and Core Web Vitals improvements for the Hitch’s Web App, making it pass on both Mobile and Desktop platforms.

Raphael worked on a game-show-like App for both Android and iOS. The App lets users participate in a contest-like game show by answering questions after watching commercials, competing for prizes.

• Took over the App Development and made it into both Production and Android’s and iOS's App Stores in 2 months;
• Improved its Admin Web App performance by 30% by using React with TanStack Query hooks;
• Moved lots of App Code to Firebase, making the App more stable as it does not need too many updates anymore;
• Implemented complex business rules to determine Sponsor Winners and Top Qualified Winners for each Contest Game;
• Implemented a Web Admin App with Next.js that deals with CRUD operations and strategic reports as CSV files.

A startup focused on AI Software; the main product uses AI for inbound and outbound calls using either Twilio or Vonage as call providers. It's tailored to several types of companies, such as customer service, insurance, law, and solar. It allows the creation of AI Agents that can do all the selling process through phone calls with clients

• Implemented stable features like several CRUD’s, Magic Bell Integration (Notifications), Clerk Integration (Auth), and API’s;
• Made some screens faster to users by implementing caching strategies and less unnecessary requests to the server;
• Implemented strategies on default and org-based Feature Flags with LaunchDarkly;
• Implemented Integrations with several CRM’s like HubSpot, SalesForce and High Level with Cobalt;
• Implemented caching strategies to retrieve data faster, reducing their most populated table load from 10 seconds to 1 second;
• Implemented environment variables integration with Doppler;
• Improved performance and stability of AirChat’s Workflow Editor by moving it outside of Remix flow, since it contains a lot of user interaction.

It's an internal project that controls Brazilian Elections data, which is processed with Node.js to feed a dashboard-like React app that is shown on a touch-screen TV to be broadcast live.

• Migrated the project to a Node.js/React environment and refactored the code;
• Designed the front-end and back-end architecture;
• Built a JSON REST API to be used as an endpoint to read data;
• Created Node.js scripts;
• Wrote unit tests for the business-logic functions.