Igor
Morais

Developed a library of UI components used across all applications, ensuring consistency, performance, and accessibility.

Contributed to a real estate platform that covers every stage of building rentals (listings, leasing, management, and payments), building 4 web applications, ~14 microservices, third-party integrations, and data analytics.

Developed a tool that automates code maintenance (remove dead code, enforce standards, and more) for Node applications. Supports JavaScript and TypeScript, applying deterministic transformations through the Abstract Syntax Tree (AST).

Contributed to several domain-scoped microservices communicating over gRPC to support a gamification feature.

Contributed to a GraphQL gateway service handling routing, caching, authentication, rate limiting, protocol translation, request/response aggregation and transformation, and usage analytics.

Developed a mobile application for proximity data transfer over high-frequency audio beyond human hearing, enabling any device with a speaker or microphone to communicate.

Contributed to a service that ingests and processes data from IoT devices, handling ~4 million requests daily and displaying results in real time on a dashboard.

Contributed to an iOS application, implementing gesture handling (tap, pan, pinch, rotate) applied to canvas objects in real time, with a responsive layout supporting multiple screen sizes.

Developed a web application for customers to sign up for TV plans and manage their accounts (plans, payment methods, and account details). Reached $4 million in monthly sales within months of launch.

Contributed to a payment service with simple integration and support for multiple payment methods (Pix, Boleto, debit card, and credit card), plus a widget compatible with modern web frameworks (Vue, React, and Svelte). Used by leading telecom companies (Oi, TIM, Vivo, and Claro) in Brazil to process payments.

Developed a service that streams real-time locations over WebSocket and broadcasts them to channel subscribers using a pub/sub model, a core component of a transportation platform, plus a dashboard for monitoring and managing vehicles.

Refactored a large Android application from Java to Kotlin to modernize the architecture, adding caching, async operations, resource optimization, background processing, and modularization.

Contributed to a mobile game with over 2 million downloads across iOS and Android, built in collaboration with the University of Cambridge to teach English through an entertaining, gamified approach.

Reviewed student project submissions and delivered actionable feedback that improved project quality and helped students boost grades.

Developed a mobile application for the early detection of epidemics through collaborative health reports. Recognized as the best mobile government service in the health category at the World Government Summit 2017 in Dubai.

Rewrote a mobile application for bike-rental used across multiple cities, delivering native iOS and Android applications in 5 months.

Developed a mobile application for the early detection of epidemics through collaborative health reports. Recognized as the best mobile government service in the health category at the World Government Summit 2017 in Dubai.

Contributed to a mobile application that automates phone settings (toggle Wi-Fi, launch applications, and more) using NFC tags. It was the very first NFC application on Google Play, shipped with the Samsung Galaxy S III in 2012.

Contributed to an Android library of 3D UI components (including a page, list, and gallery), used in multiple Samsung applications.

Contributed to a mobile application for indoor navigation, using edge detection and Hough transform algorithms to map spaces, a path search algorithm to compute routes, and Wi-Fi signals for precise positioning.

Contributed to the official iOS application for the Rio 2016 Olympic Games, implementing the event schedules feature that let users track competition times.

Developed scripts that reduced ticket resolution time by 80%.

Udemy

Udemy

Udemy

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