Gabriel de Souza

Software Engineer

gabriel.nbds@gmail.com GitHub Linkedin Download my CV

I’m a software engineer specializing in JavaScript, TypeScript, ReactJS, NextJS, React Native, and NodeJS, with experience in large-scale applications. I have a strong track record of significant optimizations, like reducing process times by 90% and memory usage by 80%. I work across both frontend and backend, lead teams, and deliver high-quality projects under pressure. I’m committed to building robust and scalable solutions while maintaining high code standards, and I’m open to new challenges in innovative, performance-driven environments. In recent years, I’ve worked professionally with ReactJS, NextJS, React Native, NodeJS, TypeScript, and Flutter.

Work

IM Digital

Jun 22 - Present · Miami, USA

- Reduced a process time from 7 minutes to 30 seconds (+90% improvement), also reducing the RAM usage from 2GB to 300MB (+80% improvement)
- Reduced the time complexity of a function from O(n^2) to O(n), reducing the time taken from the function from about 15 seconds to less than 1 second
- Used local first to reduce the time taken to have the latest data available to the user from 10 minutes to instant (+99% improvement), improving the user experience

Tech Stack: ReactJS, NextJS, NodeJS, GraphQL, Flutter, TypeScript

IBM

Jan 22 - Jun 22 · São Paulo, Brazil

- Migrated components from JavaScript to TypeScript and from class components to functional components, improving code maintainability and reducing LOC by +30%
- Fixed a memory leak that caused the app to crash after long use, improving app stability
- Increased team efficiency by resolving a complex challenge that no one was able to address, demonstrating problem-solving excellence

Tech Stack: React Native, TypeScript

wBrain

Dez 2020 - Dez 2021 · Rio de Janeiro, Brazil

- Reduced API response time from 4 seconds to under 300ms (+90% improvement), improving perceived performance
- Reduced build time from 12 minutes to 2 minutes (+80% improvement) by optimizing CI/CD pipeline
- Transformed a manual process using Excel into a digital system, eliminating human error, giving more visibility and reducing time spent on the task from 2 weeks to 1 week (50% improvement)