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Gabriel GuimarãesGG
Open to opportunities

Gabriel Guimarães

@gabrielguimares1

I’m a fullstack developer focused on scalable React/Node systems and performance.

Brazil
Message

What I'm looking for

I want to build secure, maintainable, upgradeable web products for global digital experiences—maximizing business benefit while keeping continuous delivery excellence. I thrive where I can standardize components, improve performance, and integrate systems end to end.

I’m a fullstack developer with 4+ years of experience building scalable, high-performance web applications. I focus on component standardization, system integration, and performance optimization using React, Next.js, Node.js, and NestJS. I also enjoy translating business requirements into technical design with clear, secure implementation.

At IplanRio, I designed and developed new RESTful APIs with Node.js and NestJS that increased performance and stability for the city’s payment processing systems. I improved internal dashboard components in React to deliver better responsiveness, scalability, and a stronger user experience for operational teams. I contributed to backend development and cross-team collaboration for the tariff clearing system (CCT), and I was promoted based on consistent technical quality and strong ownership of complex work.

Previously, as a front-end developer for IplanRio and Rio de Janeiro City Hall, I delivered responsive interfaces with React, Redux, and TypeScript, including reusable components and real-time monitoring features using GPS and GTFS. I’m seeking to apply my engineering background to global digital experiences—maximizing business benefit while ensuring continuous delivery excellence.

Experience

Work history, roles, and key accomplishments

IP
Current

Mid-Level Fullstack Developer

IplanRio

Apr 2025 - Present (1 year 2 months)

Designed and developed RESTful APIs with Node.js and NestJS, improving performance and stability for the city’s payment processing systems. Improved React dashboard component architecture and supported delivery of the tariff clearing system (CCT), earning a promotion for technical quality and cross-team ownership.

IP

Front-end Developer

IplanRio

Apr 2023 - Apr 2025 (2 years)

Developed responsive, high-fidelity React interfaces using Redux and TypeScript for the city’s CCT system, delivering features that improved usability and operational workflows. Contributed to GPS/GTFS real-time monitoring for large-scale data streams and collaborated cross-functionally to align business requirements with implementation.

RH

Front-end Developer

Rio de Janeiro City Hall

Sep 2022 - Apr 2023 (7 months)

Implemented interactive Leaflet.js map components for real-time visualization of the public transport fleet, integrating and processing GTFS (General Transit Feed Specification) data. Built reusable, accessible React components from Figma layouts for the Mobility portal while working in an Agile/Scrum environment.

Education

Degrees, certifications, and relevant coursework

UF

Universidade Filadélfia

Analysis and Systems Development

Studying Analysis and Systems Development at Universidade Filadélfia in Londrina, with expected completion in the first quarter of 2026.

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