Gustavo Mantuan

Worked on large-scale e-commerce platforms serving millions of users, focusing on frontend

performance, scalability, reliability, and customer experience across high-traffic product discovery and

checkout flows.

Built and optimized React and Next.js user interfaces for large-scale e-commerce experiences

Improved frontend performance by reducing unnecessary re-renders and optimizing component

architecture

Worked with Server-Side Rendering (SSR) and GraphQL integrations to improve page load times

and data-fetching performance

Collaborated with backend teams using Node.js and Express to improve API integration and

debugging workflows

Implemented automated testing strategies using Jest and React Testing Library

Investigated and resolved complex production issues across frontend and backend systems

Participated in code reviews, CI/CD pipelines, release processes, and performance monitoring

initiatives

Refactored and migrated legacy Handlebars and JSP pages into modern React component

architecture

Collaborated closely with backend engineers to ensure seamless frontend/backend integrations

and scalable data flows

Maintained clean, reusable, and efficient frontend code following modern engineering best

practices

Leveraged AI-assisted development workflows and automation tools to accelerate migrations,

improve developer productivity, and streamline implementation tasks

Contributed to micro-frontend architecture and shared component systems across multiple

commerce applications

AI & Automation Projects•

Built AI-assisted operational automation tools using n8n, OpenAI Whisper, Slack, WhatsApp

Business API, and Telegram Bot API to streamline workflows for a retail franchise business