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Eugenio Rosario

@eugeniorosario

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Senior Frontend Engineer at Nestig building React and Node.js order-management tools.

Brazil

Message

At Nestig, I architect and maintain internal order-management tools using React, Redux, Node.js, and Shopify. I optimize performance and user experience while integrating frontend and backend components.

At Valtech, I led frontend development for clients including Sanofi, CBMM, and Niobium Tech, using Vue.js, Nuxt.js, and SASS. Before that, I developed the OTO mobile application at Pmweb and delivered e-commerce solutions at CoreBiz.

Experience

Work history, roles, and key accomplishments

Current

Senior Frontend Engineer

Current

Nestig

Jan 2024 - Present (2 years 9 months)

Architect and maintain high-complexity internal tools for order management using React, Redux, Node.js, and Shopify. Optimize system performance and user experience, ensuring seamless integration between front-end and back-end components.

React Redux NodeJS Shopify Performance Optimization International Collaboration

Senior Frontend Developer (Lead)

Valtech

Jun 2022 - Dec 2023 (1 year 6 months)

Led frontend development for global clients such as Sanofi, CBMM, and Niobium Tech, managing medium-to-high complexity projects. Engineered scalable interfaces using Vue.js, Nuxt.js, and SASS, improving delivery efficiency and code quality.

Vue.Js Nuxt.Js SASS Frontend Leadership Project Management Cross Functional Collaboration

Mobile Developer

Pmweb

Oct 2021 - Jun 2022 (8 months)

Developed and enhanced the OTO mobile application using React Native for iOS and Android. Implemented new features and resolved complex bugs within an Agile/Scrum framework to improve app usability.

React Native iOS Android Agile Scrum Mobile Development

Frontend Developer

CoreBiz

Oct 2019 - Oct 2021 (2 years)

Delivered e-commerce solutions for major brands like KitchenAid Brazil, Motorola Brazil and CompraCerta. Specialized in VtexIO, React.js, and GraphQL to optimize checkout flows and platform responsiveness.

VTEX React GraphQL Ecommerce Checkout Optimization