Nahuel Zamuner

Developed and maintained a React.js component library based on atomic design principles, which improved reusability across four verticals within the checkout process. Implemented unit and end-to-end tests achieving over 90% coverage and reducing production bugs. Integrated backend services using Node.js/Express optimizing performance and error handling. Optimized regression testing cycles, reducing test time by half and lowering the required number of platform developers. Worked with monitoring and tracing tools such as Datadog, Kibana, and New Relic.

Desarrollo y mantenimiento de una librería de componentes en React.js basada en Atomic Design, implementación de pruebas unitarias y end-to-end (Jest/Playwright), integración con backend Node.js/Express y observabilidad con DataDog, Kibana y New Relic. Mejora de la estabilidad y rendimiento del checkout mediante arquitectura escalable y manejo de errores, y reducción del tiempo de pruebas y necesidad de recursos de desarrollo mediante monitoreo y trazabilidad.

Developed belo.app focusing on multipage performance, accessibility, and SEO positioning. Implemented routing with Wouter and optimized rendering with Bun, achieving initial load times under 1.5 seconds. Designed and coded reusable React.js components following BEM conventions and atomic design principles. Configured i18n and persistent language switching system improving the user experience in global contexts.