juan churin

Build and maintain data-intensive workflows replacing spreadsheet-based processes with a centralized web application. Develop frontend features using React, TypeScript, Vite, Tailwind CSS, TanStack Query, Router, and Table, and work across the full stack with Python, FastAPI, and PostgreSQL.

Built product features from scratch for an AI platform for building agents, connecting tools and data sources, and creating automated workflows. Developed with React, TypeScript, Vite, TanStack Query, TanStack Router, and Tailwind CSS across a large production codebase.

Developed product features using React, TypeScript, Tailwind CSS, React Router, Redux, and React Context within a microfrontend architecture. Worked across frontend and Node.js/Express Backend-for-Frontend layer, integrating UI with backend services and APIs.

Owned frontend development of a fantasy sports product, building both web and mobile applications from scratch. Built web app with Next.js, React, and TypeScript and mobile app with React Native, TypeScript, Expo, and MobX, and integrated with a GraphQL backend.

Led frontend delivery across 3+ concurrent projects, coordinating approximately 7–9 engineers and acting as primary technical lead between Leniolabs and Ellie Mae. Made architecture decisions across React, TypeScript, Redux, Redux-Saga, React Router, Styled Components, design systems, and microfrontend applications.

Developed and maintained large production applications using React, TypeScript, Redux, Redux-Saga, React Router, and Styled Components within a microfrontend environment. Built reusable UI components with a shared React design system and participated in code reviews, debugging, testing, and feature delivery.

Worked across client projects in education, financial services, travel, and other industries, contributing to both frontend and backend development. Started with PHP, Zend Framework 2, jQuery, and JavaScript; later worked with Java and Angular on financial-technology projects for Red Link.