Juan Vivanco

Available for new projects

Frontend Engineer — I build products people love to use.

10+ years shipping interfaces at companies like Sephora, Alation, and UMass Global. Based between Portugal and Ecuador — working with global teams. I combine deep frontend expertise with AI-augmented workflows to move fast and ship quality.

ReactTypeScriptNext.jsReact NativeNode.jsTailwind CSSAI-Augmented Dev

View my work Download CV

Selected Work

Desk AI

Senior Frontend Developer

AI platform automating real estate contracts for 50,000+ transactions. Built conversational AI interfaces with streaming responses and document analysis tools.

UMass Global

Principal Frontend Engineer

Led a full site refactor and modularized complex tools like the Time Cost Calculator and Program Finder for the university.

Sephora

Senior Frontend Developer

Built the Live Beauty Chat from scratch — a progressive web app for real-time customer conversations with Beauty Advisors.

Alation

Senior Frontend Developer

Co-created Fabric, Alation's design system — guidelines and reusable components powering their data catalog platform.

Side Projects

Toners

React Native · Expo

Full e-commerce mobile app for iOS & Android, built solo.

Oversee

Next.js · MUI · Stripe

B2B wholesale commerce platform with campaign engine.

XCVM

React · Web3

Cross-chain virtual machine interface for Composable Finance.

/nowWhat I'm up to

Building AI-powered real estate tools at Desk AI
Exploring AI-augmented dev workflows with Claude Code and Cursor
Mentoring frontend developers through Proxify and Andela
Living between Portugal and Ecuador — optimizing for sunshine and focus time