Senior Frontend Engineer & Creative Technologist · 13 years bridging design and engineering
Building interactive, motion-driven interfaces and the design systems that scale them — from real-time 3D product configurators to component libraries used across multi-team ad platforms.
🟢 Currently open to remote Senior React/Next.js roles
React · Next.js (App Router) · TypeScript · Three.js · GSAP · Design Systems · NestJS · PostgreSQL · AWS
- castilloquesada.com — my portfolio, built in the open. Next.js + GSAP + Lenis, token-driven design system, hand-built end to end.
- Global Footwear Brand — 3D Shoe Customizer — real-time product customization for a global brand (Vue + Three.js)
- Multi-Team Retail Ad Platform — Design System — SCSS token/component library powering a multi-team ad platform
- Uniwatch — AI-powered IP vigilance SaaS, built and led as sole technical lead (NestJS, PostgreSQL, Python/TensorFlow, AWS)
(The footwear and retail-media platform projects were delivered via Publicis Global Delivery; details shared here stay at the narrative level per client NDA.)
Frontend architecture that holds up under real production weight — performance-conscious motion, systems that other engineers can build on without guessing, and a genuine interest in the point where design and engineering overlap rather than just meet.

