About
Hi, I'm Constanza.
I'm a frontend developer with a background in Industrial Design. That mix is the whole point: I don't just build interfaces, I start from the user's problem and care about whether someone can understand and trust what they're looking at.
For four years I worked on Printful's Design Maker — the complex visual editor at the core of the product, used by hundreds of thousands of merchants. Taking something powerful but intimidating and making it manageable is exactly the kind of work I enjoy. Today I do that end-to-end: as a freelancer building websites and custom data tools for businesses, and on my own product, HandyFEM.
I work AI-native (Claude Code, Cursor), I obsess over accessibility and performance, and I'd rather ship something small and impeccable than big and rough.
Experience
- 2025 — Present
HandyFEM · Founder & Full-Stack Developer
My own marketplace PWA, selected for the TecnoCampus (UPC) incubation program.
- 2024 — Present
Freelance · Frontend Developer & Designer
End-to-end websites and custom tools for businesses (Borrissol, metalRef).
- 2021 — 2025
Printful · Frontend Developer
Design Maker team — the core visual editor of a 200K-merchant print-on-demand platform.
- 2019 — 2021
Admira Digital Networks · Frontend / Web Developer
Rewrote the core product from a legacy stack to Vue.js — my first large-scale Vue project.
Skills
- Frontend
- Vue · React · Next.js · Astro · TypeScript · JavaScript · Tailwind · Fabric.js · a11y · i18n · Core Web Vitals
- Backend & Data
- Node · Express · Supabase · PostgreSQL · MySQL · MongoDB · REST APIs
- Design & Tooling
- Design systems · Figma · Git · Docker · Playwright · Industrial Design foundation
- AI-native
- Claude Code · Cursor · v0 — integrated into my workflow since 2024