Miguel Angel Giraldo

Miguel Angel Giraldo Duque

Born in Colombia and based in Buenos Aires, Argentina, I’m a Full Stack Developer with +4 years of experience and +2 years as a UX/UI designer. I combine engineering and design to build end-to-end products—from interface and business logic to integration and deployment—across sustainable fashion e-commerce as well as quantum computing and knowledge mining at Qnow.

Projects

What I Learn and
Apply to the World

ReactTypeScriptNext.jsNode.jsUX/UICypressVitestCSS
  1. 01Private

    UDA Full-Stack Developer

    ReactTypeScriptNext.jsCypressVitestCSSNode.js

    As Frontend Lead, I spearheaded development while contributing to backend architecture. At QNOW, I helped launch 'UDA'—the company's first profitable project—an automated payment-review system processing 10,000+ transactions, slashing client operational costs by 80% through streamlined workflows.

  2. 02

    Qnow Space

    Next.jsTypeScriptReactUX/UI

    Built and shipped QnowTech’s corporate site on Next.js App Router + Sanity CMS—live content editing, knowledge-graph visualization for fintech trust cases, and GTM analytics. Public face of Qnow’s product work alongside private UDA delivery.

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  3. 03

    BTZ Sport (Contractor Full Stack Developer)

    GraphQLNext.jsReactShopify

    Headless e-commerce storefront for sustainable fashion brand BTZ—Next.js + Shopify GraphQL with size-aware cart, WhatsApp-assisted checkout, sustainability impact metrics, and Spanish/Colombia localization (es-CO, COP) on Vercel.

    (opens in a new tab)
  4. 04

    Closet dinamico (Contractor Full Stack Developer)

    ReactNode.jsNext.js

    Digital garment passport for circular fashion in Latin America—Next.js + TypeScript flows that surface material composition, ownership history, and impact KPIs, plus circular actions (repair, exchange, recycle) for registered garments.

    (opens in a new tab)
  5. 05

    AI Concept Visuals (Contractor Frontend Developer)

    ReactHTMLUX/UIThree.js

    Created a key visual for Alejandro Giraldo Londoño’s talk, demonstrating AI’s seamless transformation into actionable knowledge. The design framed this cognitive shift as an interactive journey—making abstract ideas tangible and emphasizing human-centric exploration.

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  6. 06

    Andrés Giraldo Portfolio (Contractor Frontend Developer)

    ReactUX/UIHTML

    Built responsive landing page components with UX-focused design, leveraging HTML/CSS to strengthen brand identity. Enhanced Andrés’ client conversion rates by 30% through fluid animations and intuitive interfaces.

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Nice things people say
about my work

Juan David Verano, 1 of 4

testimonial

Como diseñador UX tuve una gran experiencia de trabajo con Migue, no sólo por su conocimiento técnico y capacidad para plasmar en código las ideas, sino por su buena disposición de trabajo en equipo, al escuchar y proponer soluciones para sacar adelante cada proyecto.

Juan David Verano // Qnow

testimonial

Trabajar con Migue ha sido una experiencia muy positiva. Es responsable, comprometido y tiene una gran capacidad para afrontar desafíos. Se destaca por combinar un sólido perfil técnico con una mirada creativa que aporta valor y nuevas perspectivas a cada proyecto.

Luis Daniel Ruiz // Qnow

testimonial

Trabajar con Miguel es sinónimo de versatilidad y visión de producto de punta a punta. Su capacidad única para fusionar el desarrollo Full Stack, el diseño UX y la programación de agentes inteligentes permite transformar conceptos tecnológicos complejos en experiencias digitales intuitivas, atractivas y de alto impacto.

Mariano Caruso

testimonial

Miguel es una persona proactiva, que hace propuestas coherentes e investiga para buscar apoyarse para tener fundamentos del desarrollo de los proyectos.

Zora // BTZ

Contact

Want to talk about a project?

I build landing pages for local businesses: fast, clearly priced, and ready to be found by people and by AI search (GEO/AEO).