Leonardo Fonseca

Solutions Architect
Front-end developer & UI designer

Professional profile

I lead the technical side of client delivery — scoping solutions and bridging product needs with engineering — backed by 15 years building interfaces across Latin America.

Experience

Solutions ArchitectAug 2024 — Present
RebelMouse · Remote

Lead the technical side of service delivery: planning solutions, scoping and costing work, and bridging client requests with engineering.

Platform EngineerNov 2023 — Aug 2024
RebelMouse · Remote

Shipped custom platform features for publishers — donation workflows for Lakeville Journal & Millerton News, and translation-workflow improvements.

Head of Design / Tech Advisor / Front-end2012 — 2023
CrearMedia · Lima

Led the design vision for e-learning across Latin America and a remote team of designers; drove the Flash→HTML5 & responsive transition; built onboarding & certification UIs used by thousands.

Creative / Graphic Designer2008 — 2012
CrearMedia · Bogotá

UI and interaction design for e-learning projects — where the craft started.

Education

Platzi2014 — 2023
platzi.com/p/cavera_de
Corporación Nuestra Señora de las Mercedes2002 — 2006
Professional Graphic Artist and Advertisement Technician

Skills & tools

  • Solutions architecture
  • React
  • Next.js
  • GSAP
  • TypeScript
  • SASS
  • HTML / CSS
  • Figma
  • UI & interaction design
  • Typographic design
  • Articulate Storyline
  • Notion CMS

Certifications

  • LXD LATAM Summit 2023

Languages

  • Spanish (native)
  • English (C1)