Juan Sebastian Zapata Ocampo
@sebasz1000
UI Developer & Design System Engineer | 8+ years specializing in Component Architecture, React & Clean CSS
ColombiaWhat I'm looking for
I am a Senior UI Developer and Design System Engineer with over 8 years of experience bridging the gap between pixel-perfect design and production-ready code. I specialize in building robust component libraries, scalable design systems, and highly responsive web interfaces.
Throughout my career—including my work at RebelMouse and leading universities like Icesi and Autónoma de Occidente—I have mastered the art of translating complex Figma/UX wireprints into clean, modular, and semantic frontend code. My deep technical foundation allows me to handle advanced UI logic effortlessly while ensuring web accessibility and pristine layout structure.
My Core Stack & Expertise:
* UI / Frontend: HTML5, CSS3/Sass/Tailwind, JavaScript (ES6+), React, TypeScript, Figma
* Systems & CMS: Design Systems, Component-Driven Development, WordPress, Headless Architectures.
* Technical Core: Advanced Browser DOM, Webmastering, UI and Code Debugging, Semantic HTML, Core Web Vitals, and SEO.
I thrive in remote, collaborative, and async-friendly environments where code quality and thoughtful design are valued over chaotic ticket production. I bring the technical depth of an experienced engineer and the precision of a digital craftsman.
Experience
Work history, roles, and key accomplishments
Worked on a large-scale content platform serving millions of pageviews, focusing on performance, SEO, and Core Web Vitals optimization across complex, CMS-driven front ends.
Led performance-critical initiatives including LCP optimization, render-blocking reduction, lazy loading strategies, and scripting cost control.
Architected and maintained clean, component-driven UI structures for a major
UI Developer - Platform Frontend
RebelMouse
Dec 2023 - Jul 2025 (1 year 7 months)
Worked on a large-scale CMS-driven content platform focused on performance, SEO, and Core Web Vitals optimization. Led frontend performance-critical initiatives (e.g., LCP and render-blocking reduction) and maintained component-driven UI structures with accessibility and semantic HTML standards.
Created a comprehensive frontend curriculum from scratch, teaching college students best practices in semantic HTML, CSS architecture, and responsive web design.
Instructed advanced React concepts, focusing on component-driven development, modular UI patterns, and clean state management.
Guided students through building interactive web applications, emphasizing browser behavior, clean code conve
Adjunct Professor - Web UI
Universidad ICESI
Jul 2023 - Jun 2024 (11 months)
Created and taught a frontend curriculum focused on semantic HTML, CSS architecture, and responsive web design. Instructed advanced React component-driven development concepts and guided students building interactive applications with clean code conventions and modern web standards.
Led the complete visual and structural redesign of the institutional portal, translating complex Figma mockups into a clean, custom, and highly responsive web experience.
Engineered a modular UI architecture that improved layout scalability by 50%, ensuring pixel-perfect design consistency across all pages and devices.
Built a user-friendly and component-based CMS workflow, enabling non-technica
UI Developer & Digital Design Professor
Oct 2013 - Dec 2017 (4 years 2 months)
Engineered interactive web interfaces and digital pedagogical tools, utilizing CSS3 animations, fluid layouts, and responsive design frameworks to maximize user engagement.
Developed and customized user-centric web repositories, focusing on intuitive navigation, accessible UI components, and seamless interface execution.
Instructed courses on Design Fundamentals, mentoring students on visual hie
UI Developer & Digital Design Prof
Universidad Autónoma de Occidente
Oct 2013 - Dec 2017 (4 years 2 months)
Engineered interactive web interfaces and digital pedagogical tools using CSS animations and responsive design frameworks. Developed accessible, user-centric web repositories and taught courses bridging design fundamentals with web development, including UI interactions and animation-focused frontend structures.
Monitoría académica de cursos Fundamentos de programación y Diseñando con Algoritmos: Oportunidad dada por ICESI a los estudiantes destacados en dichas materias. Acompañamiento a los estudiantes durante el curso en un espacio especifico, donde resolvía sus dudas y dificultades con respecto al curso.
Asistencia técnica a los profesores en las salas de computo de la Universidad ICESI. Preparación técnica de las salas de computo antes de las clases ( computador maestro, videoBeam, cableado y funcionamiento).
Mantenimiento de los equipos de la institución.
Education
Degrees, certifications, and relevant coursework
Universidad Icesi
Diseñador de medios interactivos, Programación
2007 - 2012
Colegio León de Greiff
Bachillerato Técnico en Sistemas, Programación informática
2001 - 2007
Tech stack
Software and tools used professionally
Availability
Location
ColombiaAuthorized to work in
Website
github.com/sebasz1000Salary expectations
Social media
Job categories
Skills
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