I am a Senior UI/UX Designer and Design System Manager with over 10 years of experience building scalable digital products for fintech, banking, e-commerce, and enterprise ecosystems. I specialize in creating Design Systems from scratch, multi-brand libraries, token architecture, governance, technical documentation, and ensuring alignment between design and development. I lead teams, improve design operations, and elevate accessibility and consistency across high-traffic products. I am fluent in Spanish and professional English (B2), and I am passionate about crafting clean, accessible, future-ready digital experiences.

Jefferson González Castillo

I am a Senior UI/UX Designer and Design System Manager with over 10 years of experience building scalable digital products for fintech, banking, e-commerce, and enterprise ecosystems. I specialize in creating Design Systems from scratch, multi-brand libraries, token architecture, governance, technical documentation, and ensuring alignment between design and development. I lead teams, improve design operations, and elevate accessibility and consistency across high-traffic products. I am fluent in Spanish and professional English (B2), and I am passionate about crafting clean, accessible, future-ready digital experiences.

Available to hire

I am a Senior UI/UX Designer and Design System Manager with over 10 years of experience building scalable digital products for fintech, banking, e-commerce, and enterprise ecosystems.

I specialize in creating Design Systems from scratch, multi-brand libraries, token architecture, governance, technical documentation, and ensuring alignment between design and development. I lead teams, improve design operations, and elevate accessibility and consistency across high-traffic products. I am fluent in Spanish and professional English (B2), and I am passionate about crafting clean, accessible, future-ready digital experiences.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Spanish; Castilian
Fluent
English
Advanced

Work Experience

Senior UI Designer / Design System Manager at DirecTV Latam - VRio
July 1, 2023 - October 12, 2025
Led the development and maintenance of comprehensive design systems for DirecTV and VRio. Led a talented design team on high-impact projects, resulting in a 30% increase in user engagement. Streamlined design workflows, reducing project turnaround times by 20%.
Senior UI / UX Designer at McKinsey & Company
August 1, 2021 - October 12, 2025
Spearheaded the development of the design system for the e-commerce redesign.
Senior UI Designer at Banco Pichincha
July 1, 2021 - October 12, 2025
Crafted diverse user-centric flows for various devices, including native apps, ensuring optimal usability and seamless experiences. Participated in user interview processes to inform product decisions.
Middle UI Designer at Talos Digital
June 1, 2019 - October 12, 2025
Created visually compelling and user-friendly interfaces for a diverse international client base. Collaborated closely with cross-functional teams to ensure design consistency and effectiveness.
Middle UI Designer at Zemoga / Media Monks
June 1, 2018 - October 12, 2025
Delivered high-quality UI designs for redesigns of Walmart and Jet.com, contributing to successful launches. Participated in continuous improvement initiatives to refine design processes and outcomes.
Junior UI Designer at Rappi
November 1, 2017 - October 12, 2025
Designed user interfaces for mobile applications, focusing on user engagement and retention. Collaborated with multidisciplinary teams to optimize user experience.
Creative Web Designer at DBL LATINA
May 1, 2016 - October 12, 2025
Created impactful web campaigns and digital materials for high-profile clients. Enhanced online presence and brand identity through creative and strategic web design.
UI Designer (Design System) at Banco Guayaquil – Cleo Design System
March 1, 2025 - November 30, 2025
Complete redesign of the Cleo Design System to make it scalable, modular, and multi-platform ready. Creation of technical documentation, best practices, visual and accessibility guidelines. Development of a multi-platform Design System (Web, iOS, Android, Email) for Personal and Business Banking segments. Definition of foundations and tokens, from primitives to semantic tokens. Strong focus on accessibility, ensuring WCAG compliance.
Senior UI/UX Designer / Design System Manager at DIRECTV LATAM – Vrio
September 1, 2021 - July 31, 2023
End-to-end creation of the DGO / DIRECTV GO Design System. Regional UI/UX team leadership, increasing engagement by 30 percent. Reduction of design-to-development time by 20 percent through reusable components. Multi-brand adaptation for SKY Brasil. UX research integration to improve usability and accessibility.
Senior UI Designer at McKinsey & Company
July 1, 2021 - August 31, 2021
Design System development for a large-scale e-commerce redesign. Scalable multi-device user flows. UX research and insights contribution.
Senior UI Designer at Banco Pichincha
July 1, 2019 - July 31, 2021
Digital banking interface design, increasing user satisfaction by 25 percent. Contribution to the corporate Design System. User-centered design processes with accessibility focus.
Middle UI/UX Designer at Talos Digital
January 1, 2019 - June 30, 2019
UI design for international clients. Visual consistency assurance across products.
UI Designer at Zemoga / Media Monks
January 1, 2018 - June 30, 2018
UI design for Walmart and Jet.com. Continuous improvement of visual quality and workflows.
Creative Web Designer at DDB LATINA
April 1, 2015 - May 31, 2016
Digital campaigns and assets for high-profile brands.

Education

Foundations of UX Design at Google / Coursera
January 1, 2022 - January 1, 2022
Master in User Experience Design (UX, UI) at Shift a / Elisava
January 1, 2021 - January 1, 2022
Immersion in UX and Digital Product Design at Multiplica Academy
July 1, 2018 - October 1, 2018
Graphic Designer at Universidad Jorge Tadeo Lozano
January 1, 2008 - January 1, 2014
Audiovisual Media at Universidad Jorge Tadeo Lozano
January 1, 2008 - January 1, 2014
Foundations of User Experience (UX) Design at Google / Coursera
January 1, 2022 - December 31, 2022
Master’s Degree in User Experience Design (UX/UI) at Shifta / Elisava
January 1, 2021 - December 31, 2022
UX and Digital Product Design Immersion at Multiplica Academy
July 1, 2018 - October 31, 2018
Graphic Design / Audiovisual Media at Jorge Tadeo Lozano University
January 1, 2008 - December 31, 2014

Qualifications

Silver-Pilsen Retro (Colombia) Award
January 1, 2016 - January 1, 2016
AngelHack Bogotá – Hackathon Winner
January 1, 2013 - January 1, 2013

Industry Experience

Media & Entertainment, Software & Internet, Professional Services, Financial Services, Retail