Available to hire
I am Jefferson Adriano, a UX/UI designer with over seven years of experience leading end-to-end product design for global platforms. I thrive on aligning research, design systems, and cross-functional collaboration to craft intuitive, scalable interfaces that boost engagement and security.
My strength lies in building cohesive UI component libraries, onboarding flows for new users, and optimizing usability across devices. I bring a friendly, user-centered mindset and a passion for visual language, accessibility, and data-driven design that supports business goals.
Language
English
Fluent
Japanese
Intermediate
Work Experience
UX/UI Designer at Rakuten Group Inc.
June 30, 2025 - June 30, 2025Designed the Security Defender Platform to centralize all platforms for Rakuten users, increasing engagement and system security by 15% by Q1 2025. Designed user experience for the MT4 Forex trading platform, optimizing usability across devices. Managed the overall design system for consistency and scalability.
UX/UI Designer at NKOK Inc.
May 31, 2018 - May 31, 2018Worked cross-functionally with product managers and engineers to align UX design proposals with business objectives and enhance user engagement.
UI Designer at Barclays Capital
November 30, 2014 - November 30, 2014Cared for the design enhancements and user experiences across various financial platforms, focusing on user engagement and satisfaction.
Web Designer & Video Editor at United Laboratory Inc.
April 30, 2011 - April 30, 2011Created web designs and edited videos to enhance brand visibility, ensuring quality and brand consistency.
Graphic Designer at Graphicad Creation
August 31, 2005 - August 31, 2005Designed various marketing materials, focusing on engaging visuals and quality output on industrial printing equipment.
UX / UI Designer at Rakuten Group Inc.
August 1, 2018 - June 1, 2025Led UX/UI design across platforms for Rakuten users, centralizing workflows and creating end-to-end experiences. Built and maintained a scalable design system and UI component library, aligning with product managers and engineers. Focused on intuitive onboarding for new users, onboarding flows, and cross-platform usability, contributing to improved engagement and security. Current work includes enhancing the MT4 trading platform and ensuring responsive usability across all devices.
Web Designer at NKOK Inc.
August 1, 2014 - May 1, 2018Designed web interfaces and UI components in collaboration with product and development teams, delivering responsive layouts and visually cohesive experiences.
UI Designer at Barclays Capital Bedok
August 1, 2011 - November 1, 2014Created user-centered UI designs for financial products, working with cross-functional teams to translate requirements into intuitive interfaces.
Web Designer & Video Editor at United Laboratory Inc.
August 1, 2005 - April 1, 2011Developed web assets and edited promotional videos, supporting marketing and product initiatives with clear visual communication.
Education
Qualifications
CSDD Defenders Award 2024
January 1, 2024 - November 17, 2025Industry Experience
Software & Internet, Education, Financial Services, Retail, Media & Entertainment
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