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UX DESIGNER

San Francisco Bay Area

HELLO,

I'M SUNYOUNG.

​

A Life-long Learner

& A Proactive Collaborator 

​

​

ABOUT ME

UX Designer with 15+ years of experience spanning platform strategy and visual design. Led AI-driven, cross-device experiences across the Samsung Galaxy ecosystem, including conversational UX for Bixby and multimodal interactions with Google Gemini. Skilled in end-to-end design across mobile and wearables, building scalable systems, defining interaction standards, and delivering production-ready interfaces with global teams.

EXPERIENCE

MAR 2024  - DEC 2025

Senior UX Designer
Samsung Mobile, South Korea

Multi-AI agent UX, Gemini for One UI

  • Partnered with Google Gemini UX team to design cross-app actions on Samsung Galaxy S25, S26, Watch8 enabling seamless multimodal interactions across apps and services.

  • Defined critical cross-app user journeys and interaction models, improving usability in complex, multi-step scenarios and increasing Gemini cross-app action retention by 3.5%.

  • Translated and scaled Gemini interaction patterns into Samsung’s One UI, establishing consistent, cross-device AI experiences across foldables, wearables, and hearables.

  • Led cross-device UX integration strategy, designing how AI interactions extend across form factors and driving an 8% increase in cross-device Gemini usage.

  • Synthesized user feedback and AI agent insights to design adaptive, context-aware interaction flows, streamlining key touchpoints across the Galaxy ecosystem.

MAR 2021  - FEB 2024

Senior UX Designer
Samsung Mobile, South Korea

Bixby, Voice assistant UX

  • Identified low feature discoverability in Samsung Bixby, with usage heavily concentrated on basic commands (e.g., weather, alarms), limiting adoption of advanced capabilities.

  • Led end-to-end conversational UX redesign across voice and text, transforming rigid command-based interactions into a flexible, intent-driven system.

  • Built a scalable UI framework integrating conversational inputs with capsule outputs, unifying fragmented experiences and enabling consistent cross-feature interactions.

  • Introduced dynamic capability surfacing (contextual prompts, real-time feedback, suggestions), increasing multi-step task completion by 22% and reducing user friction.

  • Expanded feature usage beyond core commands by 20%, driving more diverse and frequent interactions across devices, including Fold and Tablet.

MAR 2019  - FEB 2021

Senior UX Designer
Samsung Mobile, South Korea

One UI Personalization 

  • Defined core UX principles and interaction models for Samsung One UI, establishing a foundation for personalized experiences across Galaxy products.

  • Built and scaled shared design systems for One UI 3 and 4, including patterns, components, and layouts, improving consistency and cross-team efficiency.

  • Authored system-wide UX guidelines and use cases, accelerating alignment between designers and engineers and driving broader adoption of One UI standards.

  • Spearheaded One UI design system implementation and optimization across 30+ core features, reducing design-to-engineering handoff time by 30% and increasing component reuse by 15%.

MAR 2018  - FEB 2019

Senior UX Designer
Samsung Mobile, South Korea

Next-Gen Mobile Experience

  • Directed UX concept planning for Gen Z-focused initiatives, contributing to features adopted in Galaxy S21 launch.

  • Led cross-regional design workshops across UK and US teams, improving alignment and reducing iteration cycles.

  • Produced storyboards, interaction flows, and prototypes grounded in Gen Z behavior insights, influencing product direction.

  • Conceptualized and drove the launch of “Director’s View” on Samsung Galaxy S21, a key camera feature highlighted in global marketing.

MAR 2017  - FEB 2018

Senior UX Designer
Samsung Mobile, South Korea

Always On Display (AOD) UI/UX

  • Identified AOD UX trade-offs between glanceable information and hardware constraints (battery, burn-in), applying a minimal, dark UI approach.

  • Redefined AOD information architecture using user research and usage data, addressing low adoption of customization vs. strong demand for personalization and daily info.

  • Redesigned editing experience into a tab-based, preview-driven flow with improved interactions (bottom-panel editing, double-tap widgets), validated by internal testing (75% preference).

MAR 2015  - FEB 2017

Senior UX Designer
Samsung Mobile, South Korea

Voice & Video Call UI/UX

  • Led UX design for native communication apps (Phone, Messages, Contacts) on Samsung Galaxy S8, shaping core communication experiences across Galaxy devices.

  • Partnered with T-Mobile to align UX with carrier requirements, integrating branded services while maintaining consistent Samsung design experience.

  • Co-developed Smart Call feature with Hiya, improving call screening experience and reducing unwanted call exposure by 25%.

MAR 2009  - FEB 2015

Mid-Senior UX Designer
Samsung Mobile, South Korea

Tizen platform UX 

  • Built multi-screen UI libraries for the Tizen platform from the ground up, establishing scalable UX standards across device form factors.

  • Partnered with a 10-person Intel UK design team to define core UI components and interaction patterns for cross-device applications.

  • Delivered production-ready UI component libraries adopted by global developers, driving consistency across the ecosystem and reducing design fragmentation.

  • Achieved strong developer adoption, with 250K+ UI components downloaded and used by mobile app creators worldwide.

EDUCATION

MAR 2007 - FEB 2009

M.S., KAIST, in Daejeon, South Korea

Industrial Design, Co-design interaction Design Lab

MAR 2000 - FEB 2006

B.S., KAIST, in Daejeon, South Korea

Major in Industrial Design

Minor in Computer Science

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