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Yookyung Lim

@yookyunglim

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Design leader with over 15 years of experience in UX.

United States

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What I'm looking for

Design executive and product strategist with deep expertise in enterprise UX for AI, data platforms, and BI tools. I specialize in scaling design systems, streamlining UX workflows, and leading mixed-method research to inform product roadmaps. I apply Agile, design thinking, and cognitive UX principles using tools like Figma, Power BI, Tableau, and Storybook.

I am a design leader with over 15 years of experience guiding cross-functional teams and transforming complex workflows into intuitive, user-centric interfaces. My expertise lies in aligning design strategies with business objectives and establishing scalable design systems. I have a proven ability to mentor high-performing teams and integrate design seamlessly into agile development cycles, delivering impactful, customer-focused experiences that drive adoption and business growth.

Throughout my career, I have led transformative UX initiatives at major companies like AT&T and DIRECTV, driving cross-functional alignment and architecting intuitive, enterprise-grade SaaS platforms. My leadership in AI and data UX strategy has not only reduced development costs but also significantly increased product adoption and satisfaction. I am passionate about creating designs that not only meet user needs but also contribute to substantial business outcomes.

My commitment to excellence is reflected in my ability to build and govern unified design systems that have been adopted by over 100 product teams, resulting in significant cost savings and accelerated delivery cycles. I thrive in collaborative environments where I can leverage my skills to foster innovation and drive growth.

Experience

Work history, roles, and key accomplishments

Current

Principal UX/Product Designer

Current

AT&T

Jul 2015 - Present (10 years 1 month)

Directed a global team of 50+ designers and engineers, establishing a customer-first design culture and implementing standards that enhanced design consistency by 30% across 5+ enterprise product lines, aligning with strategic design initiatives. Championed the UX strategy for an AI-enabled BI platform, driving 40% adoption and $50M in revenue by designing intuitive visualizations that improved wo

UX Design Product Design Agile Methodologies Design Systems Stakeholder Management User Adoption Revenue Team Leadership

Lead UX/UI Designer, SharePoint Systems

Northrop Grumman Corporation

Oct 2014 - Jun 2015 (8 months)

Redesigned UX and front-end for 10+ SharePoint-based enterprise systems, implementing modular design components that reduced UI inconsistencies by 40% and supported the organization’s digital transformation. Enhanced tool efficiency by 25% through a user journey redesign and WCAG-compliant UI improvements, increasing task completion rates by 20% using SharePoint Designer, HTML5/CSS3, and Adobe Sui

UX UI Design SharePoint)HTML5 CSS3 Adobe Suite User Journey Mapping Usability Testing Digital Transformation

Sr. Graphic Web Designer / Dev

SADA Systems Inc.

Jan 2014 - Sep 2014 (8 months)

• Led UX strategy for a corporate Microsite by conducting comprehensive user journey mapping and in-depth stakeholder interviews, which informed targeted redesigns that increased user satisfaction by 20% and task completion rates by 15%.

UX Strategy Graphic Design Web Development Design Systems Journey Maps

Owner/Creative Director

HANSGRAPHICART

Jan 2002 - Jan 2014 (12 years)

Directed full-stack UX and digital branding for clients in tech, fashion, and entertainment, aligning creative vision with business objectives and increasing client acquisition by 15% with 95%+ satisfaction ratings. Managed hybrid design teams producing over 12,000 digital and 3D assets, fostering a collaborative, high-performing culture and ensuring quality through rigorous UI audits and cross-de

UX Design Creative Direction Team Management Design Audits AI Innovation

Education

Degrees, certifications, and relevant coursework

MIT xPRO

Certificate, Designing and Building AI Products & Services

2025 - 2025

Currently pursuing a certificate in Designing and Building AI Products & Services from MIT xPRO. This program focuses on the practical aspects of developing AI-powered products and services.

North Carolina A&T State University

Master of Business Administration, Business Administration

Completed a Master of Business Administration at North Carolina A&T State University. This program provided a strong foundation in business principles and management strategies.

Pratt Institute

Master of Science, Visual Communication

Obtained a Master of Science in Visual Communication from Pratt Institute. This program focused on advanced concepts in visual communication and design.

Otis College of Art and Design

Bachelor of Fine Arts, Visual Communication

Earned a Bachelor of Fine Arts in Visual Communication from Otis College of Art and Design. This degree provided comprehensive training in visual communication principles and practices.