★★★★★
“I can confidently say she is an exceptional product designer who consistently delivers impactful results. Doyeon is user-centric, adaptable, positive & kind, which made it a pleasure to collaborate with her!”
Curiously wired.
Habitually asking “Why”.
But I promise it’s going to be fun. 
(no it’s not a crazy smile)
8 years of UX across North America, Europe, and Asia taught me to design for how different people see the world, shaped by real cross-cultural insight. Design is how I make sense of it. Building is how I make it real.
Featured works
All Works
Testimonials
It’s not just about the work, it’s about how we work together. Collaboration is what makes it meaningful.
Services
Design lives between logic and feeling. That’s where I do my best work
UX/UI Design
I design interfaces that feel obvious to use, grounded in research, shaped by real user behavior and refined until every screen earns its place.
Design Engineering
Concept to working product. I design, build, and test in one flow, crafted by hand, tested with AI and automation.
Brand Direction
I shape how a product looks, sounds, and feels, building a visual and verbal identity that stays coherent from the first impression to the smallest detail.
FAQs
Answers to common questions to help you understand the process and how we can work together
Get in touchI start with understanding users, goals, and constraints before touching a screen. From there it’s structure, then interface, then testing and refinement. Because I also build, I can move from concept to a working, testable product in one continuous flow, so ideas get validated early instead of living in a static mockup.
My background spans SaaS, e-commerce, and brand sites across North America, Europe, and Asia. That international experience means I design with cross-cultural users in mind, not just one market.
I’m used to working across cross-functional teams like product management, engineering, research, data analytics, and marketing. I’m comfortable translating between them: turning research and data into design decisions, and design decisions into something engineering can build. Whether you need me embedded in a team or working independently and syncing at milestones, I adapt to how you already work.
It depends on the work. I run on a flexible cycle rather than a fixed one. I’ve delivered fast, focused sprints (a landing page or a feature in a week or two), and I’ve committed to long-term builds that run for months. Tell me your deadline and scope, and I’ll shape a plan that fits.
Absolutely. If you already have a brand system, I design within it, respecting your type, color, and voice so everything stays consistent. And if there are gaps, I’ll flag them and can extend the system where it needs to grow, without breaking what’s already working.
The fastest way to reach me is by email at doyeon.sung.design@gmail.com. I usually reply within one business day. If you’d rather talk it through, just request a call in your first email and we’ll figure out whether it’s a fit.