Siyeon (Mary) Kim · UX/UI Designer · New York
Designing with evidence, finished with craft.
Research-backed mobile and web design across healthcare, commerce, and language learning — from first interview to tested prototype.
Scroll to exploreSelected Projects
Three projects that show how I work — each starts with a real problem and ends with evidence-informed design decisions.
About
UX/UI Designer with professional graphic-design experience in e-commerce, branding, and retail. Through graduate study and independent projects, I have developed hands-on experience in user research, interaction design, prototyping, and usability testing. I combine user-centered thinking with strong visual craft to create clear, carefully built digital products.
Capabilities
UX Research
Interviews, heuristic evaluation, affinity mapping, personas, usability testing — evidence before pixels.
Product Design
Information architecture, user flows, wireframes, and high-fidelity UI for web and mobile.
Design Systems
Color tokens, type scales, and component libraries that keep large teams consistent and fast.
Brand & Visual
Packaging, campaign, and identity work across professional and personal projects — visual craft that carries into product.
How I Work
Process,
grounded in people.
Every project is different, but my process is grounded in understanding people and aligning design decisions with business goals.
Discover
User interviews, heuristic evaluation, and competitive analysis. I invest in understanding the real problem before touching a frame — assumptions are the most expensive mistake in design.
OutcomeClear goals, evidence-based insights, research brief
Define
Personas, journey maps, and problem statements. Research becomes a focused design brief with explicit success criteria — so every later decision is traceable to evidence.
OutcomePersonas, journey map, problem statement
Design
Information architecture, wireframes, high-fidelity UI. I iterate rapidly, justify decisions with research, and build systems — not just screens — so the work scales beyond me.
OutcomeFlows, wireframes, final UI, prototype
Deliver
Usability testing, refinement, and handoff. I test with users, document decisions clearly, and deliver work that teams can build on — including what I'd improve next.
OutcomeTested design, documentation, handoff