I'm a multidisciplinary designer and developer with a passion for crafting digital experiences that are both beautiful and functional. Based in San Francisco, I work with startups and established brands to bring product visions to life.
My approach blends creative intuition with technical rigor — I believe the best products emerge when design and engineering work in harmony, not in silos. Every project starts with understanding the people who will use it.
Over the past 5+ years, I've delivered 50+ projects across product design, web development, brand identity, and mobile experiences — serving clients in 12 countries across fintech, health, e-commerce, and creative industries.
When I'm not designing or coding, you'll find me exploring photography, experimenting with generative art, or hiking the trails around the Bay Area.
End-to-end product design from user research and wireframing to high-fidelity prototyping and design systems. I use data and intuition to create interfaces that users love.
Full-stack development with modern frameworks and clean architecture. I build responsive, performant web applications that scale with your business.
Strategic brand development including logo design, typography, color systems, and visual language. I create cohesive identities that tell your story.
Native and cross-platform mobile app design with a focus on gesture-driven interfaces, offline capability, and delightful micro-interactions.
Qualitative and quantitative research including user interviews, usability testing, analytics analysis, and A/B testing to validate design decisions.
Strategic consulting on product direction, design operations, and team building. I help organizations establish design maturity and processes.
Leading product design for the core platform serving 100K+ users. Established the design system, mentored junior designers, and drove a 40% improvement in key UX metrics.
Bridged design and engineering for a boutique creative agency. Delivered 20+ client projects spanning web apps, e-commerce platforms, and interactive brand experiences.
Designed and shipped products for fintech and health-tech startups. Contributed to the company's first design system and established user testing practices.
Started the journey designing marketing sites, email campaigns, and pitch decks. Learned the fundamentals of typography, layout, and client communication.
Have a project in mind, a question about my work, or just want to connect? I'm always open to conversations about design, technology, and building great products.
hello@ziyen.designEvery project begins with discovery — understanding your goals, users, and constraints. I then move through research, ideation, prototyping, testing, and development. I believe in iterative collaboration with regular check-ins to keep everything aligned.
It depends on scope and complexity. A simple brand identity or landing page might take 2-4 weeks. A full product design with development typically runs 8-16 weeks. I'll give you a clear timeline after our initial conversation.
Both! I love working with early-stage startups to help shape their product vision, and I equally enjoy partnering with established teams to refine and elevate their existing products. Every project gets the same level of care and attention.
For design, I primarily use Figma, with occasional work in Illustrator and After Effects for brand and motion. For development, I work across React, Next.js, Vue, Node.js, and React Native. But tools change — the principles of good design stay the same.