안녕 👋🏼

I’m Hyunghwan. I design products, build things, and am trying to write more.

At AppZen, I design AI products for finance teams. Outside of work, I’m building ShowKit, an open-source tool for creating interactive product demos with coding agents.

Previously, I spent six years designing Photoshop at Adobe. Before that, I designed Seerflix, a browser-based storytelling tool for business professionals.

I’m interested in the space between design and engineering—how ideas become real products, how complex systems can feel clear and trustworthy, and how AI is changing the way designers work.

Experience

Senior Principal UX Designer, AppZen | May 2023 - Current

Lead design for a platform that enables enterprise finance teams to build and deploy their own AI agents, providing end-to-end workflows for expense auditing and accounts payable.
Collaborate closely with leadership, Product, and Engineering to define product vision and iterate on agent-creation experiences, ensuring usability and trust.
Advocate for user-centric design principles and accessibility, scaling adoption of AI-driven automation across multiple product lines.

Founder, sqncs studio | Aug 2022 - Current

Build and run Diced OS, tools for small/wholesale bakeries
Independently designed, developed, and shipped Diced OS from 0 → launch, including user acquisition and early customer validation.

Senior UX Designer, Adobe | Sep 2016 - May 2022

Effectively designed and spearheaded the implementation of innovative machine learning features, enhancing the image editing capabilities of Photoshop
Created design prototypes and conducted user research through moderated and unmoderated techniques, validating designs and ensuring superior user satisfaction
Collaborated closely with product managers and engineers to guarantee alignment between designs, customer requirements, and business objectives, leading to successful product launches and improved customer satisfaction

Interaction Designer, Seerflix Inc. | Jun 2015 - Jul 2016

Crafted intuitive user flows, wireframes, interactions, and UI assets for a WebGL-based interactive 3D storytelling tool, delivering a seamless user experience and high engagement levels
Developed iterative prototypes using HTML, CSS, and JavaScript, increasing efficiency and user satisfaction while reducing development time by 20%
Conceived and actualized new product concepts, designed visually appealing user interfaces, and produced comprehensive UI specifications, wireframes, and prototypes, showcasing proficiency in product design and development