Hi, I’m Ji Su.I’m a product-minded designer who builds.

I'm currently building agents that shop for humans autonomously. Lately, I've been interested in building agentic workflows, better developer tools, and helping product teams build, experiment, and learn faster. My title usually says “designer”, but I talk to users, decide what to build, and build it too. Everyone on the team should talk to users (engineers included). I'm known for making this into a team sport. I like ambitious work, but prefer to work with people who don't take themselves too seriously. Please send memes. I live in SF. I moved here mostly for the trees and fog.

Scroll to explore Ji Su’s deskwork

A few problems I’ve worked on.

Independent Project2026

Interactive story about customer discovery and building the wrong thing

An interactive pixel-art story about two brothers starting a business in an enchanted forest, making questionable product decisions, and discovering what their customers actually need.

Game Design
Design Engineering
Interactive Storytelling

Visa2026

Enabling autonomous shopping with agents

Designed and built a shopping agent to demonstrate the Visa Intelligent Commerce APIs. Exploring autonomous and human-in-the-loop agentic workflows for consumer shopping and developer/vibe-coding use cases.

Autonomous agent design
Product Design
Design Engineering
B2B
Developer Experience

NMI2025

Design studio for low-code payment components

Built a design studio on NMI’s Appearance API, so companies can create a theme once and apply it across low-code components for easy customization.

Product Design
Design Engineering
B2B
Developer Experience

NMI2025

Improving developer onboarding to payments

Cut developer onboarding from a multi-week, sales-led process to minutes with a sandbox environment and self-service sign-up.

Product Design
Design Engineering
B2B
Developer Experience

Made out of curiosity.

Generate your avatar

Make a mini

Turn a photo into a pixel-art portrait or a playful video game avatar.

An explorable 3d world

Forest walks

A small, explorable world inspired by San Francisco’s Presidio.

Rendered based on PDB data

Plastic DNA Model

An old molecular model kit, reimagined in the browser using real DNA structure data.

A little more about me.

Hi! I’m Ji Su, a design technologist and product builder in SF. I went to grad school planning to teach biochemistry, but on a whim, signed up for my first hackathon and got a taste of product development and entrepreneurship. I’ve been designing and building products ever since.

I’ve never felt like I belonged neatly in one role—design, product, or engineering. I like understanding problems, designing solutions, building them, and testing what actually works. With AI blurring those boundaries, there’s never been a better time to be a hybrid product builder.

Lately, I’ve been exploring two big questions:

What makes people trust AI agents enough to let them act on their behalf?

I’ve been designing agentic experiences, and I think trust is one of the most interesting design challenges ahead. My hypothesis is that trust comes from the right combination of context, visibility into what agents are doing, and the ability to step in and take control. I think designing for agents will require us to think beyond chat interfaces and return to systems and service design.

How do we help product teams become better builders?

As AI makes building faster and more accessible, I’m interested in how we make sure we’re building better, not just more. I love helping teams adopt new tools, experiment with ideas, and learn from real user behavior. I’m also a big believer that talking to users should be a team sport. Engineers included.

Outside of work, I enjoy exploring cities and nature, collecting stationery, going on logistically challenging road trips, and starting small businesses for fun. I’m also an MBA candidate at UC Berkeley Haas School of Business.

Find me on LinkedIn

Let’s connect!

Find me on LinkedIn