Identification System.User.Portfolio_v2.0

RUNKAI
ZHANG

Designer and engineer building software that puts people first.

Section 01

About

I'm a junior studying Human Centered Design & Engineering at the University of Washington. I'm interested in human-centered AI and building tools that people actually want to use — from iOS apps to full-stack platforms.

Outside of work, I shoot film photography and tinker with open-source projects, exploring the intersection of analog aesthetics and digital precision.

Section 02

Core Capabilities

01. DISCIPLINE

HCI & Design Research

User research, usability testing, interaction design, and accessibility-first thinking.

02. INFRASTRUCTURE

Full-Stack Web

SvelteKit, React, TypeScript, Node.js, and modern deployment pipelines.

03. INTERFACE

iOS & Swift

SwiftUI, CloudKit, App Store distribution, and native platform conventions.

04. LOGIC

AI/ML Infra

LLM integration, RAG pipelines, vector search, and open-source AI tooling.

Section 03

Selected Works

View Inventory →
Design & Research

Neural Link

A UX case study redesigning focus and belonging for international students with ADHD — research-driven design from HCDE at UW.

Built with: UX Research · SvelteKit

Web & Platforms

TeleCoach

Privacy-first coaching platform, IRB-compliant and HIPAA-adjacent for secure client interactions.

Built with: SvelteKit · TypeScript

iOS & Native

Notable

High-performance markdown editor for iOS with 500+ downloads and integrated vector search.

Built with: SwiftUI · App Store

© 2025 Runkai Zhang — Document Type: v2.0-technical-spec