Hi :D
I'm HyunJu (Elle) Song
Hyunju Song

01About

I build products at the intersection of business, technology, and user experience — always with a question in mind: how can AI and data actually help people, not just automate things? Currently based in Irvine, California through Kookmin's Global PBL Program (AI for Business track), where I lead product at Trywebb and drive design and launch content at Sellii. Background in Management Information Systems and Software Engineering. Authorized to work in the US through J-1 Academic Training.

02Projects

Trywebb

AI-powered idea validation for early-stage founders. Architected an 8-agent analysis system with a prompt engineering overlay. Three-tier SaaS serving both founders (decision tool) and investors (discovery surface).

Product Management
Prompt Engineering
Agent Architecture
React
LLM
SaaS

Sellii

AI agent that scans Facebook Marketplace, OfferUp, and Craigslist using GPT-4o Vision + Playwright. Cross-checks eBay prices and notifies users of underpriced deals. Users choose their automation level — alerts only, drafted messages, or fully automated.

Product Design
Figma
GPT-4o Vision
Playwright
Agent UX

Welfare Link

Welfare discovery platform bridging Korea's aging population and their adult children. Led a team of 6 through user research with elderly users and their children. Voice-guided interface with family-context AI recommendations.

UX Design
User Research
Figma
Accessibility
Team Lead

Divers(C)ity

Global platform for migrant worker rights, career mobility, and employer communication. Five-module architecture combining AI personalization and blockchain verification. Authored a 16-page proposal and designed 8+ prototype screens solo. 2nd Place, 2025 Global Co-Prosperity Academic Conference.

Platform Design
AI
Blockchain
Figma
Social Impact

Kookmin University Newspaper Website Redesign

Led a full redesign of the Kookmin University Newspaper website as Editor-in-Chief. Restructured information architecture, modernized the visual system, and rebuilt navigation around how readers actually browsed articles. Website traffic grew 40%+ within a semester.

Web Redesign
Information Architecture
Editorial Design

Kookmin University Newspaper Instagram - Reels & Feed Direction

Planned and scripted Instagram Reels and feed content for @kmu_bizon as Editor-in-Chief, then partnered with the design team to bring each piece to life. Defined topic angles, narrative beats, and the visual tone before handoff. Instagram followers grew 1.5× within a semester.

Content Strategy
Reels & Feed Planning
Cross-team Collaboration
Social Media

AI Pet Insurance Platform

Concept proposal for an AI-powered pet insurance platform matching users with plans based on wearable health data. Combined collaborative and content-based filtering for personalization. 2nd Place, 2023 Kookmin MIS × Finance Academic Conference.

Service Design
AI Recommendation
Concept Design

03Work

05Skills

Product Management
User Research
Figma
Prompt Engineering
LLM Integration
Agent Architecture
React
Python
SQL
HTML/CSS/JS
Notion
Git
Korean (Native)
English (Working)

06Awards & Programs

Kookmin Global PBL Program — AI for Business

Kookmin Global PBL Program — AI for Business

Irvine, California

Selected from a competitive applicant pool (12 students) for Kookmin's flagship six-month program combining project-based training with US-based internship placement.

2nd Place — Global Co-Prosperity Academic Conference

2nd Place — Global Co-Prosperity Academic Conference

Kookmin University HUSS

Divers(C)ity — a global platform for migrant worker rights. Selected from 10 finalist teams (37 students).

2nd Place — MIS × Finance Academic Conference

2nd Place — MIS × Finance Academic Conference

Kookmin University

AI-based Pet Insurance Platform. Concept proposal combining AI recommendation systems, wearable health data, and insurance service design.

Contact

Get in Touch

Open to product roles in the US — especially early-stage startups working on AI tooling. Authorized through J-1 Academic Training. The fastest way to reach me is email or LinkedIn.

GitHub
LinkedIn