Human × AI
Where should human judgment, responsibility, rights, and agency remain in the age of AI?
Founder & Independent Product Builder · Hédéonix
Questions across boundaries,
translated into usable tools.
Yeonsun (Lucy) Shin is the founder and independent product builder behind Hédéonix. Trained in law, international trade, medical ethics, and U.S. law, she later served as the RA/QA team lead at a SaMD and digital-health startup. Her work spanned regulatory and quality operations, including a rewrite of the quality manual. She now turns questions at the intersection of law, medicine, AI, and everyday life into usable software.
BUSAN ↔ SEOUL · REMOTE & INTERNATIONALBook a 30-minute meeting on Google Calendar ↗Full experience on LinkedIn ↗
What I work across
Law × Medicine
How can questions in technology law and applied ethics be structured where law and medicine meet?
Ideas × Tools
How can everyday friction and professional knowledge become products that actually work?
Background & practice
Different disciplines,
connected by one practice.
LL.B. · B.A. in International Trade
A double major, with particular interest in administrative law and extensive FTA-related coursework.
Seoul National University College of Medicine · Master's
Studied judgment, care, and responsibility in medicine through the language of ethics.
The Ohio State University · LL.M.
Expanded a comparative framework through U.S. legal study.
SaMD · Digital Health · RA/QA Lead
Led regulatory and quality work at a startup, including product regulatory operations, quality-system work, and a rewrite of the quality manual in an environment shaped by ISO 13485, IEC 62304, and ISO/IEC 27001. This is not a certification claim.
K-Digital Training · Cybersecurity & Infrastructure Operations
Completed ESTcamp's full-time intensive program, studying information-security technologies and relevant law for eight hours a day. On the Flag Hunters project, I built firewall infrastructure and configured network-gateway policies using pfSense, OpenVPN, and Tailscale.
Ongoing project index
Built and tested
before becoming products.
This index is separate from the Hédéonix product portfolio. These are Yeonsun Shin's ongoing projects: spaces for building and testing a problem and its proposed solution. A project may graduate into a Hédéonix Product once its audience, scope, and operating responsibility are clear.
Ongoing project · Number fluency · Two editionsGeoNum/ˈdʒiː.oʊ.nʌm/
Offline practice for the moments when language and large numbers stop flowing naturally.
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Ongoing project · Residence diary & home recordDomiary/ˌdoʊ.miˈɑː.ri/
A private residence log for addresses, postal codes, maintenance, costs, and memories across repeated moves.
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Ongoing project · Shared-home separationUNPAIR/ʌnˈpɛr/
A local-first tool for deciding ownership, division, and sale preparation when a shared home ends.
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Ongoing project · Clinical work diary · Career archiveCLINORARECORD/klɪˈnɔː.rə ˈrɛk.ərd/
A local-first mobile work diary that helps CRCs and CRAs capture today's work while it is fresh and carry reviewed experience into tomorrow's career.
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Independent Project · Korean cooking for kitchens abroadBusanTable/buːˈsɑːn ˈteɪ.bəl/
A friendly guide to making Korean food abroad with the ingredients and cooking tools already within reach.
↗A working credo
Test what is good,
and make it useful to a neighbor.
Faith is not decoration here. It is a quiet standard for deciding what to make and what to leave behind.
Collaboration
Based between Busan and Seoul,
open to remote and international work.
For current employers, titles, and dates, see LinkedIn. This page focuses on product direction, independent projects, and the way questions become working tools.