Architecture
Turn complex domains into explicit boundaries, responsibilities, contracts, and operating models.
Systems builder · Seoul
Blockchain infrastructure, AI-native products, and robotics research—connected by one direction: benefiting humanity.
27
Documented systems
2020—NOW
Building trajectory
03
Meaning layers
SEOUL
Current base
Humanity stack
Three technical domains, one continuous direction: expanding what people can do, coordinate, and understand.
Robotics systems
What can people do?
Embodied systems that extend human action through control, kinematics, interfaces, and precise motion.
Blockchain infrastructure
How can people trust?
Coordination systems for payments, settlement, ownership, verification, and credible digital trust.
AI-native products
How can people reason better?
Decision systems that extend research, planning, judgment, memory, and operational leverage.
Selected work
Six representative systems are shown here. The complete archive documents the wider engineering journey.
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Beatoz Labs / Payment Gateway
Solo-built crypto payment gateway monorepo that served as the payment-facing domain inside a shared Beatoz dev-pilot rollout spanning issuer, treasury, custody, CKYC, and adjacent financial services. Combines a NestJS API, chain-specific monitoring workers, HMAC-signed webhooks, and admin/merchant dashboards.

Beatoz Labs / Treasury Infrastructure
Solo-built treasury operations monorepo for transfer, FX, reserve, settlement, and monitoring workflows. It functioned as the financial operations domain within the same Beatoz dev-pilot rollout as CPG, clearing, CKYC, custody, and issuer-adjacent interfaces.
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Personal Project / Web3 Protocol
Solo-built hybrid (Web2 + on-chain) agent protocol designed for AI-agent participation: sponsors post jobs, agents submit work, and outcomes are verified via voting + reputation under staking/slashing rules. Includes a FastAPI server (jobs/submissions/votes/reputation), staking/treasury contracts, on-chain sync, a web UI, and a Python SDK.
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Personal Project / Agent Operating System
Solo-built personal AI operating system with a Fastify orchestration backend and a Next.js HUD interface. Handles provider routing, missions/councils/executions, approvals, workspaces, memory, watchers, and dogfood-tested operational widgets.
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Academic / Medical Robotics
Developed a handheld multi-DOF laparoscopic surgical device with detachable robotic tools (Patent KR102199910B1). The system overcomes the limitations of traditional manual tools by enabling precise articulation and rotation through an embedded control system, bridging the gap between manual and robotic surgery.
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Academic / Marine Robotics
Developed an empirical mathematical model for a 2-DOF azimuth thruster to overcome the limitations of analytical modeling in complex hydrodynamic environments. The project aimed to derive a precise transfer function covering the entire frequency range (low to high) using the Signal Compression Method (SCM).
View →How I build
The durable work is not a feature list. It is the boundary model, failure behavior, observability, and recovery path.
Turn complex domains into explicit boundaries, responsibilities, contracts, and operating models.
Design for idempotency, retries, observability, reconciliation, and consistent state under failure.
Structure code, evidence, and knowledge so humans and software agents can inspect and extend the system.
Carry prototypes through deployment, diagnostics, recovery paths, and day-two operational tooling.
Writing system
Engineering deep dives, research, build logs, essays, and durable notes connected to real projects.
Open Writing→What lasts is not only what was built, but why it was built that way.