Sam Kim (Sangho Kim)

I'm a backend engineer who designs distributed systems. Over eight years at a fintech startup — building various blockchain wallet products, distributed systems, and a TSS-based MPC signing system — this blog is where I keep what I've felt and learned along the way.

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Education

1. Yonsei University, Graduate School of AI

   M.S. in AI Computing · in progress

2. Purdue University

   Computer & Information Technology · Visiting Researcher (M2M Lab)

3. Chung-Ang University

   B.S. in Computer Science and Engineering

Experience

1. 2018 — Present

   Hecto Walletone (formerly Hexlant)

   Backend Lead · Founding Member

   Built the backend of Octet — a Node.js/TypeScript multi-chain wallet API platform — from its initial architecture through to a distributed system handling around five million transactions a day. Designed a TSS-based MPC signing system and the internal operations infrastructure alongside it, and led the company's ISMS certification and Virtual Asset Service Provider (VASP) licensing.

2. 2016 — 2017

   Hyundai AutoEver

   Researcher · Advanced Technology Center, IoT Team

   Designed and built the backend of Hi-oT 2.0, a OneM2M-based smart home IoT platform deployed in Hyundai Hillstate apartments, and contributed to the lending and securities core of next-generation financial systems for Hyundai Card, Capital, and Commercial.