Aergo 블록체인 프로젝트 설계 및 리드. Python SDK 개발. C# SDK 개발. IoT 플랫폼, Lite, 개발. 이벤트 참석 및, 발표, 데모 시연. ● Main contributor of blockchain, Aergo ● Main contributor of python SDK, HeraPy, and C# (.NET Standard), HeraCs ● Lead and develop public blockchain as a service (BaaS) project ● Design and elaborate token economies and sidechain/microservice interoperability ● Lead and develop blockchain orchestration, monitoring, and analyzing framework using Golang, Flask, K8s, Docker, ES, Metricbeat, and Fluentbit ● Contribute blockchain for IoT using SQLite, Lite using C, SQLite, and Flask

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Blockchain as a service (BaaS) 를 위한 orchestration f/w 개발. BaaS를 위한 모니터링 및 분석 플랫폼 개발. IoT 용 블록체인 개발 및 모니터링 플랫폼 개발. Timestamping 서비스 (SaaS) 개발. 영국 R&D 디렉터로 엔지니어 고용, 프로젝트 시작 및 로드맵 관리, 이벤트 참석 및 발표, 커뮤니티 관리, 고객 관리 등등. General Manager, Europe (Jan 2019 - July 2020) ● Manage and admin all operations of the office ● Face with and present to clients for all issues to support sales, consulting, and education of EMEA ● Make business use cases and materials of the company products for sales and consultants ● Make an alignment of the company with the vision and strategy of the company Director of R&D, Europe (Jan 2018 - July 2020) ● Direct and oversee the work of all functions and members to align with the vision of the company and improve its profitability ● Build a motivational, high-performance work environment for the R&D and engineering teams ● Manage key engineers and developers, including performance monitoring, coaching, mentoring, and training ● Direct, manage, and develop the timestamping service as SaaS using Vue.js, Django, and Golang ● Directed and managed to develop BaaS product and sales materials

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Private 블록체인 smart contract (Lua , SQL) VM 개발. Smart contract 부분 암호화 개발. Private 블록체인 연구, 개발, 오픈 커뮤니티 활동 (w3c, hyperledger). 금융보안원 블록체인 프로젝트. 금융결제원 블록체인 프로젝트. ● Researched new tech of blockchains to improve the private blockchain ● R&D new consensus algorithm based on Game Theory ● Developed upgradable smart contract (SC) f/w ● Designed and developed partial private ch. ● Designed and developed new SC parser and executor ● Developed new state DB for SC ● Developed parameterized/secure and asymmetric enc/dec for SC ● Involved and worked in open source community, Hyperledger and W3C ● Developed Smart Oracle of FSI ● Developed SaaS demo for KFTC

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보안 연구소 소속으로 인증 및 보안 제품 개발 및 관리. 분산 연구소 소속으로 오픈 스팩 DMTF WBEM 기반 분산관리 시스템 개발 및 관리. DB 연구소 소속으로 sdk, 파싱 및 실행 엔진 레이어, 분산 DB, Virtual DB 개발 및 관리. R&D Team Manager of DB R&D 2011 - 2013, 2014 - 2015 (over 3 years) ● Managed and drove the team of compatibility, usability, and communication layer ● Managed and led to develop new features of APIs, SDKs, and tools ● Managed and updated modules with the engine, versions, and standard specifications ● Managed and handled related issues and timetables with other R&D, engineering, or QA teams Principal Software Engineer of DB R&D 2009 - 2015 (over 5 years) ● Designed and developed new virtual DB ● Designed and developed new distributed management system for the cloud DB ● Researched and developed the relational database, TIBERO RDBMS, as a core architect ● Maintained and developed communication framework ● Maintained and developed part of SQL executor, External Procedure, External Table, DB Link, and Data Pump ● Maintained and developed client-side connectivity layer ● Maintained and developed TUI/GUI tools Senior Software Engineer of System Management System R&D 2009 (9 months) ● Designed new distributed management system prototype based on WBEM of DMTF ● Developed a log collector and analyzer using C ● Maintained build and test system using SVN, CMake, and CUnit Software Engineer of Security R&D 2008 (11 months) ● Maintained and developed the authorization software, SysKeeper OS, using C ● Maintained the authentication software, SysKeeper IAM, using Java, JDBC, and Kerberos

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PDA 등 임베디드 모바일 시스템 펌웨어 및 어플리케이션 개발. ● Developed embedded firmware and application of mobile devices using embedded C/C++, WinAPI, MFC, PalmOS, WinCE, PPC, WIPI, and KT BREW) ● Maintained and developed a middleware for parsing and generate a web xml using Java

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