Experience

Composable Foundation

• Cyprus
• Software Development
• 1 - 100 Employee

• Senior Frontend Developer

  • Mar 2023 - Present



TRU Technologies Limited

• South Korea
• IT Services and IT Consulting
• 1 - 100 Employee

• Frontend Developer

  • Jul 2020 - Mar 2023



KOLON BENIT Co., Ltd.

• South Korea
• IT Services and IT Consulting
• 1 - 100 Employee

• Frontend Developer

  • Oct 2019 - Jun 2020

  Kolon messenger with ReactJS / Electron Kolon messenger with ReactJS / Electron



Spendit

• South Korea
• IT Services and IT Consulting
• 1 - 100 Employee

• Backend / Frontend Developer

  • Dec 2016 - Jul 2019

  Backend API / business logic with Ruby on Rails / PostgreSQL Frontend with ReactJS DevOps (AWS) Backend API / business logic with Ruby on Rails / PostgreSQL Frontend with ReactJS DevOps (AWS)



TheVentures Co., Ltd.

• South Korea
• Venture Capital and Private Equity Principals
• 1 - 100 Employee

• Software Developer

  • Jan 2015 - Nov 2016

  Web server backend with Ruby on Rails Web server backend with Ruby on Rails



Job for Sure HQ

• Gangnam-gu, Seoul, Korea

• Software Developer

  • Apr 2015 - Sep 2016

  Building job matching service in the Indian marketplace(Elasticsearch) Web/application backend (Ruby on Rails, Postgresql, AWS, Elasticsearch) Web frontend (ReactJS) Building job matching service in the Indian marketplace(Elasticsearch) Web/application backend (Ruby on Rails, Postgresql, AWS, Elasticsearch) Web frontend (ReactJS)



Seedtime, Inc.

• Software Development

• Software Developer

  • Apr 2013 - Jan 2015

  Backend with RoR, Postgresql, MongoDB, Java/Spring, Redis Backend with RoR, Postgresql, MongoDB, Java/Spring, Redis



KOSCOM

• South Korea
• Capital Markets
• 100 - 200 Employee

• Software Engineer

  • Jul 2012 - Dec 2012

  -Advancement of the information processing function of Exture+ (2012.11 – 2012.12) -Improvement of Exture+'s performance due to algorithm improvement of in-memory DB (C++) -Exture+ Unix POC (2012.08 – 2012.10) *Ported the Exture+ running on Linux to HP-UX systems *Exture+ on Unix performance improvements: system environment changes and algorithm modifications *Reimplementation of some modules based on TDD: logic verification and code optimization (C / C++) -Advancement of the information processing function of Exture+ (2012.11 – 2012.12) -Improvement of Exture+'s performance due to algorithm improvement of in-memory DB (C++) -Exture+ Unix POC (2012.08 – 2012.10) *Ported the Exture+ running on Linux to HP-UX systems *Exture+ on Unix performance improvements: system environment changes and algorithm modifications *Reimplementation of some modules based on TDD: logic verification and code optimization (C / C++)



MONITORAPP

• South Korea
• IT Services and IT Consulting
• 1 - 100 Employee

• Security Software Engineer

  • Jun 2007 - Apr 2012

  - DB Firewall (C / Kernal Programming) Implemented security module for detecting hacking patterns from the network packets on FTP / TELNET protocol - VoIP Firewall (C, JAVA) Added security module for detecting hacking patterns by decrypting & analyzing TLS packets on SSH / TLS protocol Added encryption algorithm named AREA which is given by KISA in the OpenSSL source code Added NAT module from Netfilter into VoIP Firewall Added SIP/RTP based call functionality into the Sipdroid (Call application based on VoIP) - Web Firewall (C / Kernal Programming) Implemented security pattern update server/client Implemented personal information(such as residence number/credit card number) leakage detection module UI modification (PHP / PostgreSQL) Supported to get CC (Common Criteria) certification Customer response/maintenance (customers in the financial/public sector such as Mirae Asset, Ministry of National Defense, Public Procurement Service, etc.) - Fasoo.com - XDRM Analyzed the private protocol used by ACUBE, a document upload program used by fasoo.com, and developed a program that encrypts/decrypts documents using fasoo.com,'s XDRM module Show less