About

Kirin Choi

CTO at NHN Global, Inc

Software engineer and engineering leader with 20+ years of experience across search engines, advertising platforms, and large-scale marketplace systems. Currently leading the development of FashionGo, a high-traffic B2B platform, with a focus on scalable architecture and data-driven engineering.

Experience

NHN Global, Inc (Sep 2019 ~)
  • CTO of Technology Department
    • Leading a department responsible for developing and maintaining FashionGo, a B2B online marketplace platform
    • Serving approximately 12 million page requests and 7,000 orders per day
    • Managing a team of ~40 software, system, network, and database engineers across the US and Korea
    • https://www.fashiongo.net
NHN Payco (Apr 2017 ~ Sep 2019)
  • Senior Manager of Software Engineer, Ad Platform Development Department
    • Led the development of multiple online advertising platforms, including AceExchange (ADX), AceTrader (DSP), and adlib (SSP)
    • Serving approximately 600 million ad requests and 200 million impressions per day
    • Collaborating with a team of about 20 software developers and service designers
    • https://nhnace.com/
    • https://www.adlibr.com/
NHN Ace (Oct 2018 ~ May 2019)
  • General Manager, Data-tech Development Department
    • Led the development of a web analytics service, AceCounter
    • Processing and analyzing approximately 5 million logs per day
    • Collaborating with a team of about 20 software developers
    • https://www.acecounter.com/
NHN (Nov 2013 ~ Mar 2017), former NHN Entertainment
  • Leader, Search Engineering Team
    • Built and led a 10-member search engineering team
    • Delivered unified search solutions for intranet systems, CloudSearch (Toast Cloud), Bugs (music streaming), and FashionGo.com
    • Drove improvements in search performance and relevance through continuous research and optimization
Futurestream Networks (Jun 2012 ~ Oct 2013)
  • Software Developer, responsible for developing Cauly Mobile Ad Network System ​(Jun 2012 ~ Oct 2013)
    • Developed mobile advertising API servers using MySQL and Apache
    • Analyzed audience activity logs using Hadoop and MongoDB
    • Developed web services for advertisers and publishers using PHP
    • https://www.cauly.net/
  • Software Developer, responsible for developing mobile game server ​(Dec 2012 ~ Oct 2013)
    • Developed mobile game backend services for scoring and billing using MySQL, Redis, and PHP
    • Handled traffic from approximately 100,000 daily active users (DAU)
Naver Corp. (Apr 2004 ~ May 2012), former NHN corp.
  • Leader, Search Engine Development Team ​(Mar 2010 ~ May 2012)
    • Led a team of approximately 10 software developers
    • Developed systems for building search indexes and querying documents across distributed index architectures
  • Software Developer, responsible for developing Naver Japan Search Service ​(Mar 2009 ~ Feb 2010)
    • Developed systems for processing and ranking web documents using Hadoop and C++
  • Software Developer, responsible for developing Naver Search Engine ​(Apr 2004 ~ Feb 2009)
    • Developed core libraries for data storage and document retrieval
    • Built indexing systems for large-scale document search
LKFS (Mar 2002 ~ Mar 2004)
  • Software Developer
    • Developed a Risk Management System

Education

  • Bachelor of Electrical & Computer Engineering, Seoul National Univ.
  • Master of Electrical & Computer Engineering, Seoul National Univ.