Experience

Toss Securities

• South Korea
• Financial Services
• 1 - 100 Employee

• Search Engineer

  • Apr 2021 - Present

  Designing, Developing and operating search -unified and desktop(like spotlight) search with 17 collections(stock, recommendation, news, disclosures, community documents, and so on) -, category and rank platform from scratch before service had not been released. Started as the first engineer and led a team of 2 developers, one product owner. Designing, Developing and operating search -unified and desktop(like spotlight) search with 17 collections(stock, recommendation, news, disclosures, community documents, and so on) -, category and rank platform from scratch before service had not been released. Started as the first engineer and led a team of 2 developers, one product owner.



(주)우아한형제들 (Woowa Bros.)

• South Korea
• IT Services and IT Consulting
• 500 - 600 Employee

• Software Engineer

  • Apr 2019 - Mar 2021

  Developing and operating search(including typo correction, autocomplete, customised morpheme analyser, etc.) and ad-listing platform which is dealing with 800K per min, started out as only software engineer and currently lead a team that includes five developers, two product owners and two knowledge analysts. The new platform, released in October 2019, increased weekly UV by 446%(0.95M -> 5.19M) and the order share by 32%p(3% -> 35%). Participated in TF for a new location platform using s2 and hexagonal grid, and developing and operating a system that predicts the estimated delivery time and confirms whether the user's location is within the deliverable area.



Withinnovation

• United Kingdom
• Events Services
• 1 - 100 Employee

• Software Engineer

  • Apr 2018 - Apr 2019

  Developed and operated a new search and catalog platform with legacy systems at the same time. The transition to new platforms brought about 77% AWS cost savings as a result. Developed and operated a new search and catalog platform with legacy systems at the same time. The transition to new platforms brought about 77% AWS cost savings as a result.



Samsung Electronics

• South Korea
• Computers and Electronics Manufacturing
• 700 & Above Employee

• Software Engineer

  • Feb 2015 - Mar 2018

  Built the Semiconductor Equipment Analysis System to support internal engineers of 8 processes and 20 models, from the very beginning, working on everything from design through development, and extended the system to the China campus. Achieved the effect of a ￦25 billions reduction in capital investment by improving productivity by 33%, which happened because of a decrease in defect rates due to quality improvement activities. Built the Semiconductor Equipment Analysis System to support internal engineers of 8 processes and 20 models, from the very beginning, working on everything from design through development, and extended the system to the China campus. Achieved the effect of a ￦25 billions reduction in capital investment by improving productivity by 33%, which happened because of a decrease in defect rates due to quality improvement activities.



Republic of Korea Air Force

• Defense and Space Manufacturing
• 200 - 300 Employee

• 중위(Lieutenant)

  • Jan 2011 - Dec 2013

  Managed teams to operate welfare facilities of Gwang-ju air base (running with a budget of 10 billions won annually), and held Max-Thunder Exercises (the biggest Air Force exercise of US in Asia/Pacific, participating more than 100 fighter aircraft), acting as the manager of support. Managed teams to operate welfare facilities of Gwang-ju air base (running with a budget of 10 billions won annually), and held Max-Thunder Exercises (the biggest Air Force exercise of US in Asia/Pacific, participating more than 100 fighter aircraft), acting as the manager of support.