- Managed projects and provided technical support to ensure the smooth execution of client projects.- Led the Cloud Platform team with the goal of refining the network that connects the CI/build system, AWS, and the development environment, as well as establishing and operating various product testing environments. Additionally, managed infrastructure and cloud operations in compliance with internal information security standards, including ISMS-P and other compliance regulations. - Led the QA team to efficiently and seamlessly conduct scenario-based QA testing in line with the fast software release cycles.

- Led the software project for SERVI AIR, newly introduced robot that sterilizes air, floors, and purifies air. Wrote ROS nodes to integerate wireless charger, LTE wireless adapter.- Led the diagnosis of deployed robots. Revised and maintained software build system, DevOps tasks.- Designed fleet managetment system of indoor self-driving robot, based on a SQL database, and revised the system.

- Server-side software engineer responsible in web-based medical software product.- Java web application on Spring 5 as backend, a precise EEG viewer and scientific components as frontend based on Vue.js.

- Developed personalized product recommendation models using user behavior log and product database of retail shopping and book. Studied and developed ML models, algorithms. Led a team of developers and analysts.- Participated in two AI projects, a joint-project with Yonsei Severance Hospital on epilepsy, and a survey project on unattended checkout service using computer vision like Amazon Go.

Had a role as server-side developer of performance ad-system in LINE messenger. Designed and implemented API of Dynamic Products Ads of LINE for Amazon JP, and launched DPA service successfully. Implemented request mediation feature in SSP while launching new ad products for Thailand. Analyzed cause of click-event loss between SSP and DSP.

Server-side developer of ‘Kakao Buy’, a commerce platform of New Commerce Team, usually known as ‘Kakao Gift(카카오 선물하기)’. Covered `Order’ domain of delivery product and mobile voucher, `Claim process’, extending channels of product placement, and others. Had a role as server-side developer of `Kakao Pick’, a social commerce service.

- Had a role as staff of CTO and data analysis division.- Service developer of Daum Search. Built and operated several major `search collection’ such as Twitter, Blog, etc. Implemented a text-mining based service for `2012 General Election`. Rebuilt data-integration process among backend data storages and search engine, improved infra-systems of search such as web crawler, large-scale image storage, near-duplicate document db and others.

- Small software company focused on search engine and business system integration.- 2017.09 ~ 2010.01 : Charged in software solution business and system integration business. Covered project management as well as technical pre-sales, system design, and quality assurance activity.- 2003.09 ~ 2007.08 : Product manager of search engine solution, covered software development, technical support, and project leading.

Developer of a project that creates intelligent human-like characters in mobile device.

Charged in search engine, search service for Yahoo Korea. Built R&D team for next version of search engine and implemented several core features.