Experience

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  Nowdream

  Feb 2016 - Mar 2017

  Staff

  - KT LTE project only for companies (manager screen development and database management)- KTH curation commerce platform (Shodoc(shopping doctor) App RESTful server and IOS / ANDROID GCM push server development)- Building up Hanwha Life Big Data (BDA collects log data related to Hanwha Life Insurance products using Hue Workflow, converting final refinement data to oracle using hql, and developing sankey chart visualization for full inquiry)- 2016 Customized Weather Climate Building Big Data Service Base (sgis script development, map visualization, R-studio personalization service)- Open platform of SGIS LBDMS Step 3 (backbone.js, development of SGIS administrator screen, installation of public certificate, modification of postgresql spatial query query) Show less

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  Ccmediaservice

  Apr 2017 - Feb 2018

  Staff

  - Enhancement of public data of Seongnam city (Windows R2, uploading and downloading mass Excel file file via java streaming processing)- Development of web server using ECB (SDMX), Naver Cloud Platform Centos7, mongodb, postgresql, maria, elasticsearch, nodejs, flask, expressjs, ckan, solr, pylons ), FRED index data crawling and ES-Mongodb interworking RESTful service development)- Korea Meteorological Agency(KMA) 2017 Customized Weather Climate Big Data Service Infrastructure (4th) (Using Q-GIS to convert road node links developed in flash to vector, plotly for red tide visualization, Python Jupyterhub personalization server development and jinja2 framework to fix security management, applying Google analytics)- Participated in development of ebrother personalization solution to monitor and stor logs from four phases of Web Reguest, Response, DB SQL and DB ResultSet using java bytecode instrumentation (BCI) javassistjava, python, javascript, typescript, spring, flask, nodejs, shell, redis, mongodb, postgresql, oracle, maria, korea meteorological office, korean statistical information service, the bank of korea Show less

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  National police agency

  Oct 2018 - Jan 2019

  Assistant manager

  Microfilming of public records by the National Police Agency- New upload/download source development due to problems such as performance of the existing solution (dext5upload)- With better performance than the National Assembly (about 10 times), using OzViewer to automate the creation of tables- Oracle index tuning (about 30 million to 100 million cases)Windows R2, oracle, spring, ibatis

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  Mixtainment

  Jan 2019 - Aug 2019

  Cto

  3D Electronic Business Card Platform- Web (spring, nodejs, kotlin)- 3D (unity, vuforia, wrld3d, babylonjs, threejs, blender)- Mobile web/app/hybrid (cordova, xwalk, pwa)- DB (postgresql)- GIS (postgis, qgis, arcgis, gdal, geoserver)- Server (centos)Development of a platform to search/share a 3D electronic business card and spacespring-boot2, spring-admin, centos7, cordova, pwa, unity, babylonjs, threejs, kotlin, android-studio, blender, rhino, 3dsmax

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  The bank of korea

  Aug 2019 - Sept 2020

  Assistant manager

  Bank of Korea information analysis system construction project,BREIT (BOK Research Innovation Technology, Research Research Platform)A project to maximize and monitor the efficiency of domestic and international time series and index data analysis of 50 institutions by internal employees of the Bank of Korea-- Search engine development --- Elasticsearch, solr, kibana, logstash- Real-time synchronization of Oracle DB and search engine- Development of initial search tokenizer- Provides automatic completion of search terms/synonyms through topic modeling-- Publishing Development --- highchart, highstock, webdatarocks, bootstrap, jquery-- db and rest api design --- r-studio / rsconnect / plumber.R rest api server development- Menu management, department management, user management, personalized chart data visualization meta table designoracle(exa), elasticsearch, logstash, kibana, R, rsconnect, rplumb, powerquery, java, python, sh, centos7, naver cloud platform Show less

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  Sillasystem

  Jun 2020 - Nov 2020

  Freelance

  Development of document security management program (DSM) for the National Police AgencyUsing c, c++, c# to apply a license that can only be used in the Information Department to develop winform open source, completely delete files, develop a window utility, build wix builder in an offline Windows environment, etc.C, C++, C#, Visual Studio

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  Universalrealtime

  Sept 2020 - Jun 2021

  Freelance

  DB non-life insurance open API platform construction- Preparation of AA architecture definition- Creation of infrastructure documents such as HW installation plan/results- Fixed admin portal bugs such as transaction tracking tuningCredit Information Service My Data Comprehensive Portal and Relay Platform Construction Project- Spring boot administrator forum, api professional registration- Spring Cloud Config Server Eureka configuration information provided from DB- Perform authentication filters such as Spring Cloud Eureka Gateway, authorization code issuance, access token issuance, mTLS, etc.- Apptomo API engine solution developmentEstablishment of Tongyang Life My Data information provision system- Postgresql / Redis / Apptomo solution development server construction- Postgresql/Pgpool, Redis/Sentinel, Spring Eureka Retry Filter gateway redundant POC environment establishment and demonstration using Vagrant / AnsibleEstablishment of Hanwha General Insurance My Data information provision system- Postgresql / Redis / Apptomo solution development server construction Show less

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  Kiwoom securities co.,ltd.

  Jul 2021 - Jun 2022

  Freelance

  Kiwoom Securities My Data Platform Construction Web Development- Backend and frontend common utility development- Validate tcp xml field value with jaxb unmarsalling- Login account screen for local testing- Replace jquery-template with es6 literal template- Convert existing jquery forced async: true method to promise- Convert existing app interface handler functions from callbacks to promises- In charge of loan webview (Hero S) channel- In charge of investment webview (Hero S) channel- In charge of asset analysis report (Hero S#) (investment, banking, insurance, card, loan, pension industry)- Responsible for open banking (remittance, import, import at once) web view channelspring, oracle, tcp, jquery-trmplate, webview Show less

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  Sinwoo gmbh

  Aug 2022 - now

  Developer