• Work as DevOps Engineer and Development Team Manager at KOK KOK Co.,Ltd. and a Member of Group Coordination Center in KOLAO. I designed and implemented AWS Multi Accounts Architect, various Pipelines such as Development, CI/CD, Monitoring, and Data Analysis.

• Work as DevOps Architect. Try to materialize 'Infrastructure as a Code' with Ansible and various Script Language under AWS Cloud Environment• Designed and implemented Java/ .NET CI/CD environments using Git, Nexus, Jenkins, AppVeyor and Docker• Designed and developed various Micro Services with Spring Boot, JPA/Hibernate and Docker under TDD/BDD methodologies• Designed and developed HSM Service to implement DUKPT• Understand 3DS(EMVCo 2.1) Process Flow• Designed and implemented Test Automation using Jenkins / JMeter / Selenium to reduce time/manpower cost• Designed and implemented Java app profiler• Administration of Linux / Windows systems• Designed and implemented Web-vulnerability Test automation using Jenkins / OWASP-ZAP• Using Bash / PowerShell / Python for infrastructure scripting• Managing all projects through daily stand-up meeting and Trello

• ABWS (Audit Breach Warning System)• RRMS (Regulatory Risk Management System)• RAMF (Risk Assessment & Audit Mapping Framework)To develop these systems with Spring 2.5, Flex SDK 3.2 and iBatis based on the environment of Tomcat 6. Those systems are now used by Auditor & Audit Planner.

To develop the KIOSK for Immigration in Incheon International Airport withFlex 4.5 and Spring 3.1 framework.

To develop OneAgent Web Console for NAC (Network Access Controller) withMyBatis, JQuery based on Spring 3.1.

To develop various API servers with Java in order to communicate with MobileApplication Services (E-Book, SNS) with Spring 3.1 framework, myBatis, andJDK 1.7 on Tomcat 7.

To develop WMS (Warehouse Management System with Flex (SDK 3.5),Struts 2 and BlazeDS.

To develop iPhone Application for ERP Program of the company. It was usedby the staff in the company.

• Developed ‘LG U+ LQMS’ software for customer request test. The product is for use the staff in ‘LG U+ LTE Data Quality Management System’ to perform all the team’s operations. Developed new modules of the software using JAVA/JSP and MyBuilder(RIA) on Windows(develop environment)/ Linux(operate environment). Acquired LTE knowledge and used the same in the project.• Developed ‘LG U+ DSC’ software for operator operations. The product is used by the staff in ‘LG U+ Data Service Control’ to perform all the team’s operations. Developed new modules and updates of the software using JAVA/FLEX. Resolved bugs and performed maintenance while implementing new functionality simultaneously. Used tools like eclipse, JDK 6, JDBC, Swing/ AWT, Pure MVC, Blaze DS and SQL for all development and unit testing activities. Performed peer code reviews and unit testing. And acquired CISCO DSC knowledge and used same in the project.• Developed ‘LG U+ DQMS’ software for analyst operations. The product is used by the staff in ‘LG U+ 3G Data Quality Management System’ to perform all the team’s operations. Acquired ‘CDMA2000 EVDO - Revision A’ knowledge and used the same in the project.• Developed ‘KT QookTown’ software for customer request. The product is to provide ‘AR Map Services’ have been developed for iPhone users. Through ‘AR Map Service’ cafes, shops, banks, etc., to provide the information. Developed new modules of the software using Objective-C on Macintosh(OSX 10.6) / iPhone(iOS 4.0). Used tool XCODE.• Developed ‘KT WNTAS’ software for analyst operations. The product is used by staff in ‘KT WCDMA Network Traffic Analysis System’ to perform all the team’s operations. Developed new modules and updates of the software using JAVA/JSP on Windows(develop environment)/Linux(operate environment).• Developed ‘LG U+ WATAS’ software for analyst operations. The product is used by staff in ‘LG U+ WAP 2.0 Transaction Analysis System’ to perform all the team’s operations.

Developed ‘ITPMS’ software for teller operations. The product is used by the tellers in all ‘Seoul Guarantee Insurance’ to perform all the insurance’s operations (for e.g. : work process flow checks etc.). Developed new modules and updates of the software using JAVA/JSP and JavaScript on Windows(develop environment) / IBM AIX(operate environment). Resolved bugs and performed maintenance while implementing new functionality simultaneously. Used tools like eclipse, JDK 5, JDBC, J-Garnet, Shark, ExtJS and SQL for all development. Used ClearCase to maintain development artefacts. Also used internal web based bug tracking, inspection and metrics data collection tools and their automation. Performed peer code reviews and unit testing. Acquired banking domain knowledge and used the same in the project.