Jaewook Park Email & Phone Number

Seoul, Kr

Seoul, Kr

Seoul, South Korea

# Key Projects (Data Center Digitalization, Project Leader)● DCIM (Data Center Infrastructure Management) System for Data Centers - EPMS/BAS and more System Integration, Big Data Analysis, - Infrastructure Data service for Customer, Consultation, and Installation/Operation● Enhanced Network Management System - Automation: Auto Discovery Network Configuration, Related Metric View Design - Big Data Analysis: Easy Data Analysis & Visualization Environment● Big Data Network Packet Analysis Base Customer Service - TCP/IP based Traffic Monitoring, Security(abnormal) Event Detection (Customized) - Sampling Packet → (TCP/IP Header) Big Data Analysis → Visualized App (Customer Service) - Pilot System Self-Development/Demonstration: Sflow Collector + MySQL + Google Chart● Business Portal (Web Service) for Data Center Operation and Customer - DC Work Process Digitalization for Operation/Management/Customer # Role: Data Center Operation Manager● Managed Data Center(5 regions) NW Operation & Management for Multi-tenant DC Service● Managed DC Operation System (NMS, BMS, DCIM, DNS, and Business Portal) (Current Key Role) - Infrastructure Data service: Consulting & Operation Management for customers● Managed CDN Solution Operation & Management (Caching, GLBS, Encoding, etc.)● DC Customer Pre/Post-Sales Tech Support, Customer Tech Consulting/Trouble Shooting● Data Center Digitalization Works - System Integration, Data Analysis, New Service Discovery - Improve the digital experience for operators, sales/business, and customers # Key Achievements:● Designing/building/improving DCIM service for data center infrastructure integration operationnew Infrastructure Data Customer Service● TCP/IP Traffic Analysis Based New DC Service Design/Development● Legacy DC network solution Utilization Upgrade - SDN-based IP Broker, API-based Integration, Automated Batch Script● Various customer-oriented tasks (Tech Support, Troubleshooting..) for multi-tenant DC services

"Made a Commercial Solution with my all skills/exp"# Project: Web Packet/Service Monitoring ( Design/Code/Deploy _ All development areas )● Web Packet Collection and Processing: - Collect packets using PF_RING and assemble (optimized TCP/IP Stack) for parsing HTTP data● Simulated Web Client: - Simulate web client to collect service results, including web status and response time - login attempts on Web pages using a JavaScript simulator (Google V8 engine)# Development Tech:● Linux/C with libraries (libxml, libcurl, pf_ring, Google V8 JavaScript engine, pthread, etc.)● Apache/Tomcat, JSP, HTML5, MySQL for UX design and RDB schema# Key Achievements:● From design to development to deployment, All done by myself - all my skills and experience together for one this solution Note: This Souluton is still being used commercially

"Understood Real Service works on the field and customer requirements"# Role: Software Engineer and Field Application Engineering● Test Application(Cloud gaming) for the mobile network and Analyzed network environment.● Developed Android/WM clients with new features such as WOL, IOMX, i18n, etc.● Technical customer support for Real-time transcoding/game solutions on the cloud.# Key Achievements:● Analyzed service traffic and reported it for various networks. (Korea 3G, WIFI, USA 4G.. ) - Suggested and developed the WOL (Wake-on-Lan) for a cloud gaming service. - Suggested and improved some features for the network service. (MTU, Nagle..

" TCP/IP Specialist with Kernel Side Developments."# Role: Develop TCP/IP Stack for Mirroring Packet (for Mobile Network)● Implemented and optimized TCP/IP Stack for bidirectional packets with RADIUS/DIAMETER.● developed TCP/IP Stack: IP De-fragment/Duplication, TCP Payload Processing, and so on● Driver Patch/Kernel Programming for zero-copy(no kernel to user space copy ) processing.● (DPI) Detected VoIP packets (like Skype) through signature matching and pattern analysis. - Implemented SOAP parser for a specific solution in integrating the DPI system# Key Achievements:● Developed a new enhanced TCP/IP stack for mirroring packets for 3G networks.● Designed and developed a DPI (Deep Packet Inspection) system.

"HW Level Programming and Understanding HW Constraints"# Main Role: Development (Debug/Customizing) of Digital TV (with RT-OS Programming)● Customized DTV software for communication with Set-top Box (which controls DTV).● Ported ‘On Air Download’ (firmware update via DTV air signal)● Analyzed network packets to check DTV control messages● Developed RS232C Debugging Tool (for Windows with MFC)● Implemented and controlled I2C Protocol for DTV# Key Achievement:● Created the first RS232C protocol monitoring tool for DTV - design, and development. - suggest/implement how to debug DTV control messages with packet capturing.

Seoul, South Korea

"First Work with OAM System Programming. Well done. 🙂"# Main Role: Develop Operation & Maintenance Software for Telecom Services● Developed fault and tolerance systems on FT machines using Unix/C● Designed and implemented fail-over systems for non-FT machines using Unix/C● Developed the core of a high-availability system● Implemented 3GPP protocol for wireless signal processing# Key Achievements:● Developed the first fault-tolerance software for the Linux system(workstation level).● Successfully implemented software from 3GPP protocol documents

"Meet Computer, Enjoy it (C prog/University/Linux/Network), Love to learn."#Early Experiences:● First computer experience in 1988, learned GW-Basic/MS-DOS. (developed a typing game)● Began coding with Turbo-C/DB3+ around 1992. (developed a simple simulation game)● Learn many computer techs (PC-Tools, How-to-upgrade PC, and so on ) for playing games.# University:● Developed a PC Messenger: Windows Client (MFC), Linux (PHP), DB (MySQL).● Worked as a Linux System Administrator Teacher at a computer institute# Military Service:● Utilized COBOL for Army accounting management and network(DSU-X25) management.● Joined the development team for the Army Control System.# Done:● First project management and design experience with PC Messenger● Created the first home webpage for the Army Division where I worked