- Provided Tier 2/3 level support, managing incidents, troubleshooting, and ensuring smooth operation ofCDN services such as Cache, Media Streaming, High-speed Data Transmission- Conducted global performance monitoring and optimization using Catchpoint, implementing strategies to enhance service reliability and efficiency.- Managed the image optimization API server and deployed on AWS infrastructure. * Optimized API usage, adjusted autoscaling policies, and fine-tuned… Show more - Provided Tier 2/3 level support, managing incidents, troubleshooting, and ensuring smooth operation ofCDN services such as Cache, Media Streaming, High-speed Data Transmission- Conducted global performance monitoring and optimization using Catchpoint, implementing strategies to enhance service reliability and efficiency.- Managed the image optimization API server and deployed on AWS infrastructure. * Optimized API usage, adjusted autoscaling policies, and fine-tuned library configurations tosignificantly reduce AWS costs by 35%. These measures ensured cost savings while maintainingoptimal performance and reliability. * Created Docker image to deploy the API server more easily using Automated Builds on Dockerhub Show less

- Led both US and EMEA Service Reliability Engineering teams, overseeing their operations and ensuringservice reliability across regions.- Led the PI (Platform Integration) project from 2018 to 2019, achieving successful completion within thedesignated timeframe.- Directed the launch of the next-generation CDN platform, known as CDNPro(Nginx based): * Developed a Python tool to facilitate the conversion of legacy CDNetworks cache configurationsto CDNPro configuration… Show more - Led both US and EMEA Service Reliability Engineering teams, overseeing their operations and ensuringservice reliability across regions.- Led the PI (Platform Integration) project from 2018 to 2019, achieving successful completion within thedesignated timeframe.- Directed the launch of the next-generation CDN platform, known as CDNPro(Nginx based): * Developed a Python tool to facilitate the conversion of legacy CDNetworks cache configurationsto CDNPro configuration, facilitating a seamless transition process. * Provided comprehensive support for the product launch, ensuring minimal disruption to existingservices and a smooth transition for clients.- Established operational procedures and conducted training sessions to effectively onboard team members and stakeholders, ensuring alignment with project objectives and operational standards. Show less

- Established and led the Service Reliability Engineering team at the UK office, including hiring and training team members to ensure operational excellence.- Implemented the Follow-The-Sun (FTS) on-call shift model to provide around-the-clock support for global customers, enhancing efficiency and responsiveness.- Directed the Platform Integration (PI) project following CDNetworks' acquisition by Wangsu Science &Technology (ChinaNetCenter): * Led the migration of CDNetworks… Show more - Established and led the Service Reliability Engineering team at the UK office, including hiring and training team members to ensure operational excellence.- Implemented the Follow-The-Sun (FTS) on-call shift model to provide around-the-clock support for global customers, enhancing efficiency and responsiveness.- Directed the Platform Integration (PI) project following CDNetworks' acquisition by Wangsu Science &Technology (ChinaNetCenter): * Led the migration of CDNetworks platforms to CNC infrastructure, developing automation toolsand establishing streamlined processes. * Conducted training sessions to onboard personnel onto the new platform, ensuring smoothtransitions and minimal disruption to operations.- Global Performance Monitoring and Optimization Show less

- Successfully managed global server load balancing for high-volume traffic exceeding 750Gbps.- Led the migration from legacy GSLB to NGP GSLB and the global ANYCAST network migration.- Spearheaded the launch of Cloud Security 1.0 for DDoS mitigation and Cloud Security 2.0 for WAF.- Improved performance monitoring and optimization for China delivery using tools like Gomez andCatchPoint.- Developed a monitoring and alerting tool for dynamic network acceleration service using… Show more - Successfully managed global server load balancing for high-volume traffic exceeding 750Gbps.- Led the migration from legacy GSLB to NGP GSLB and the global ANYCAST network migration.- Spearheaded the launch of Cloud Security 1.0 for DDoS mitigation and Cloud Security 2.0 for WAF.- Improved performance monitoring and optimization for China delivery using tools like Gomez andCatchPoint.- Developed a monitoring and alerting tool for dynamic network acceleration service using Grafana, and InfluxDB.- Conducted training and knowledge transfer sessions for new employees and overseas branches.- Collaborated closely with HQ engineering, APAC Service Delivery Team, and EMEA Service Delivery Team for seamless operations and coordination. Show less

- Developed a real-time monitoring system for media streaming and download using ASP and MSSQL.- Managed the development of the CDNetworks Customer Portal and the Broad Media (Japan) OperatorPortal- Successfully built and managed various media-based services(WMS and FMS) including: * Large-scale and high-availability live service systems for clients such as Daum, NHN, Yahoo!, YTN,and Korea Blue House. * UCC system development for Daum and NHN. * Video-on-demand… Show more - Developed a real-time monitoring system for media streaming and download using ASP and MSSQL.- Managed the development of the CDNetworks Customer Portal and the Broad Media (Japan) OperatorPortal- Successfully built and managed various media-based services(WMS and FMS) including: * Large-scale and high-availability live service systems for clients such as Daum, NHN, Yahoo!, YTN,and Korea Blue House. * UCC system development for Daum and NHN. * Video-on-demand service management for over 30 customers.- Developed the CDNetworks Operator Portal, an automated backend system.- Implemented a ticketing system with RT (Request Tracker) for the APAC region.- Deployed and managed Panther Cache Server in China and the APAC region.- Conducted TCP optimization and tuning with customized CDNetworks kernel.- Managed the deployment of CDNetworks NGP (Next Generation Platform) worldwide.- Built the Global Data Center (GDC) with CDNetworks NGP for SK Communications.- Provided support for big global customers including Samsung, LG, eBay Korea, Hyundai, and Blizzard Korea.- Focused on troubleshooting technical issues, rolling out new platforms globally, knowledge transfer,training and supporting overseas branches, improving service quality, and enhancing technical environments for system administration and management. Show less

- Developed Media Encoder based on WMS(Windows Media Server)- Developed web based remote surveillance systems - Camera pen/tilt control- Designed and constructed remote surveillance systems

- Built and managed server systems, specializing in Windows Server-based environments.- Provided consulting services on IT infrastructure to optimize system performance and reliability.

- Built the office intranet- Built and managed the company website