SSE, network security, NGFW, PCNSE, Cylance, LB, PCI-DSS, PoC

He is a Tech Support Engineer and Sales Engineer for network & network security with over 15 years of experience. Currently, he is a Team Leader at XXXX, where he serves as the primary architect for the Japan-market e-commerce infrastructure, overseeing all facets of connectivity, compliance, and security operations from Seoul. He spearheaded the comprehensive overhaul of network systems following the Giosis-to-eBay acquisition, establishing the core Network Service & Security Team. He designed and executed the isolation of payment networks, achieving PCI-DSS and ISO certifications. Notably, he implemented the first-ever case of Payment Network LB Virtualization. Moreover, he architected hybrid-cloud environments using Azure, deploying Vnets, Subnets, and NSGs via Terraform (Infrastructure as Code). He integrated Palo Alto NVAs to manage East-West traffic control between production and development subscriptions. He developed custom Python tools to generate daily firewall policy reports and integrated ELK Watcher with Slack for real-time, severity-based alerting. And he directed the transition to a Zero Trust Office model, replacing legacy SSL VPNs with Global Protect and migrating traditional voice systems to Zoom and Genesys. Before this, he spent several years as a lead engineer for XXXX solutions, mastering deep-packet inspection and advanced network security for major Korean conglomerates. Where he delivered high-fidelity security architectures for Samsung Electronics, Samsung Semiconductor, and Kookmin Bank, establishing a reputation for technical grit in high-density industrial environments. He forged his career in the mid-2000s, mastering Cisco, Juniper, and BGP/ECMP protocols. He was an early adopter of Wireless and VoIP (VoIP/PUIP) solutions during the industry’s first wave of digital communication transformation.

2.       What skill(s) / experience would you self-describe as strongest or specialist in?  

Strongest skills would be Enterprise Network & Security Orchestration, Cloud Architecture and IAC. He is expert in the configuration and optimization of Cisco and Juniper enterprise solutions, specializing in high-availability routing, switching, and complex network protocols (BGP, ECMP). A master of the “Big Three” security ecosystems—Palo Alto, Fortinet, and Cisco Security—deploying advanced firewall policies, URL filtering, and threat detection. And he has experienced in architecting complex Azure environments, including Vnet design, Private DNS, and Load Balancing, ensuring that cloud-native services align with on-premise security standards.

3.       Do you have the lists of key criteria’s according to the clients’ requirements?

He is a Tech Support Engineer and Sales Engineer for network & network security with over 15 years of experience. He is an expert in Next-Generation Firewalls (NGFW), specifically Palo Alto Networks (holding multiple PCNSE certifications) and Cylance (Endpoint Security). At XXXX, he built the Network Service & Security team from scratch, successfully leading projects like LB (Load Balancer) replacement, implementing L7 functionalities, and achieving PCI-DSS and ISO certifications. He has a background in “deep troubleshooting” and technical support, with the ability to create custom L7 application signatures and analyze complex security threats like WildFire. Before his current leadership role, he spent years as a Sales Engineer and Tech Support Engineer, meaning he is comfortable with the “discovery to PoC” lifecycle.