JIWONGOH

Welcome to virbr0.net!

Hi! I’m JIWON GOH, a network engineer.

I have been working on internet telephone exchange operation / call center operation and consulting / server, network design and operation.

Blog(Korean) - blog.virbr0.net

LinkedIn - www.linkedin.com/in/jiwon-goh-03955323

Experience

Samsung SDS

Telephone exchange operation • 2011/01 ~ 2022/12

As a VoIP engineer, I reliably operated a carrier-grade VoIP switching system serving over 600,000 subscribers, along with its associated infrastructure.
My responsibilities included establishing operational procedures, improving network architecture, troubleshooting and enabling new services through subscriber switch upgrades. At times, I used Python to automate tasks such as provisioning large volumes of user information via API calls using the requests module, or managing servers with SSH access through automation using the paramiko module.

VDI Portal operation • 2023/01 ~

I have operated the VDI access portal for Samsung, as well as the administrative console for system administrators.

Projects

2014/04_Recovery from the fire damage at the Samsung SDS Gwacheon Data Center

News Link : Data Center Fire Leads to Outage for Samsung Devices

Due to the fire, all equipment was damaged, and operations were shifted to the cold site for disaster recovery.
The recovery process involved server provisioning, operating system installation, application deployment, and database restoration.

2015/10_Expansion contact center agent capacity for S Comapny North America branch

I managed the SIP call server and the session border controller (SBC), and was involved in network architecture design.

2021/02_Implementing international call id for VoIP calls from foreign IPs to mitigate vishing scams

Related government press releases(Korean)

By utilizing Radware’s ADC AppShape functionality for SIP and Oracle SBC’s HMR (Header Manipulation Rule) feature, we were able to real-time insert an international call indicator into the caller ID for calls originating from overseas IPs to domestic destinations.

2021/10_SIP Call Server Virtualization Migration

Migrated the BroadWorks platform from legacy bare-metal servers to a virtualized server environment.

2022/12_Migration from Cisco GSS to AWS Route 53

The Cisco GSS, which was used for traffic distribution, reached end-of-life and its functionality was successfully migrated to AWS Route 53.

2023/04_Deploy the VDI web portal to support S Company remote work infrastructure

Deploy a portal accessible worldwide useing CDN and AWS multi-region deployment. Using AWS Route 53 geoproximity routing.(GSLB)

2024/10_Automated processing and upload of PII data using Powershell

At the request of a client, I developed a PowerShell script that samples data from a SQL Server database table, converts it to Apache Parquet format, and uploads it to Amazon S3.

Certifications

AWS Certified Developer - Associate (Expiration Date: 2025/07)

Redhat Certified Engineer - Red Hat Enterprise Linux 7

Oracle Certified Professional, Oracle Solaris 10 System Administrator

Oracle Certified Professional, Oracle Solaris 11 System Administrator

Engineer Information Processing (정보처리기사)

Engineer Information Communication (정보통신기사)

Engineer information security (정보보안기사)

AWS Certified Solutions Architect - Associate (Expired)

Cisco Certified Network Professional (Expired)

For more details about my certifications, please refer to my LinkedIn profile below. Linkedin Certifications

Education

KwangWoon University

Bachelor’s degree in Computer Software • 2004 - 2011

Papers : Recommendation of TV Program Based on Personalized Websurfing Information (2010.11) Link