resume.log

Woori FIS — Assistant Manager · Cloud Security Engineer Feb 2026 – Oct 2026

Information Security Department

Designed, built, and operated cloud security architecture for affiliates including Woori Bank, Woori Card, and Woori Financial Group, across a hybrid environment of public cloud, private cloud, and on-premises.

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Com2us Platform — Assistant Manager · Cloud Engineer Feb 2023 – Feb 2026

Infrastructure Technology Office, Cloud Division

Main engineer in charge of design, build, operations, and incident response for multi-cloud game service infrastructure across 4 cloud service providers (CSPs): AWS, GCP, Azure, and Tencent.

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C&Thoth — Associate to Assistant Manager · Cloud Engineer (Azure MSP) Aug 2020 – Feb 2023

Cloud Service Team

Main engineer dedicated to game company clients at an Azure managed service provider (MSP), covering design, build, operations, security audits, and deployment automation.

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Kyungmin University, Department of Information and Communication Mar 2015 – Feb 2020

Includes the military service period

Bachelor's degree, Academic Credit Bank System (National Institute for Lifelong Education) Dec 2019 – Aug 2020

Degree conferred in Information and Communication

KG ITBANK: AWS Architecture Design Specialist Training Program Feb 2020 – Jul 2020

6 months, 800 hours. Project: migrating a fictional client to AWS

Military service (Republic of Korea Army, honorably discharged) Dec 2016 – Sep 2018

Sergeant. Signal soldier (switchboard operator)

AWS multi-region Terraform Personal project · released Nov 2026

PF-01 · AWS · IaC

A Terraform module set that builds the same infrastructure in 16 AWS regions from one locals map per region.

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GCP Terraform GKE platform Personal project · released Nov 2026

PF-02 · GCP · IaC

A module set that keeps capacity during GKE node pool upgrades with SURGE, and opens only what a VPN needs through a firewall baseline, all as code.

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Tencent Cloud audit-ready Terraform Personal project · released Nov 2026

PF-03 · Tencent · IaC

Tencent Cloud modules that define CloudAudit tracks per service, so risky changes land in a COS bucket.

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AWS Terragrunt DRY IaC Personal project · released Nov 2026

PF-04 · AWS · Terragrunt

Sixteen Terraform modules behind one root config, with Terragrunt running them in order from their dependency graph.

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Multi-cloud asset and audit automation Personal project · released Nov 2026

PF-05 · Multi-cloud · Python

A Python tool that collects assets, permissions, and audit logs from AWS, GCP, and Tencent Cloud into one schema, and alerts on risky events.

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AetherCrew: a virtual company of 11 AI employees Personal project · released Nov 2026

PF-06 · AI · FastAPI

A hand-built orchestrator that assigns work, picks models, and tracks cost for 11 AI employees in a virtual company. Agent work is simulated and no language model API is called.

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AWS firewall request automation Personal project · released Nov 2026

PF-09 · AWS · Python

A CLI that checks whether a firewall request is already open, previews changes only for what is blocked, and verifies the real traffic.

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Woori Financial Group AWS security architecture Feb 2026 – Oct 2026

Woori FIS · AWS · Security

Moved network separation requirements across multiple AWS accounts into subnet and firewall structure, and standardized security settings as one set of Terraform code.

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Zero-downtime migration from GCP to Tencent Cloud Feb 2023 – Feb 2026

Com2us Platform · Migration

Moved 80 servers and 20 databases of Summoners War: Chronicles from GCP to Tencent Cloud in about one week with no downtime.

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Summoners War: Sky Arena multi-cloud and firewall redesign Feb 2023 – Feb 2026

Com2us Platform · Multi-cloud

A massive game platform across GCP and Tencent Cloud, with 600 servers and 70 databases, a full firewall policy redesign, and patching with no maintenance window.

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MIR4 Global: massive Azure infrastructure and automated DDoS blocking Jul 2021 – Feb 2023

C&Thoth · Azure MSP

Dedicated operation of a global game with 3,500 servers and 650 databases on Azure, plus a pipeline that finds DDoS sources in logs and adds them to an NSG automatically.

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Dragon Sky FinOps: 62% lower infrastructure cost Feb 2023 – Feb 2026

Com2us Platform · FinOps

Linked revenue metrics with infrastructure cost and found unused resources automatically every day with Python, cutting infrastructure cost by up to 62%.

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NCP — Naver Cloud Platform Certified Professional 2021.08.18

Valid

NCA — Naver Cloud Platform Certified Associate 2021.07.07

Valid

Engineer Information Processing (Korean national certification) 2021.06.02

Valid

Microsoft Azure Fundamentals (AZ-900) 2020.10.22

Valid

Linux Master Level 2 2019.10.11

Valid

Network Administrator Level 2 2019.07.09

Valid

HashiCorp Certified: Terraform Associate 2022.12.18

Expired

CKA — Certified Kubernetes Administrator 2022.12.16

Expired

Microsoft Azure Database Administrator Associate 2022.06.09

Expired

Microsoft Azure Solutions Architect Expert 2022.06.08

Expired

Microsoft Azure Administrator Associate 2022.06.07

Expired

AWS Certified Solutions Architect – Professional 2022.05.29

Expired

Microsoft Azure Architect Technologies 2021.07.01

Expired

Microsoft Azure Security Engineer Associate 2021.06.18

Expired

AWS Certified Solutions Architect – Associate 2020.06.23

Expired