I'm Tommy, a DevOps engineer. I have worked on building and operating cloud infrastructure, building and operating Kubernetes, and CI/CD and deployment automation.
Experience
-
Integrated MSP environment in the financial sector
Operated Kubernetes, DevOps, and CMP/OSS platforms. Supported the migration of a multi-cloud management platform and operated it; supported the GitLab migration and the transition to standard Helm; operated CI/CD and GitOps environments based on GitLab, ArgoCD, and Argo Rollouts; supported upgrades of open-source projects in the Kubernetes ecosystem.
-
Sales platform build project
Configured step-ca-based automation of private certificate issuance/renewal and its integration with services. Supported API Gateway integration and routing configuration based on Spring Cloud Gateway.
-
Infrastructure build and operations for enterprise application and web UI/UX platforms
Migrated a solution from EC2 → EKS and built an EKS demo environment, converting manual Ant builds to a Jenkins Groovy pipeline in the process. Built an NKS cluster on the NCP public-sector platform, and built an AKS Eclipse-Che environment using Pulumi(TypeScript).
-
Overall responsibility for service infrastructure
Built on-premises Kubernetes. Built a monitoring system based on Prometheus-Thanos and Grafana, built an error tracking system based on Sentry on Kubernetes, and built integrated authentication (OIDC) for ArgoCD and Grafana based on Keycloak.
-
Solution infrastructure
Involved across the solution infrastructure as a whole, and dedicated engineer for 3 solutions. Implemented automation based on AWS Lambda, converted existing resources into Terraform modules, and assisted with infrastructure security improvements related to security audits.
-
Cloud service operations
Handled service operations management and incident response for dedicated client companies, and supported installation of cloud servers and services for new service introductions.
Experience list
- 26.05 ~ 26.10 DevOps Engineer, Freelance Integrated MSP environment in the financial sector
- 26.02 ~ 26.05 TA, Freelance Sales platform build project
- 25.03 ~ 25.11 Cloud Engineer, Freelance Infrastructure build and operations for enterprise application and web UI/UX platforms
- 23.08 ~ 24.08 DevOps Engineer Overall responsibility for service infrastructure
- 21.03 ~ 23.03 DevOps Engineer Solution infrastructure
- 18.11 ~ 21.02 System Engineer Cloud service operations
Related technical posts
- CI/CD and GitOps deployment automation Installing Argo CD on Amazon EKS
- Kubernetes build and operations Setting Up Kubernetes On-Premises (v1.30)
- AWS automation Automating Dump Generation for ECS Fargate Tasks
Skills
Certifications
- Certified Kubernetes Administrator22.11
- AWS SysOps Associate20.02
- 리눅스마스터 2급18.06
- 정보기기운용기능사18.03
- 네트워크관리사 2급18.03
Education and training
- 한성대학교 정보통신공학과11.03 ~ 17.02
- 기업연계형 장기현장실습 인턴16.07 ~ 16.12
- 클라우드 컴퓨팅 기술인재 양성과정18.07 ~ 18.08