About

Experienced Architect, Infra Engineer and Consultant in different industries. Key skills include : Cloud(AWS GCP), Container Orchestration(k8s  ECS) and CI/CD(Jenkins). As a consultant, I had experience with business requirements analysis, system operating design, migration planning.

 Carreer Overview

Work Experience

👕 Apparel Manufacturer and Retailer Company- Store planning system — Architect

 January 2020 ～ Present

  • Architected store planning system on AWS. 
  • Designed and planned global expansion.
  • Designed and developed  microservice infrastructure using ECS.
  • Had the experience of business requirements analysis, system operational design and migration planning.
  • Implemented and managed CI/CD pipeline and methodologies with Terraform and Jenkins.

[Keywords]

  • AWS (ECS   Aurora    ElasticCache)
  • Terraform   Docker   Docker Compose
  • Go lang    PostgreSQL   Redis    Node.js   React
  • Fluentd   Prometheus  Grafana

⛅ Apparel Manufacturer and Retailer Company- GCP consulting — Project manager

December 2019 ～ Present

  • Designed GCP security policy for multiple projects.
  • Designed and developed GCP network and GKE.
  • Had the experience of team management of 5 people.
  • Had the experience in proposal activities and contract management.

[Keywords]

  • GCP (Network(Shared VPC)  GKE  Security Command Center)

🔋 Energy Company - IoT system — Infrastructure Leader

December 2019 ～ January 2020

  • Architected infrastructure for IoT system on AWS
  • Designed mobile device management

[Keywords]

  • AWS (ECS   Fargate   Kinesis)
  • Terraform   Docker 

🛒 Apparel Manufacturer and Retailer Company- Inventory management system — Architect

July 2018 ～ December 2019

  • Architected infrastructure for high-transaction system on AWS using database-sharding (Aurora) and a message queue (Kafka)
  • Designed and developed  microservice infrastructure using ECS.
  • Had the experience of business requirements analysis, system operational design and migration planning.
  • Good communication, interpersonal and presentation skills in English.
  • Implemented and managed CI/CD pipeline and methodologies on AWS(ECS)

[Keywords]

  • AWS (ECS   Aurora   MSK   ElasticCache   DynamoDB)
  • Terraform   Docker   Docker Compose
  • Spring Boot   Kafka  PostgreSQL   Redis    Node.js   React
  • Jenkins

🖥 Apparel Manufacturer and Retailer Company- Work-style reform system — Infrastructure Leader

February 2018 ～ July 2018

  • Led team for transforming from custom AWS EC2 architecture to Kubernetes on GCP.
  • Designed and developed multiple GKE clusters located in different regions with Cloud Load Balancer.
  • Designed and developed a log analytics system using Stackdriver, BigQuery and Data Studio.
  • Implemented and managed CI/CD pipeline and methodologies on GCP (GKE)

[Keywords]

  • GCP (GKE   Load Balancing   Pub/Sub   Cloud SQL   Datastore    Cloud Functions GCS   Shared VPC   Cloud Build   Stackdriver   BigQuery   Data Studio)
  • Terraform   Docker   Docker Compose
  • Golang    Node.js   MongoDB   Elasticsearch   PostgreSQL
  • Jenkins

🏢 Trading Company - System renewal — Infrastructure Engineer

May 2017 ～ February 2018

  • Introduced Ansible to the team for managing infrastructure with new policies and procedures (a shift towards DevOps culture).
  • Designed and configured network infrastructure.

[Keywords]

  • Ansible   Jenkins
  • Fortigate   F5   Catalyst    Wireshark
  • Zabbix

⛅ Retail (Convenience stores) - Cloud development environment — Infrastructure Member

March 2016 ～ May 2017

  • Defined the policies and procedures for managing AWS environment used by multiple vendors
  • Managed  Redmine, GitLab, Subversion and Jenkins.

[Keywords]

  • AWS
  • CloudFormation
  • Redmine   GitLab   Subversion   Jenkins

🐘 Retail (Convenience stores) - Data warehouse — Infrastructure Member

December 2015 ～ March 2016

  • Planned and performed performance tuning (Hadoop and  MySQL)

[Keywords]

  • AWS  (EMR)
  • Hadoop

🏪 Retail (Convenience stores) - Point management solution— Infrastructure Member

July 2015 ～ December 2015

  • Planned and performed performance tuning (Tomcat and MySQL).
  • Designed and developed Java application features and improvements.

[Keywords]

  • AWS
  • Tomcat    MySQL   Java

Other Activities

  • Provided Cloud Native technologies training to employees.
  • Provided Networking(L2-L4) training to employees.
  • Implemented and managed Honeypot for security analysis.

[Keywords]

  • Kubernetes   Docker   GCP   AWS
  • TCP/IP   
  • Honeypot