Build SRE Team from 0 to 1 - Mentor Backend SRE Tech from 0 to 1 - Allocate project resource - Set Goal of each team of member Infrastructure as code - Implement Terraform, manage AWS, GCP, vSphere - Implement Ansible, manage service, service configuration, Linux permission, Database permission Cloud Architecture - Design AWS Architecture, include IAM, VPC, EKS, RDS, Elasticache, Route53, S3, Cloudfront, ACM ... - Design GCP Architecture, include IAM, Shared VPC, GKE, GCS, GAR ... Refine Release Flow - Write Gitlab migration tools, migrate Gitlab from version 10.x to 16.x - Build requirment CI/CD component service - Integrate Gitlab-Runner to GKE - Integrate Jenkins Agent to GKE and Docker Agent - Design Release flow for multiple environment and programming lanuage - Integrate Vault to Jenkins Pipeline and Service Deployment - Migrate old project to new architecture and deploy flow Automation - Write Automation Utils using Golang Cobra, include DNS Management, Monitoring Management, Ansible Operation, Configuration Management, Kibana Dashbaord, Vault Resource Management, Backup/Restore Utils (Crypt Backup using AES256+GCM and Vault transit) ... Security - Refine VPN architecture - Implement Vault - Design and build Dynamic Database Account/Password Platform , write API base on Golang Gin, integrate Vault, Consul, Superset, Frontend Team's audit system Monitoring - Design monitoring architecture - Prometheus, Alertmanager and Consul as metrics monitoring - Elastalert2 as log monitoring - Gatus as Service Status Monitoring - Opsgenie as Alert Center Hardware - IDC Firewall HA

- Implement Ansible - Implement Terraform // Define Platform Infrastructure - Build Infrastructure on GCP ( Using GKE, HTTP Load Balancing, Compute Instance Group, Pub/Sub, GCS, GCR, Cloud SQL, Memory Cache(Redis) ) - Cloudflare as CDN, DDoS. WAF - Gitlab as version control - Jenkins as CI/CD service - Consul as application environment config - EFK as log system - Implement AWS Workspace ( For Production Security ) - Build Pre-Production Environment on AWS - Reference diagram on GCP: https://drive.google.com/file/d/1pz8zvorbL0BzBxEECXbhzpw5yC2X6wYj/view?usp=sharing - Reference diagram on AWS: https://drive.google.com/file/d/13WwZtI7XTYWM4dr4lPQg19DaVG0SmB7R/view?usp=sharing

// Infrastructure - Improve Ansible (For better Infrastructure as code) - Implement Terraform - Refine platform structure // CI/CD - Upgrade Gitlab version (Write Custom Python Tools from 8.x > 13.x) - Implement Jenkins declarative pipeline - Implement monolithic repository concept // Kubernetes - Implement Kubernetes on bare metal - Migrate application to Kubernetes - Improve CD flow for Kubernetes - Refine monitor system for Kubernetes and other service - Implement log system for Kubernetes - Implement Kustomize and HELM - Guide Backend how to write application suitable for Kubernetes // Design and implement an system for multi-tenant - Write RESTful API for Backend (Base on Golang Gin, MongoDB, ETCd, Consul) - Implement CoreDNS and ETCd (For Internal DNS, Backend application) - Implement Consul cluster and consul-template (For configuration, Monitor, CI/CD) - Reference diagram : https://drive.google.com/file/d/1i9b8PEXBM0HIexR6DgfzniQAeh5MeUQv/view?usp=sharing // Automation - Slackbot for automation (Base on Golang, retired)

- Help 17media Disaster Recovery Project (Mongo Cluster, Backend Application) - Improve Mongo Cluster Structure (For 17media, Ongoing) - Improve Elasticsearch Cluster Structure (For 17media User search and HandsUP Log , Ongoing) - Implement Kustomize(For improve CD flow, Ongoing) - Improve Ansible Structure - Migrate Gitlab runner to Github and CircleCI, Improve HandsUP CI/CD performance

- Implement Configuration Management Tools (Ansible) - Implement CI/CD Flow (Ansible + Gitlab + Jenkins) - Improve Elasticsearch, Logstash, Kafka data flow - Implement Prometheus and Grafana for monitor - Implement Cloud Service Concept - Guide team member for better technology

- Implement Ansible - Implement Jenkins - Increase system structure for better performance - Implement Docker for local develop environment - Write automation tools for local develop environment, ansible, GCP - Increase Zabbix monitor System - Implement Prometheus for monitor - Implement Log System ( Elasticsearch, Kibana, Logstash, Filebeat ) - Planing Data Flow for CommonWealth group (Ongoing case) - Kubernetes for future deploy method (Ongoing case) - Mentor of system admin team and develop team (Ongoing case) - Implement Bitrix24 for our Project management (Ongoing case) - Lead IT Team Migrate service from HiCloud to GCP (Ongoing case)

- Implement Ansible for deploy service package, configuration and operation - Implement Gitlab and Jenkins for CI/CD - Build our service on GCP, with Compute Engine, Cloud Storage, App Engine, HTTP(S) load balancing, Data Flow (Stackdriver Logging And BigQuery), Cloud SQL - Automation tool develop, base on Python and Go, for Ansible, Gitlab, Jenkins configuration, operation, deploy - Web Test, base on Python selenium, for E2E test our Web Site - Zabbix, for monitor service status, performance, and alert - Convert PHP RESTful API to Go, ongoing case, for better performance, micro service, and improve CI/CD flow

- Migration and improving Garena Taiwan core service, for better performance, operation, monitor - AWS management, for game service deploy - Implement Saltstack, for configuration management, deploy, operation - Implement Logstash, Redis, Elasticsearch, Kibana (ELK) for programmer debug and analyze log - Implement Gitlab and Jenkins for CI/CD - Build Icinga, Zabbix, for monitor service status , alert, performance tuning - Write Automation tool to management Saltstack, network security test, API for system management, base on Python Flask