Trend Micro, Senior Engineer, Aug 2022 ~ Now

Managed XDR service maintenance

Python/ AWS RDS, SQS, S3, Lambda, ECS / Azure Functions, Storage account, Service bus 

• Develop and maintain service components.
• Using python framework Flask to develop API.
• Data collection using Azure Sentinel and provide to MSSP and SOC teams for security analysis. 

DevOps

AWS Cloudformation, Terraform, Ansible, Jenkins, github actions, Grafana

• Assisting in expanding new business regions in alignment with the company's strategy.
• Assisting the company in passing ISO audits and PCI/DSS compliance.
  
• Use ring deployment to schedule production releases.
• Optimize CI/CD processes using Jenkins and Ansible. 
• Migrate from Jenkins pipeline to GitHub Actions. 
• Design and optimize AWS/Azure architectures.
  
• Monitoring system using grafana, opsgenie tools

eCloudvalley, Senior Developer, Jul 2017 ~ Jul 2022

AWS usage data service ( Jul 2017 ~  Jul 2022)

Python, .NET, PHP / AWS ECS, RDS, SQS, Lambda, S3

• Designed and built a distributed data processing system for AWS usage data.
• Process 1TB / day data and generate business reports for analysis.
• Designed algorithm for AWS Reserved Instance / SavingsPlan recommendation.
• Working on an integration pipeline with other departments for data exchanged.
• Maintained customer management platform website.

Infrastructure maintenance ( Sep 2020 ~ Jul 2022 )

AWS CDK, Cloudformation

• Development/Staging environment establish and release workflow managed.
• Built verifiable disaster recovery scripts that can flexibly restore data and services in various AWS regions, with RTO within 3 hours and RPO within 6 hours

Other experiences

• Built and designed data lake infrastructure for historic data storage.
  
• Participated in the development of video streaming API.
  
• Ticketing system API optimization, handling the concurrency / retry issues
• Built a customer segmentation model using K-means and Hierarchical clustering.