• Developed an AES SDK in two programming languages (Java/TypeScript) and integrated it with HashiCorp Vault to ensure secure handling of sensitive data.• Automated AWS network infrastructure with AWS CDK, TypeScript SDK, and Travis CI.• Migrated the team CI/CD pipeline from Travis CI to AWS CodeBuild and CodeDeploy, as well as GitHub Actions, resulting in a 58% reduction in waiting time.• Reduced AWS VPC costs by 25% through Centralized VPC Endpoint Access with AWS Transit Gateway.• Conducted seven sharing sessions to discuss AWS best practices for IAM Management, AWS Network Optimization, Cost Optimization, and CDK.• Collaborated with colleagues to configure Dockerfiles and resolved network and database issues for migrating an on-premises application to a Kubernetes environment.• Configured Dynatrace components on a Kubernetes cluster and authored comprehensive documentation to guide users on the effective utilization of the system.• Built Helm charts coupled with Argo Rollouts to implement Blue-Green deployment configurations.• Established Argo Workflows and Argo Events in a Kubernetes cluster, integrating with AWS Step Functions to implement workflow orchestration for blending on-premises and Kubernetes environment batch jobs.• Implemented AWS best practices using Trusted Advisor and AWS Config Managed Rules for account scanning.• Designed a new Organizational Unit Structure and Service Control Policy for improved governance.

• Crafted features for “pro.104.com.tw” one of Taiwan's largest job recruitment platforms.• Participated in the reconstruction of PHP web application architecture, transitioning from server-side rendering to client-side rendering.• Built an image converter using AWS Lambda, SQS, and Node.js.• Utilized AWS Step Functions to orchestrate extensive parallel workloads and structured workflows for dependent batch jobs.• Migrated builds from Maven to Gradle for five legacy Java Spring Batch job services.• Conducted code reviews to enhance the team’s code quality.

• Programmed Android applications for in-vehicle infotainment systems, incorporating features like an external media player, DVD functionality, and FM/AM radio.