Christina Chen Email and Phone Number

Working as a Site Reliability Engineer at Commonbank of Australia.Optimize existing pipelines to ensure immutable deployments while adhering to best security and networking practices.Rapidly respond to incidents and implement on-call changes to improve system resilience and uptime.Key contributions:• Delivered prompt, client-focused solutions, consistently exceeding business expectations and earning recognitions from stakeholders.• Developed a centralized Grafana dashboard for migrated projects using Helm charts and CloudWatch exporter to enhance visibility and monitoring capabilities.• Executed comprehensive cost analyses and achieved a cost reduction of $10K through diligent cost optimization initiatives.• Mentoring new engineers.

Working as a Cloud Engineer at CommonBank of Australia.Collaborated closely with designers and stakeholders, engaging in discovery, planning, and design changes for migration initiatives.Build and deploy immutable infrastructure service to migrate legacy applications to public cloud AWS within Agile delivery methodology.Key contributions:• Delivered a project from end-to-end in non-prod environments and drafted runbook for production deployment including all technical details.• Developed a centralized Platform as a Service (PaaS) infrastructure template repository for both Linux and Windows Operating System, optimizing delivery efficiency across different projects.• Authored multiple technical documentation, including infrastructure architecture diagrams, serving as a centralized internal guide for other Engineers.• Enhanced Blueprints with new features and deployed to service catalogue, providing centralized products that benefited various teams across the organization.• Facilitated the onboarding process for CBA new engineers, knowledge sharing sessions and troubleshooting guidance.

Collaborated closely with a Senior DevOps Engineer to assist the developer team in improvingthe software delivery processes, enhancing system reliability and streamlining infrastructure management.Key Contributions:• Provisioned three-tier AWS infrastructure using CloudFormation YAML files. • Configured GitHub Action workflows for automated build, test, and deployment processes to Octopus, with a versioning strategy and deployment to AWS ECS Fargate.• Implemented Lambda-scheduler to optimize application costs in non-production environments by shutting down non-critical applications.• Configured Grafana dashboards for centralized monitoring of service metrics and managed alerting processes for prompt incident response.• Handled change requests to support customer feature requests effectively.• Successfully migrated all .NET application building process from TeamCity to GitHub Actions, leading to a significant reduction in underlying hardware maintenance requirements.

Responsible for the design, build and provision of immutable infrastructure to deliver the projects to AWS cloud environments. She worked with the application team and another junior DevOps engineers to automate the end-to-end deployment process.Key Contributions:• Designed and architected a three-tier infrastructure framework from end-to-end, including web layer, application layer and database layer, following the AWS Well- Architected Framework.• Utilized Terraform for automatic deployment of a front-end static website, provisioning Route53, CloudFront, ACM, and S3, with S3 as an origin to mitigate attacks.• Provisioned a highly scalable and available backend infrastructure using Terraform, including VPC, subnets, ECS, internet gateway, NAT gateway, autoscaling groups, load balancers and security groups.• Modularized Terraform scripts for enhanced reusability within the team.• Configured CI/CD pipelines with Jenkins, ensuring automated build, test and deployment processes adhering to best security practices.• Configured CloudWatch for monitoring and logging metrics and alerting.• Provisioned a centralized Grafana dashboard for improved visibility.• Practiced Agile methodology and sprint planning through Jira.