Jekyll 2026-06-05T02:24:17+00:00 https://geraldtui.com/ Write an awesome description for your new site here. You can edit this line in _config.yml. It will appear in your document head meta (for Google search results) and in your feed.xml site description. 2024-08-15T00:00:00+00:00 2024-08-15T00:00:00+00:00 https://geraldtui.com/projects/multi-region-eks-platform <p>Engineered and managed the deployment of a highly available, multi-region Amazon EKS platform supporting thousands of critical internal services across Workday engineering. The platform was built for resilience, security, and scale, giving teams a dependable foundation for their workloads.</p> <p>Highlights:</p> <ul> <li>Achieved 99.99% uptime across a multi-region active-active architecture.</li> <li>Reduced operational overhead by 50% through infrastructure optimization.</li> <li>Hardened security and scalability for thousands of business-critical services.</li> </ul>

Engineered and managed the deployment of a highly available, multi-region Amazon EKS platform supporting thousands of critical internal services across Workday engineering. The platform was built for resilience, security, and scale, giving teams a dependable foundation for their workloads.

2024-04-22T00:00:00+00:00 2024-04-22T00:00:00+00:00 https://geraldtui.com/projects/kubernetes-platform-tooling <p>Built tooling and automation that sat on top of Workday’s largest Kubernetes platform, giving engineering teams self-service access to the capabilities they needed without deep infrastructure knowledge. The work reduced support load and accelerated delivery.</p> <p>Highlights:</p> <ul> <li>Created self-service tooling for thousands of internal services.</li> <li>Reduced manual platform support requests through automation.</li> <li>Packaged repeatable deployments with Helm for consistency.</li> </ul>

Built tooling and automation that sat on top of Workday’s largest Kubernetes platform, giving engineering teams self-service access to the capabilities they needed without deep infrastructure knowledge. The work reduced support load and accelerated delivery.

2024-02-28T00:00:00+00:00 2024-02-28T00:00:00+00:00 https://geraldtui.com/projects/scrum-master-product-ownership <p>Served as Scrum Master and Technical Product Owner for a platform engineering team, owning the cadence of delivery and keeping work aligned to business priorities. The role combined hands-on technical leadership with disciplined agile project management.</p> <p>Highlights:</p> <ul> <li>Led strategic sprint planning and prioritized team deliverables.</li> <li>Managed project execution end-to-end as Technical Product Owner.</li> <li>Kept engineering effort aligned to the highest-value outcomes.</li> </ul>

Served as Scrum Master and Technical Product Owner for a platform engineering team, owning the cadence of delivery and keeping work aligned to business priorities. The role combined hands-on technical leadership with disciplined agile project management.

2024-01-16T00:00:00+00:00 2024-01-16T00:00:00+00:00 https://geraldtui.com/projects/cicd-pipeline-delivery <p>Architected and delivered robust, production-grade CI/CD pipelines that automated the path from code to production. The pipelines accelerated delivery and gave engineering teams a faster, more reliable release process.</p> <p>Highlights:</p> <ul> <li>Accelerated service delivery by 60%.</li> <li>Improved overall team velocity by 50%.</li> <li>Standardized governed, repeatable deployments across the platform.</li> </ul>

Architected and delivered robust, production-grade CI/CD pipelines that automated the path from code to production. The pipelines accelerated delivery and gave engineering teams a faster, more reliable release process.

2023-10-30T00:00:00+00:00 2023-10-30T00:00:00+00:00 https://geraldtui.com/projects/infrastructure-as-code-terraform <p>Established Infrastructure-as-Code (IaC) as a core tenet of platform deployment using Terraform and Terragrunt. Codifying the platform end-to-end made deployments fast, repeatable, and auditable, and removed slow manual configuration steps.</p> <p>Highlights:</p> <ul> <li>Cut infrastructure deployment time from hours to minutes.</li> <li>Increased engineering velocity through repeatable, version-controlled infrastructure.</li> <li>Standardized environments with reusable Terraform/Terragrunt modules.</li> </ul>

Established Infrastructure-as-Code (IaC) as a core tenet of platform deployment using Terraform and Terragrunt. Codifying the platform end-to-end made deployments fast, repeatable, and auditable, and removed slow manual configuration steps.

2022-11-18T00:00:00+00:00 2022-11-18T00:00:00+00:00 https://geraldtui.com/projects/api-test-automation-framework <p>Implemented a new automation framework for API testing using Python with Cucumber/Gherkin behaviour-driven tests. The framework raised the quality bar for platform releases and freed engineers from slow, manual regression cycles.</p> <p>Highlights:</p> <ul> <li>Reduced regression testing time by 70%.</li> <li>Established a higher, repeatable quality standard for releases.</li> <li>Introduced behaviour-driven testing that doubled as living documentation.</li> </ul>

Implemented a new automation framework for API testing using Python with Cucumber/Gherkin behaviour-driven tests. The framework raised the quality bar for platform releases and freed engineers from slow, manual regression cycles.

2022-09-05T00:00:00+00:00 2022-09-05T00:00:00+00:00 https://geraldtui.com/projects/platform-ui-modernization <p>Modernized the user interface of Workday’s tenant management platform using PrimeReact, making the platform easier to navigate and consume. The redesign focused on usability and service consumption for the engineers and customers who rely on it daily.</p> <p>Highlights:</p> <ul> <li>Delivered a major usability upgrade for over 100 customers.</li> <li>Rebuilt the interface on a modern React component framework (PrimeReact).</li> <li>Improved adoption by making complex operations simpler to perform.</li> </ul>

Modernized the user interface of Workday’s tenant management platform using PrimeReact, making the platform easier to navigate and consume. The redesign focused on usability and service consumption for the engineers and customers who rely on it daily.

2022-06-12T00:00:00+00:00 2022-06-12T00:00:00+00:00 https://geraldtui.com/projects/tenant-lifecycle-platform <p>Developed and maintained a critical, end-to-end platform enabling tenant lifecycle management for Workday customers. The focus was large-scale automation, service reliability, and streamlining the operational configuration processes that customer environments depend on.</p> <p>Highlights:</p> <ul> <li>Automated tenant provisioning and configuration at enterprise scale.</li> <li>Improved service reliability for customer-facing environments.</li> <li>Streamlined operational processes that previously required manual effort.</li> </ul>

Developed and maintained a critical, end-to-end platform enabling tenant lifecycle management for Workday customers. The focus was large-scale automation, service reliability, and streamlining the operational configuration processes that customer environments depend on.

2020-05-19T00:00:00+00:00 2020-05-19T00:00:00+00:00 https://geraldtui.com/projects/five-year-it-business-policy <p>Developed and successfully delivered a comprehensive five-year IT Business Policy that set the strategic direction for the organization’s technology. The policy gave stakeholders a clear, long-term roadmap and governance framework.</p> <p>Highlights:</p> <ul> <li>Defined strategy across performance, security, disaster recovery, usage, and scalability.</li> <li>Aligned IT initiatives with the priorities of business stakeholders.</li> <li>Established governance to guide investment and risk decisions for five years.</li> </ul>

Developed and successfully delivered a comprehensive five-year IT Business Policy that set the strategic direction for the organization’s technology. The policy gave stakeholders a clear, long-term roadmap and governance framework.

2020-03-23T00:00:00+00:00 2020-03-23T00:00:00+00:00 https://geraldtui.com/projects/covid-business-continuity <p>When the COVID-19 pandemic hit, I implemented the organization’s critical business continuity plan within 24 hours, enabling the entire workforce to keep operating remotely without interruption. It was a high-pressure test of leadership, coordination, and communication across the whole business.</p> <p>Highlights:</p> <ul> <li>Transitioned 200+ employees to full remote operations within 24 hours.</li> <li>Kept a global ERP software business fully operational through disruption.</li> <li>Coordinated and communicated effectively across the entire organization.</li> </ul>

When the COVID-19 pandemic hit, I implemented the organization’s critical business continuity plan within 24 hours, enabling the entire workforce to keep operating remotely without interruption. It was a high-pressure test of leadership, coordination, and communication across the whole business.