Andrew Hay contributed to both the hashicorp/terraform-provider-aws and aquasecurity/trivy repositories, focusing on backend development and cloud infrastructure. He delivered AWS Savings Plans support in Terraform, enabling users to manage Savings Plans as code by implementing new resources, data sources, and improved state handling using Go and Terraform. In aquasecurity/trivy, Andrew expanded Azure ARM Kubernetes cluster compatibility, adapting network profiles, RBAC, and agent pools, while also refactoring detection logic for maintainability. His work emphasized code quality through linting, comprehensive testing, and software refactoring, resulting in maintainable, well-tested features that addressed long-standing automation and security needs in both projects.