Worked on the opentofu/terraform-provider-vault repository, focusing on migrating AWS access credentials and authentication to AWS SDK v2 using Go and Terraform. The migration improved performance and maintainability for users integrating Vault-backed AWS resources. Addressed test stability by adding timeout contexts, refining error handling with named constants and error wrapping, and correcting CI configurations to ensure reliable builds. Enhanced documentation and changelogs to clarify region handling and configuration details. Maintained code quality by tidying Go modules, removing unused dependencies, and introducing new AWS configuration helpers. The work emphasized backend development best practices and robust integration with AWS infrastructure.