Worked on the BoundaryML/baml repository to enhance the reliability and correctness of AWS credential handling for the Bedrock client in EKS environments. Focused on resolving a critical issue with IRSA credential resolution, the developer ensured that the AWS region is properly passed to the DefaultCredentialsChain, enabling the STS AssumeRoleWithWebIdentity workflow to function as intended. This fix addressed runtime credential errors and contributed to more stable and secure cloud integrations. The work was implemented using Rust and leveraged expertise in AWS and cloud computing, demonstrating a methodical approach to improving authentication flows within complex Kubernetes-based cloud infrastructure.