During August 2025, Dimitris Mitropoulos contributed to the Tietew/aws-cdk repository by addressing a reliability issue in the Lambda autoscaling documentation. He identified and fixed an incorrect import in the TypeScript example for scheduled scaling, ensuring that the cron expression used was valid and compatible with AWS Application Auto Scaling. This targeted bug fix improved deployment stability by preventing CloudFormation failures caused by misconfigured cron expressions. Dimitris focused on enhancing documentation accuracy and deployment reliability, leveraging his expertise in AWS CDK, CloudFormation, and TypeScript. His work demonstrated careful attention to detail and a clear understanding of infrastructure-as-code best practices.