Tom Matthews focused on security hardening for the guardian/janus-app repository, delivering a targeted improvement to credential management. He removed the redundant AWS_SECURITY_TOKEN export, simplifying the application’s environment configuration and reducing the risk of credential leakage. This change aligned the project with AWS best practices and contributed to more reliable deployments and easier ongoing maintenance. Working primarily with Scala and HTML in a back end web development context, Tom’s work demonstrated a clear understanding of secure credential handling. Over the month, he delivered one feature with no reported bugs, reflecting a focused and well-executed engineering effort within a short timeframe.