Shervin Khosravi developed a preshared keys authentication feature for the openfga/helm-charts repository, focusing on secure configuration management within Kubernetes environments. He replaced hardcoded credentials in values.yaml by enabling the retrieval of preshared keys from Kubernetes secrets, allowing users to specify secret names directly in deployment configurations. Using YAML and Helm, Shervin ensured that authentication modules receive credentials through the standardized OPENFGA_AUTHN_PRESHARED_KEYS environment variable. He also implemented end-to-end tests to validate secret creation, environment variable mounting, and integration with the authentication module. This work improved deployment consistency, security, and maintainability, demonstrating depth in DevOps and Kubernetes best practices.