During July 2025, Samat developed a hierarchical service-level authentication configuration for the gravity-ui/gateway repository, focusing on enhancing security and flexibility in backend systems. By introducing per-service getAuthHeaders and getAuthArgs with action-level and gateway-level overrides, Samat enabled granular authentication control across both gRPC and REST components. The implementation, delivered in a focused commit, unified authentication logic and reduced the risk of misconfiguration, directly improving maintainability and developer productivity. Working primarily with Node.js, TypeScript, and JavaScript, Samat updated documentation and examples to support adoption. The work demonstrated depth in API gateway design and backend authentication architecture without reported bugs.