Embodiments of the present invention provide a system that facilitates session management between a web application and a Customer Relationship Management (CRM) system. During operation, the system receives, at a proxy, a service call intended for a CRM system. Next, the system modifies a header of the service call to include authentication credentials for the CRM system. The system then determines if an available session token for the CRM system exists at the proxy. If so, the system modifies the header of the service call to include the session token. Next, the system forwards the service call with the modified header to the CRM system. The system then receives a response to the service call, which includes the session token. Upon receiving the response, the system stores the session token at the proxy for a subsequent service call. Finally, the system forwards the response to the web application.