You can add Login with LinkedIn functionality to your app using Node and WorkOS. To do this, you'll need to install the WorkOS Node SDK, set secrets such as API keys and client IDs, configure the LinkedIn connection by creating an OAuth app on LinkedIn's Developer Portal, provide client credentials to WorkOS, configure a redirect URI, and set up the frontend and backend using React and Express respectively. After completing these steps, you can handle the user session, implement logout, add SAML SSO, implement access control, and more. This tutorial provides a step-by-step guide on how to achieve this integration.