Worked on the browserless/browserless repository to deliver profile support within SystemQueryParameters for SDK routes, enabling authenticated profiles to be injected into the browser environment at launch. This feature maintained session state across interactions, allowing for profile-scoped data access and improved session continuity in SDK-driven workflows. The implementation involved extending the SystemQueryParameters interface with an optional profile parameter, leveraging TypeScript for type safety and full stack development practices to ensure seamless integration. By focusing on authenticated profile injection and session management, the work addressed personalization and security requirements, enhancing the flexibility and robustness of browserless SDK route handling in TypeScript environments.