The Network Security Engineer-II is a key member of the Rackspace Infrastructure team, providing high-level technical expertise for critical networking systems. This role involves taking ownership of complex network issues, ensuring their resolution, and actively monitoring the Rackspace network. The engineer responds to escalated issues from internal and external customers, troubleshooting environments including firewall, VPN, and load balancer configurations. Responsibilities also include providing networking architecture solutions and adhering to security policies, aiming to deliver Fanatical Experiences to customers.