Description: Onsite in Washington, DC The Sr. Network Security Engineer will secure and harden mission-critical enterprise networks for our client within a federal environment. The role will design and manage firewalls, VPNs, IDS/IPS, and NAC, enforce segmentation, and support incident response. The engineer will act as a hands-on subject matter expert, communicate risk to diverse stakeholders, and enable secure mission delivery across the organization. This is a full-time, permanent opportu