This is an opening for an SD-WAN Senior Network Engineer to support the Department of State’s (DoS) Diplomatic Technology Operations Division. This program provides transparent, interconnected systems and security supporting the DoS in successfully carrying out U.S. foreign policy missions worldwide. The Operations Division provides enterprise operations and maintenance support worldwide. SAIC’s program is named "Vanguard" and is an IT consolidation consisting of the Department's data center, cloud, domestic and foreign network switch, routers and WAN devices. Currently, the role is three days onsite and 2 days remote in Springfield, VA or Beltsville, MD. Typically M-F 0830-1700. (Hour's dependent on mission priorities to include potential on-call). Description of Duties: Evaluates, designs, documents, implements, validation testing, and performs problem isolation and resolution, and performance monitoring, tunes, sets standards and maintains a range of network components and systems within the LAN/WAN environments at DoS posts and offices. Performs these functions across using COTS and GOTS tools to test/validate physical media, Operating Systems, TCP protocol stacks, routing protocols, routed protocols and network hardware components primarily on Cisco devices. Provides client consulting, and training on the best practices and use of the DoS networks, tools, and architectures. Uses monitoring, performance analysis systems, network management software, and hardware management software to troubleshoot and isolate problems, gauge WAN and LAN performance and activity. Devises solutions to operational problems within the capacity and operational limitations of installed equipment. Provides internal consulting, technical guidance, information and support to other team within DoS such as: application developers, tools developers, management, and inter-division stake holders.