Senior Network Engineer - Routing & Switching

• Impact: Contributes to the completion of significant project milestones and recommends technical solutions and improvements that affect program results. Work is performed under general direction, with latitude for independent judgment on technical approach.
• Complexity: Resolves complex technical problems requiring in-depth analysis, evaluation of multiple factors, and application of established engineering principles and best practices.
• Communication: Communicates technical information, design recommendations, risks, and status to engineering leadership, peer teams, and stakeholders. Explains complex technical concepts clearly to both technical and non-technical audiences.
• Knowledge: Strong working knowledge of routing and switching principles, theories, and concepts, with demonstrated depth across enterprise network technologies. 
  
  Primary Responsibilities 
  
  Routing and Switching Engineering
• Engineer, configure, and implement enterprise routing and switching infrastructure, including core, distribution, access, and WAN edge layers.
• Design and implement routing policy using BGP, OSPF, EIGRP, and static routing, including route redistribution, filtering, summarization, path selection, and convergence tuning.
• Engineer Layer 2 infrastructure, including VLAN architecture, spanning-tree design, link aggregation, trunking, and loop prevention.
• Implement and maintain VRFs, MPLS/VPN services, tunneling, multicast, QoS policy, and high-availability designs such as HSRP/VRRP and redundant uplink topologies.
• Develop specifications for network architecture, evaluate and recommend new technologies to enhance current capabilities, and perform needs assessments.
• Perform installation, modification, configuration, testing, and servicing of network equipment, including hardware refresh and software/firmware lifecycle upgrades.
• Baseline and optimize network performance — latency, throughput, utilization, convergence, and error rates — and remediate identified deficiencies. 
  
  Implementation and Operations Support
• Develop implementation plans, test and validation steps, rollback procedures, and change documentation for network changes, and execute them during approved change windows.
• Provide senior-level troubleshooting and escalation support for complex routing, switching, transport, and connectivity issues spanning multiple layers and vendors.
• Perform packet-level and protocol-level analysis to isolate faults across the network, systems, and application boundary.
• Support capacity planning, configuration standardization, and compliance of device configurations against approved baselines and hardening requirements.
• Partner with architecture, cybersecurity, operations, and project teams to resolve blockers, manage dependencies, and deliver network changes end-to-end. 
  
  Documentation 
• Develop and maintain engineering and operational documentation, including: 
• Logical and physical network diagrams
• Routing designs, policy standards, and addressing plans
• Device configuration standards and baselines
• Implementation, test, and rollback plans
• Port, protocol, and services requirements
• Troubleshooting guides and standard operating procedures
• As-built and operational handoff documentation 
  
  Key Success Factors:
  
  This role is for an engineer who is genuinely hands-on. The expectation is not oversight of someone else's configuration work but direct ownership of the design, the change, the validation, and the outcome. 
  
  The successful engineer is the person others escalate to — comfortable reading a routing table and a packet capture under time pressure, and equally comfortable writing the implementation plan that keeps the change from becoming an incident. 

Required Skills.

• Bachelor's degree and 8+ years of prior relevant experience, or Master's degree with 6+ years of experience. Specific experience, education, and training may be considered in lieu of a degree. 
• Significant hands-on experience engineering, implementing, and troubleshooting enterprise routing and switching infrastructure at scale. 
• Strong working knowledge of TCP/IP, subnetting, BGP, OSPF, EIGRP, VLANs, spanning tree, link aggregation, VRFs, multicast, QoS, NAT, and high-availability design. 
• Experience with network hardware installation, configuration, software upgrades, and lifecycle replacement.
• Experience developing implementation plans, test procedures, and rollback plans, and executing changes in production environments during maintenance windows.
• Demonstrated troubleshooting ability, including packet capture and protocol analysis, across multi-vendor environments.
• Hands-on experience with one or more of the following: Cisco, Aruba, Palo Alto, Dell, Infoblox, and Brocade.
• Experience documenting network designs and procedures using tools such as Visio, PowerPoint, or similar.
• Strong written and verbal communication skills.
• Current IAT Level II or higher certification, such as Security+ CE.
• Active DoD Secret clearance.