Network Engineer

Job Summary: The Network Engineering Specialist is a senior technical role responsible for the design, implementation, modernization, and operational support of a large-scale, geographically distributed enterprise network infrastructure. This position supports diverse environments including corporate, transportation, data centers, and operational facilities, ensuring secure, reliable, and highly available network services through hands-on expertise in routing, switching, WAN, SD-WAN, data center technologies, cloud connectivity, and network security. Responsibilities: Design, engineer, configure, troubleshoot, and optimize enterprise LAN and WAN infrastructure. Support complex Layer 2 and Layer 3 network environments using BGP, OSPF, EIGRP, VLANs, VRFs, HSRP, STP, QoS, multicast, and route redistribution. Develop network standards, reference architectures, engineering specifications, and configuration standards. Perform capacity planning, performance analysis, lifecycle management, and infrastructure modernization. Engineer WAN connectivity using Internet, broadband, Ethernet, MPLS, EPL/EVPL, wavelength services, and dark fiber. Troubleshoot complex WAN performance issues including latency, packet loss, jitter, routing, and carrier transport. Support Cisco data center technologies such as Nexus switching and Cisco ACI. Assist with data center consolidation, relocation, migration, and modernization efforts. Engineer high-speed connectivity including 10G, 40G, 100G, and 400G links. Support optical networking technologies including DWDM, dark fiber, and data center interconnect solutions. Design and support network segmentation with VLANs, VRFs, ACLs, firewalls, VPNs, and IPSec. Participate in implementing modern network security architectures like Zero Trust and SASE. Support cloud connectivity technologies such as Azure ExpressRoute, AWS Direct Connect, and VPNs. Troubleshoot routing, connectivity, performance, and security issues across on-premises and cloud environments. Support connectivity for operational systems including CCTV, voice, building systems, and monitoring platforms. Utilize network management and monitoring tools like SolarWinds, ServiceNow, ThousandEyes, and packet analyzers. Maintain accurate network inventory and CMDB data. Develop automation using Python, Ansible, APIs, and Terraform where appropriate. Create High-Level Designs, Low-Level Designs, Methods of Procedure, implementation plans, test plans, rollback procedures, network diagrams, and operational documentation. Conduct technical design reviews and assess dependencies, risks, capacity limitations, and implementation concerns. Required Skills & Certifications: Bachelor's degree in Computer Science, Information Technology, Engineering, Telecommunications, or related field, or equivalent experience. 10+ years of progressive enterprise network engineering experience in large, complex environments. Expert-level knowledge of enterprise routing and switching technologies. Advanced experience with Cisco routers, Catalyst switches, Nexus platforms, and enterprise network technologies. Advanced knowledge of BGP, OSPF, EIGRP, TCP/IP, VLANs, VRFs, STP, QoS, multicast, VPNs, and route redistribution. Strong experience with enterprise WAN and SD-WAN architecture and implementation. Experience with carrier telecommunications services and WAN circuit technologies. Experience designing highly available and geographically diverse network infrastructures. Preferred Skills & Certifications: CCNP, CCIE, or equivalent advanced networking certification or experience. Experience with Cisco SD-WAN, Cisco ACI, Catalyst, and Nexus platforms. Experience with optical networking technologies including DWDM, dark fiber, and high-speed data center interconnects. Experience with Azure ExpressRoute and AWS Direct Connect cloud connectivity solutions. Experience with network automation tools such as Python, Ansible, APIs, and Terraform. Experience with network management and observability platforms like ServiceNow CMDB, SolarWinds, and ThousandEyes. Special Considerations: Absences greater than two weeks require prior approval and reachable contact information; failure to return on agreed date may result in dismissal. Must comply with client's policies regarding availability and communication during absence periods. Scheduling: Work schedule and shift pattern to be determined; interviews may include virtual and in-person rounds. #J-18808-Ljbffr vTech Solution