Network Engineering Specialist

Mbi Llc; Newark, Northern (NJ, KY); Hybrid; USD 140,000 - 190,000; Full time

Job summary

NJ TRANSIT is seeking a senior Network Engineering Specialist to lead architecture, engineering, implementation, modernization, and ops for its enterprise network. You will provide hands-on expertise across WAN/LAN, data centers, wireless, cloud connectivity, and security integration.

The role collaborates with Architecture, Operations, Vendors, and project teams to deliver reliable, secure, and highly available services. Strong Cisco, BGP/OSPF, SD-WAN, and automation experience are required.

Qualifications

• Bachelor's degree in Computer Science, IT, Engineering, Telecommunications, or related field, or equivalent experience.
• 10+ years of enterprise network engineering in large environments.
• Expert level knowledge of enterprise routing and switching.
• Advanced experience with Cisco routers, Catalyst switches, Nexus platforms.
• Advanced knowledge of BGP, OSPF, EIGRP, TCP/IP, VLANs, VRFs, STP, QoS, multicast, VPNs.
• Strong WAN and SD-WAN architecture experience.
• Experience with carrier telecom services and WAN circuit technologies.
• Experience designing highly available and geographically diverse network infrastructure.

Responsibilities

• Design, engineer, implement, configure, troubleshoot, and optimize LAN/WAN infrastructure.
• Design/support Layer 2 and 3 environments using BGP, OSPF, EIGRP, VLANs, VRFs, HSRP, STP, QoS.
• Develop network standards, reference architectures, engineering specifications.
• Perform capacity planning, performance analysis, lifecycle management, modernization.
• Engineer WAN connectivity using Internet, MPLS, EPL/EVPL, dark fiber.
• Troubleshoot WAN performance, latency, loss, jitter, routing, carrier transport.
• Support Cisco data center tech including Nexus, ACI.
• Support data center consolidation, relocation, migration, modernization.
• Engineer high-speed 10G/40G/100G/400G as needed.
• Support optical networking, DWDM, dark fiber, data center interconnects.
• Design/support network segmentation using VLANs, VRFs, ACLs, firewalls, VPNs.
• Participate in Zero Trust, SASE, and modern security architectures.
• Support Azure ExpressRoute and AWS Direct Connect connectivity.
• Troubleshoot routing, connectivity, performance, security between on-prem and cloud.
• Support connectivity for CCTV, building systems, monitoring platforms.
• Utilize SolarWinds, ServiceNow, ThousandEyes, packet analysis, and other tools.
• Maintain accurate network inventory and CMDB.
• Develop automation with Python, Ansible, APIs, Terraform.
• Create HLDs/LLDs/MOPs, test plans, rollback procedures, diagrams, docs.
• Conduct technical design reviews, identify risks and dependencies.

Skills

Enterprise network engineering

Routing & Switching

Cisco networking

WAN/SD-WAN

Network design

Network automation

BGP/OSPF/EIGRP

Education

Bachelor's degree or equivalent

Tools

SolarWinds

ThousandEyes

ServiceNow CMDB

Python

Ansible

Terraform

Azure ExpressRoute

AWS Direct Connect

Job description

• The Network Engineering Specialist is a senior technical position responsible for the architecture, engineering, implementation, modernization, and operational support of NJ TRANSIT’s enterprise network infrastructure.
• The position supports a large, geographically distributed transportation environment consisting of corporate facilities, rail and bus locations, data centers, operational facilities, stations, and other critical infrastructure.
• The engineer will provide hands‑on technical expertise across enterprise routing and switching, WAN and SD‑WAN, data center networking, wireless, Internet and carrier connectivity, network security integration, cloud connectivity, and network monitoring.
• The position will work closely with Network Architecture, Network Engineering, Operations, Telecommunications, Infrastructure, application teams, project management, telecommunications carriers, and technology vendors to deliver reliable, secure, resilient, and highly available network services.

Key Responsibilities:

• Design, engineer, implement, configure, troubleshoot, and optimize enterprise LAN and WAN infrastructure.
• Design and support complex Layer 2 and Layer 3 environments using technologies including BGP, OSPF, EIGRP, VLANs, VRFs, HSRP, STP, QoS, multicast, and router distribution.
• Develop network standards, reference architectures, engineering specifications, and configuration standards.
• Perform capacity planning, performance analysis, lifecycle management, and infrastructure modernization.
• Engineer WAN connectivity utilizing Internet, broadband, Ethernet, MPLS,EPL/EVPL, wavelength services, and dark fiber.
• Troubleshoot complex WAN performance issues including latency, packet loss, jitter, routing, carrier transport, and application performance.
• Support Cisco data center technologies, including Nexus switching and Cisco ACI.
• Support data center consolidation, relocation, migration, and infrastructure modernization initiatives.
• Engineer high-speed 10G, 40G, 100G, and 400G connectivity where required.
• Support optical networking, DWDM, dark fiber, carrier wavelength services, and data center interconnect solutions.
• Design and support network segmentation using VLANs, VRFs, ACLs, firewalls, VPNs, IPSec, and related technologies.
• Participate in the implementation of Zero Trust, SASE, and other modern network security architectures.
• Support technologies including Azure ExpressRoute, AWS Direct Connect, VPN, and cloud-based network services.
• Troubleshoot routing, connectivity, performance, and security issues between on‑premises and cloud environments.
• Support connectivity requirements for operational and infrastructure systems such as CCTV, voice, building systems, monitoring platforms, and other IP‑connected technologies.
• Utilize tools such as SolarWinds, ServiceNow, Thousand Eyes, packet analysis tools, and other network‑management platforms.
• Support accurate network inventory and CMDB information.
• Develop automation using technologies such as Python, Ansible, APIs, and Terraform where appropriate.
• Develop High‑Level Designs (HLDs), Low‑Level Designs (LLDs), Methods of Procedure (MOPs), implementation plans, test plans, rollback procedures, network diagrams, and operational documentation.
• Conduct technical design reviews and identify dependencies, risks, capacity limitations, and implementation concerns.

Required Qualifications:

• Bachelor's degree in Computer Science, Information Technology, Engineering, Telecommunications, or a related discipline, or equivalent professional experience.
• 10+ years of progressively responsible enterprise network engineering experience in large and complex environments.
• Expert‑level knowledge of enterprise routing and switching.
• 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 infrastructure.

Preferred Qualifications:

• CCNP, CCIE, or equivalent advanced networking certification or experience.
• Experience with Cisco SD‑WAN, Cisco ACI, Cisco Catalyst, and Cisco 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.
• Experience with network automation using Python, Ansible, APIs, and/ orTerraform.
• Experience with ServiceNow CMDB, SolarWinds, Thousand Eyes, or similar network‑management and observability platforms.

Fill the skill matrix below:

Skill

Amount

Candidate's No. of years of experience

10+ years of progressively responsible enterprise network engineering experience in large and complex environments.

Required

7

Expert‑level knowledge of enterprise routing and switching.

Required

7

Advanced experience with Cisco routers, Catalyst switches, Nexus platforms, and enterprise network technologies.

Required

7

Advanced knowledge of BGP, OSPF, EIGRP, TCP/IP, VLANs, VRFs, STP, QoS, multicast, VPNs, and route redistribution.

Required

7

Strong experience with enterprise WAN and SD‑WAN architecture and implementation.

Required

7

Experience with carrier telecommunications services and WAN circuit technologies.

Required

7

Experience designing highly available and geographically diverse network infrastructure.

Required

7