Senior Network Engineer — Multi-Vendor Backbone & MPLS

Comcast Resume; Mount Laurel Township (NJ); On-site; USD 93,000 - 139,000; Full time

Job summary

Comcast is seeking an experienced Network Engineer 3 to design, implement, troubleshoot, and support large-scale multi-vendor networks in a production environment. Strong routing fundamentals and hands-on troubleshooting are essential.

The role requires authorization to work in the United States and may involve on-site collaboration at our New Jersey facilities, with occasional remote options based on team needs.

Qualifications

• Bachelor’s degree or equivalent practical experience.

Responsibilities

• Support design, implementation, and operation of large-scale network infrastructure.
• Troubleshoot complex routing, connectivity, performance, and configuration issues.
• Configure and support Cisco, Juniper, Nokia, or similar network platforms.
• Perform network changes, upgrades, migrations, and configuration deployments.
• Conduct pre-change and post-change validation and network health checks.
• Review configurations and routing behavior to identify issues and ensure engineering standards are met.
• Support network audits, compliance, capacity, and reliability initiatives.
• Analyze device logs, routing tables, packet flows, and operational data during troubleshooting.
• Participate in incident resolution and root‑cause analysis.
• Collaborate with engineering, operations, vendors, and other technical teams.
• Maintain technical documentation, network standards, and operational procedures.

Skills

TCP/IP basics

IPv4/IPv6

Routing protocols

BGP

IS-IS

OSPF

LDP

RSVP

MPLS

BGP peering

Troubleshooting

Layer 2/3 issues

Cisco/Juniper/Nokia

Analytical skills

Education

Bachelor’s degree in Computer Science, Network Engineering, Telecommunications, or related field

Tools

Cisco

Juniper

Nokia

Wireshark

tcpdump

Telemetry

SNMP

syslog

Job description

Comcast is seeking an experienced Network Engineer 3 to design, implement, troubleshoot, and support large-scale multi-vendor networks in a production environment. Strong routing fundamentals and hands-on troubleshooting are essential.

The role requires authorization to work in the United States and may involve on-site collaboration at our New Jersey facilities, with occasional remote options based on team needs.