Network Engineer

Comcast Resume • Mount Laurel, NJ

10d • $92,637 - $138,955

About The Position

Comcast is seeking an experienced Network Engineer 3 to support the design, implementation, troubleshooting, and operational support of large-scale, multi-vendor network environments. The role requires strong IP networking and routing fundamentals, hands-on troubleshooting skills, and experience supporting reliable production networks. The position is not eligible for visa sponsorship; candidates must be legally authorized to work in the United States without current or future sponsorship requirements.

Comcast generally prefers employees to work onsite and collaborate, unless a team has been designated as virtual. For positions listing both office locations and virtual offerings, candidates living more than 100 miles from the office may be considered for the remote option.

The role is based on a 5–7 year relevant work experience profile. A bachelor's degree in a related field or equivalent practical experience is required in the qualifications, though the posting also states that the degree is preferred and applicants with equivalent coursework or extensive related professional experience may be considered. The New Jersey base pay range is $92,636.96–$138,955.44, with the selected candidate's offer dependent on job-related, nondiscriminatory factors. Most non-sales positions are eligible for a bonus, and eligible employees receive benefits; details are available on Comcast's careers site.

Requirements

• Strong understanding of TCP/IP, IPv4/IPv6, subnetting, and packet forwarding.
• Working knowledge of routing protocols including BGP, IS-IS, OSPF, LDP, RSVP, and MPLS.
• Understanding of BGP peering, route selection, attributes, filtering, and routing policies.
• Experience troubleshooting Layer 2 and Layer 3 network issues.
• Experience supporting production network changes and troubleshooting.
• Familiarity with multi-vendor environments such as Cisco, Juniper, and Nokia.
• Strong analytical, troubleshooting, communication, and collaboration skills.
• Bachelor's degree in Computer Science, Network Engineering, Telecommunications, or a related field, or equivalent practical experience.
• 5+ years of experience in network engineering, network operations, or a related infrastructure role.
• Legally authorized to work in the United States without requiring employment visa sponsorship now or in the future.

Nice To Haves

• CCNA, CCNP, JNCIA, Nokia, or equivalent certification.
• Experience with carrier, backbone, service-provider, or large enterprise networks.
• Knowledge of MPLS, IPv6, or similar network technologies.
• Experience with Wireshark, tcpdump, telemetry, SNMP, syslog, or network monitoring platforms.
• Exposure to Python, APIs, network automation, or AI-assisted network operations.

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.

Benefits

• Eligible employees receive benefits; the posting refers candidates to Comcast's careers site for details.
• Most non-sales positions are eligible for a bonus.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level