Network Engineer
Comcast • Mount Laurel, NJ2d
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Network Engineer
Comcast•Mount Laurel, NJ
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. This position is ineligible for visa sponsorship; candidates must be legally authorized to work in the United States without requiring sponsorship now or in the future. The position supports large-scale network infrastructure through network changes, upgrades, migrations, configuration deployments, health checks, audits, capacity and reliability initiatives, incident resolution, and root-cause analysis. The engineer works with engineering, operations, vendors, and other technical teams and maintains technical documentation, network standards, and operational procedures. Comcast generally prefers onsite collaboration unless a team is designated as virtual; the posting does not specify the work arrangement for this role.
Requirements
- Strong understanding of TCP/IP, IPv4/IPv6, subnetting, and packet forwarding.
- Working knowledge of BGP, IS-IS, OSPF, LDP, RSVP, and MPLS routing protocols.
- 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.
- Must be legally authorized to work in the United States and not require 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 the 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 a range of benefits intended to support physical, financial, and emotional well-being.
- Most non-sales positions are eligible for a bonus.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
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