Network Engineer

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

Make your mark at Comcast – a Fortune 30 global media and technology company. From the connectivity and platforms we provide, to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Become part of our award-winning technology team that turns big ideas into cutting-edge products, platforms, and solutions that our customers love. We create space to innovate, and we recognize, reward, and invest in your ideas, while ensuring you can proudly bring your authentic self to the workplace. Join us. You’ll do the best work of your career right here at Comcast. (In most cases, Comcast prefers to have employees on-site collaborating unless the team has been designated as virtual due to the nature of their work. If a position is listed with both office locations and virtual offerings, Comcast may be willing to consider candidates who live greater than 100 miles from the office for the remote option.)

Job Summary

We are seeking an experienced Network Engineer 3 to support the design, implementation, troubleshooting, and operational support of large-scale, multi-vendor network environments. The ideal candidate has strong IP networking and routing fundamentals, hands‑on troubleshooting skills, and experience supporting reliable production networks.

Job Description

_Thispositionis ineligible for visa sponsorship. To beconsidered for thisrole, you must belegally authorized to work in theUnited States andnot requiresponsorship for employment now or inthe future. _

Key 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.

Required Qualifications

• 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 related field, or equivalent practical experience.
• 5+ years of experience in network engineering, network operations, or a related infrastructure role.

Preferred Qualifications

• 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 is a plus, but not required.

Disclaimer:

This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications.

Skills

Network Engineering, Routing Protocols, Troubleshooting, Vendor Relationship Management

Compensation

New Jersey Pay Range: $92,636.96 - $138,955.44

Comcast intends to offer the selected candidate base pay within this range, dependent on job‑related, non‑discriminatory factors such as experience. The application window is 30 days from the date job is posted, unless the number of applicants requires it to close sooner or later.

Base pay is one part of the Total Rewards that Comcast provides to compensate and recognize employees for their work. Most sales positions are eligible for a Commission under the terms of an applicable plan, while most non‑sales positions are eligible for a Bonus. Additionally, Comcast provides best‑in‑class Benefits to eligible employees. We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That’s why we provide an array of options, expert guidance and always‑on tools, that are personalized to meet the needs of your reality – to help support you physically, financially and emotionally through the big milestones and in your everyday life. Please visit the compensation and benefits summary on our careers site for more details.

Education

Bachelor’s Degree

While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.

Certifications (if applicable)

Relevant Work Experience

5-7 Years

Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.