Senior Network Security Engineer

Jobtailor

New Jersey

On-site

USD 120,000 - 170,000

Full time

14 days+

Get more replies from employers

Send a job-specific resume in minutes.

Job summary

Comcast is seeking a Network Security Engineer to own the security posture across multiple platforms such as Cisco, Juniper, Arista, Nokia, F5, Fortinet. You will lead remediation, patch validation, and secure configuration rollout to ensure continuous compliance and secure operations.

You will validate secure releases, coordinate PCI-DSS, SOC 2, and NIST audit activities, and collaborate with architecture, network engineering, and vendor teams to harden configurations and improve monitoring and

Qualifications

Bachelor's Degree or equivalent education/experience.
5+ years in Network Engineering/Security.
3+ years securing enterprise/service provider networks.
Experience with Cisco, Juniper, Arista, Nokia, F5, Fortinet or equivalent tech.
Hands-on routing and switching; vulnerability remediation and risk mitigation.
Strong fundamentals: TCP/IP, DNS, DHCP, BGP, OSPF, MPLS; and security controls.

Responsibilities

Own security posture and execution roadmap for network domains and platforms.
Lead vulnerability remediation, risk mitigation, and patch validation.
Validate secure software releases and changes in lab environments.
Enforce secure configuration rollout across platforms and enable audit readiness.
Coordinate evidence collection for PCI-DSS, SOC 2, NIST and related audits.
Collaborate with security, architecture, network engineering and vendor teams.
Develop and publish network security standards and hardening guidance.

Skills

Network Security Engineering

Vulnerability Remediation

Compliance Support (PCI-DSS, SOC 2)

Routing Technologies

Switching Technologies

Education

Bachelor's degree in Computer Science, Information Technology, Cybersecurity, Network Engineering

Tools

AAA

TACACS+

RADIUS

PKI/Certificates

IDS/IPS

Firewalls

VPNs

Network Monitoring Tools

Job description

Own the security posture and execution roadmap for Comcast network domains and platforms such as Cisco, Juniper, Arista, Nokia, F5, Fortinet etc.
Lead vulnerability remediation, risk mitigation, and patch validation activities for critical vulnerabilities, and vendor security advisories.
Validate secure software releases, compensating controls, and configuration changes in lab environments before production implementation, including security review, bug scrub, test case validation, and certification support.
Drive secure configuration rollout and compliance enforcement across supported platforms using approved network security standards, audit tooling, ticketing workflows, and remediation tracking.
Support audit readiness and closure for PCI, CGA, SOC 2, and internal compliance reviews by validating controls, documenting remediation plans, and coordinating evidence collection.
Configure, test, and operationalize new network security solutions and services, including secure authentication & authorization, certificate-based access, secure monitoring, secure logging, and access restrictions.
Develop, review, and publish network security and resiliency standards that align with Comcast Cybersecurity Policy, CISA hardening guidance, regulatory expectations, and secure-by-design principles.
Maintain continuous compliance by monitoring secure controls, reviewing audit results, validating configuration drift, coordinating remediation with platform teams, and helping define policy checks in network audit and compliance tools.
Review network functions, features, software, hardware, and engineering designs to identify security risks, required mitigations, operational impacts, and production readiness requirements.
Perform security assessments of network platforms and services to identify threats, vulnerabilities, exposed services, insecure protocols, weak authentication methods, access control gaps, and hardening opportunities.
Partner with cross functional organizations/teams such as cybersecurity, architecture, network engineering, operations, and vendor teams to implement least-privilege access, improve auditability, and detect unauthorized or anomalous network changes.
Engage vendors to resolve product security issues, validate hardened releases, influence secure-by-default capabilities, and ensure vendor solutions align with Comcast network security requirements.
Assist with disaster recovery, technical continuity, incident response preparation, and after-action reviews for network security events, production exposures, and audit findings.
Improve team execution by documenting standards, test results, remediation playbooks, operational handoffs, technical decisions, and lessons learned.
Track execution progress, risks, blockers, and metrics across remediation initiatives, ensuring work is visible, measurable, and traceable through approved systems of record.

Requirements

Bachelor's Degree in Computer Science, Information Technology, Cybersecurity, Network Engineering, or a related field; or equivalent combination of education and experience.
5+ years of experience in Network Engineering, Network Security Engineering, Infrastructure Security, or related technical disciplines.
3+ years of hands-on experience securing and supporting enterprise or service provider network environments.
Experience with network platforms and technologies including Cisco, Juniper, Arista, Nokia, F5, Fortinet, or equivalent networking technologies.
Hands-on experience with routing and switching technologies.
Experience performing network vulnerability remediation, security patch validation, configuration hardening, and risk mitigation activities.
Strong understanding of networking fundamentals including routing, switching, TCP/IP, DNS, DHCP, BGP, OSPF, MPLS, and network segmentation.
Knowledge of network security technologies including AAA, TACACS+, RADIUS, PKI/certificates, access control, IDS/IPS, firewalls, VPNs, and secure management protocols.
Experience supporting compliance and audit activities associated with PCI-DSS, SOC 2, NIST, CIS Controls, or similar security frameworks.
Experience analyzing vendor security advisories, CVEs, software vulnerabilities, and remediation strategies.
Familiarity with network monitoring, logging, configuration management, and compliance validation tools.
Experience working within change management, incident management, and operational support processes.
Strong troubleshooting, documentation, communication, and cross-functional collaboration skills.

Core Competencies

Demonstrates expertise in network security engineering, including vulnerability remediation, compliance support, and secure configuration management across various network platforms. Proficient in implementing security standards and conducting risk assessments to ensure continuous compliance and operational readiness.

Highest-signal resume keywords