Senior Network Security Engineer

Blueface Ltd; West Goshen Township (PA); On-site; USD 117,171 - 175,758; Full time

Job summary

Comcast is seeking an Engineer 4 to accelerate the security posture of its core network platforms. You will own security roadmaps, lead remediation efforts, validate secure releases, and enforce standards across platforms from Cisco to Fortinet.

Collaborate across cybersecurity, architecture, and vendor teams to ensure production readiness and risk reduction. You will drive secure configurations, support audits (PCI, SOC2, NIST), and help define policy checks in network tools while maintaining

Qualifications

• 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, SOC2, 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.

Responsibilities

• 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, SOC2, 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.

Skills

Network Engineering

Security Engineering

Infrastructure Security

Routing & Switching

Vulnerability Remediation

Compliance & Audit

TCP/IP Networking

Vendor Coordination

Education

Bachelor’s Degree in Computer Science or related field

Tools

Cisco

Juniper

Arista

Nokia

F5

Fortinet

Job description

Make your mark at Comcast – a Fortune 30 global media and technology company that creates cutting‑edge products, platforms, and solutions for hundreds of millions of customers worldwide.

Join our award‑winning technology team that turns big ideas into innovative products. We support growth, recognize and reward ideas, and value authenticity in the workplace.

Job Summary

This Engineer 4 position is responsible for executing and advancing the security posture of Comcast’s core network platforms. The role serves as a platform/domain owner and execution lead for assigned network environments, partnering with architecture, engineering, cybersecurity, compliance, operations, and vendor teams to validate secure solutions, support production readiness, reduce risk exposure, and keep network platforms resilient, continuously patchable, and aligned to Comcast cybersecurity standards.

Responsibilities

• 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, SOC2, 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.
• Other duties and responsibilities as assigned.

Minimum Qualifications

• 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, SOC2, 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.

Preferred Qualifications

• 7+ years of experience in network security engineering within large enterprise, telecommunications, ISP, cable, cloud, or service provider environments.
• Experience securing carrier‑grade network infrastructure supporting large‑scale production environments.
• Hands‑on experience with network hardening methodologies aligned to CIS Benchmarks, NIST, CISA guidance, or vendor security best practices.
• Experience with automation and scripting using Python, Ansible, PowerShell, Terraform, or similar tools.
• Experience with network compliance, vulnerability scanning, and reporting platforms.
• Knowledge of Zero Trust, secure‑by‑design principles, privileged access management, and identity‑based network security controls.
• Experience supporting security incident response, forensic investigations, and post‑incident remediation.
• Familiarity with cloud networking and hybrid infrastructure security (AWS, Azure, GCP).
• Industry certifications such as CISSP, CCNP Security, JNCIS/JNCIP, GIAC, Security+.

EEO Statement

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.

Compensation

Pay range (New Jersey): $117,171.70 – $175,757.55. Base pay is one part of the total rewards program offered to eligible employees.