Senior Network Security Engineer

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The Global Network & Technology - Network Security team is seeking a highly motivated and experienced Cybersecurity Engineer to join the Network Security Defense team. The Defense team is responsible for owning the security lifecycle and effectiveness across the Core, Edge, and Access networks.

In this role, you will be critical in advancing the security posture of our Radio Access Network, which includes non-terrestrial and in-building networks. Deep technical knowledge across these networks is key for success. Through real-time threat monitoring & detection using SIEM tools like Splunk, leading Incident Response efforts during a breach, and managing the continuous Vulnerability Management lifecycle across networks and applications.

The position also requires expertise in defining and implementing robust Security Architecture, including firewalls, encryption, centralized Identity and Access Management, and Multi-Factor Authentication (MFA). A strong candidate will also possess advanced threat hunting skills, including advanced networking & protocol analysis, endpoint & memory forensics, data Science & querying, and demonstrable experience in automation & scripting to enhance our cybersecurity tooling.

Key Responsibilities:

• Identify technology gaps to lead in the design, architecture, and implementation of appropriate security solutions.

• Partner across the Operations, Engineering, and Planning organizations to ensure secure design patterns are embedded into new deployments and major changes

• Work independently on multiple technical initiatives

• Communicate clearly and effectively, articulating complex technical concepts to diverse internal and external audiences.

• Serve as escalation support for security-related investigations, providing expert-level analysis and guidance during active incidents

• Act as the security lead in network design reviews, ensuring that the Network assets meet stringent carrier-grade security standards.

• Execute root cause analysis and produce clear incident reports outlining timeline, impact, evidence, and remediation recommendations

• Conduct proactive threat hunting across the identity, endpoint, and network telemetry to uncover adversary behavior and reduce dwell time

• Create and tune threat detections using SIEM (Security Information and Event Management) to improve alert fidelity and reduce false positives

• Drive continuous improvement of network visibility and telemetry collection to strengthen detection and response capabilities

• Perform regular security control assessments, validating configuration effectiveness and closing gaps discovered during incidents or hunts

Where you'll be working...

In this hybrid role, you'll have a defined work location that includes work from home and assigned office days in one of the offices listed for this position. In order to be eligible to apply for this position, you must be within commuting distance of one of those locations.

What we're looking for...

You must have...

• Requires a Bachelor's degree in Computer Science, Cybersecurity, or a related field, or four or more years of relevant work experience.

• Four or more years of relevant work experience, demonstrated through one or a combination of work and/or military experience, or specialized training.

• Experience in securing RAN technologies (Diameter, GTP, eCPRI/CPRI) and a wide array of network devices, such as Cell Site Routers, eNBs, gNBs, FWA, In-Building solutions, and non-terrestrial networks. Knowledge of Internet protocols, Software-Defined Networking (SDN), OTNGN, and Hub & Spoke architectures.

• Strong practical experience with Splunk/SIEM tools is necessary for data analysis, dashboard creation, alerting, automation, risk-based alerting, managing notable events, and defining/tuning correlation searches. Familiarity with Identity and Access Management (IAM) solutions is also beneficial.

Even better if you also have...

• Possession of a CCIE (Service Provider or Security) or Nokia NRS II/SRA. Additional certifications such as CISSP, CompTIA Security+, OSCP, CCNP, CCIE, or CCNA are beneficial.

• Expertise in using Python, Ansible, or Terraform to automate network device configurations and operations.

• Competence in using Splunk or Elasticsearch for network data analysis, creating dashboards, setting up alerts, and handling large-scale internet data sources (Netflow, BGP, DNS, IDS logs).

• Knowledge of Firewalls, VPNs, IDS/IPS, DDoS mitigation, encryption technologies (IPsec, TLS), identifying vulnerabilities in RAN, and Security Information and Event Management (SIEM) tools like Splunk.

• Familiarity with Network Function Virtualization (NFV), Identity and Access Management (IAM) solutions, the system development lifecycle, mitigating network/system/application layer attacks, and working with SQL/NoSQL databases and UNIX/Linux operating systems.

• Strong organizational, project management, and written/verbal communication abilities, with the capacity to collaborate with various stakeholders and demonstrate leadership and mentoring skills.

• Fluency in security frameworks, particularly the application of CIS Benchmarks (Level 1 & 2 hardening) and mitigating MITRE ATT&CK Tactics, Techniques, and Procedures (TTPs) on network devices, along with a solid understanding of network security fundamentals.

If Verizon and this role sound like a fit for you, we encourage you to apply even if you don't meet every "even better" qualification listed above.

Verizon is an equal opportunity employer. We evaluate qualified applicants without regard to veteran status, disability or other legally protected characteristics.

Our benefits are designed to help you move forward in your career, and in areas of your life outside of Verizon. From health and wellness benefit options including: medical, dental, vision, short and long term disability, basic life insurance, supplemental life insurance, AD&D insurance, identity theft protection, pet insurance and group home & auto insurance. We also offer a matched 401(k) savings plan, up to 8 company paid holidays per year and up to 6 personal days per year, paid parental leave, adoption assistance and tuition assistance, plus other incentives, we've got you covered with our award-winning total rewards package. Depending on the role, employees have the opportunity to receive compensation in the form of premium pay such as overtime, shift differential, holiday pay, allowances, etc. Newly hired employees receive up to 15 days of vacation per year, which grows with additional service. For part-timers, your coverage will vary as you may be eligible for some of these benefits depending on your individual circumstances.