Verizon · 1 hour ago
Network Security Senior Engineer
Southlake, TX
Full-time
Hybrid
Mid, Senior Level
$101K/yr - $194K/yr
4+ years expVerizon is a company that connects people to what brings them joy, and they are seeking a highly motivated and experienced Cybersecurity Engineer to join their Network Security Defense team. The role involves owning the security lifecycle for mission-critical network assets and requires expertise in next-gen firewalls and vulnerability management.
Communications InfrastructureInternetInternet of ThingsMobileTelecommunications
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
Qualification
Required
Bachelor's degree 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
Familiarity with Identity and Access Management (IAM) solutions
Strong working knowledge of incident response frameworks and methodologies like NIST 800-61 and MITRE ATT&CK
Expert-level ability to write complex, optimized SPL (Splunk Search Language) searches, including macros, data models, and lookups for efficient threat hunting and investigation
Experience in developing, testing, and maintaining automation playbooks using Python/API integrations and Splunk SOAR (Security Orchestration, Automation, and Response) to automate triage and response actions
Preferred
Security certifications (e.g., CompTIA Security+, CCSP, CISSP, OSCP)
Networking certifications (e.g., Palo Alto PCNSE, Cisco CCNP, or CCNA, Ciena CRS, Juniper JNCIE)
Experience with networking (especially Internet-related protocols)
UNIX or Linux systems engineering expertise
Knowledge of network-based, system-level, and application-layer attacks
Ability to configure and interpret network scans using tools such as Tenable Nessus, Qualys, Rapid7 InsightVM, or OpenVAS
Ability to interpret CVSS scores and prioritize risk
Experience with Firewalls, VPNs, IDS/IPS, DDoS mitigation, and encryption for data in transit (e.g., IPsec, or TLS) and at rest
Hands-on experience working with internet-scale data sets (Netflow, BGP, DNS, and IDS logs)
Knowledge of statistics, data visualization, anomaly detection, machine learning, and system administration
Experience with big data analytical tools like Elasticsearch and SQL/NoSQL technologies
Benefits
Medical
Dental
Vision
Short and long term disability
Basic life insurance
Supplemental life insurance
AD&D insurance
Identity theft protection
Pet insurance
Group home & auto insurance
Matched 401(k) savings plan
Up to 8 company paid holidays per year
Up to 6 personal days per year
Paid parental leave
Adoption assistance
Tuition assistance
Company
Verizon
Verizon is a broadband and telecommunications company that provides information and entertainment services.
10001+ employees
H1B Sponsorship
Verizon has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (7)
2024 (3)
2023 (2)
2022 (6)
2021 (6)
2020 (8)
Funding
Current Stage
Public CompanyTotal Funding
$34.39BKey Investors
Maryland Department of Housing and Community DevelopmentU.S. Department of DefenseConnect Maryland
2025-07-30Post Ipo Debt· $2.29B
2024-06-20Grant· $2M
2024-02-26Post Ipo Debt· $1B
Leadership Team
Daniel Schulman
Chief Executive Officer
Santiago Tenorio
SVP & CTO
Recent News
2026-01-24
2026-01-24
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