Senior Level Network Security Specialist Jobs
Senior level network security specialist jobs place experienced professionals in charge of security architecture decisions, risk ownership, and the engineering teams or cross-functional initiatives that protect critical infrastructure. Hiring is concentrated across Technology & Software, Investment & Asset Management, and Automotive, with a mix of on-site, remote, and hybrid openings posted by employers like HP, Zoox, and Deloitte hiring at this level now.
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INTRODUCTION
We are seeking an expert Senior Network & Security Engineer for a 6-month contract engagement on-site in Orange County, CA. In this role, you will lead complex network and security architecture execution across enterprise multi-platform environments. You will be responsible for designing, configuring, maintaining, and troubleshooting LAN/WAN infrastructure, enterprise perimeter firewalls, load balancers, and wireless networks to ensure maximum uptime, optimal performance, and robust security posture.
ROLE AND RESPONSIBILITIES
- Architect, configure, manage, and troubleshoot Cisco enterprise routing and switching infrastructure, enterprise wireless controllers, and advanced routing protocols (BGP, OSPF, HSRP, EIGRP).
- Manage perimeter security infrastructure, including Palo Alto and Cisco ASA firewalls, security policies, profiles, network segmentation zones, and access controls.
- Oversee network security monitoring and threat detection using centralized management and security operation platforms (Panorama, Cortex XDR).
- Deploy, configure, and troubleshoot load balancing solutions (F5 LTM) including custom iRules development, traffic management, and SSL offloading.
- Perform deep-dive packet captures and traffic analysis (tcpdump, Wireshark) to diagnose complex network anomalies, execute system upgrades, and maintain updated network topology documentation (Visio).
BASIC QUALIFICATIONS
- Experience: 8+ years of dedicated hands-on experience as a Network Engineer within complex, multi-vendor enterprise environments.
- Tech Stack: Cisco Routing & Switching, Palo Alto Firewalls, F5 LTM (including iRules), Cisco WLAN, Panorama, Cortex XDR, Wireshark, and core protocols (BGP, OSPF, DNS, DHCP, HTTP/S, SSH, VoIP).
- Domain Knowledge: Expert understanding of LAN/WAN connectivity design, enterprise perimeter security principles, load balancing strategies, and infrastructure interdependencies.
- Education & Certifications: Bachelor’s degree in Computer Science, MIS, or related technical field; active CCNP (or higher) and Palo Alto certification (PCNSE/PCNSA preferred).
BENEFITS & PERKS
- High-impact, enterprise-scale engineering project scope in Orange County, CA.
- Competitive hourly contract rate.
- Dedicated technical challenge with direct ownership over high-availability infrastructure.
INTRODUCTION
We are seeking an expert Senior Network & Security Engineer for a 6-month contract engagement on-site in Orange County, CA. In this role, you will lead complex network and security architecture execution across enterprise multi-platform environments. You will be responsible for designing, configuring, maintaining, and troubleshooting LAN/WAN infrastructure, enterprise perimeter firewalls, load balancers, and wireless networks to ensure maximum uptime, optimal performance, and robust security posture.
ROLE AND RESPONSIBILITIES
- Architect, configure, manage, and troubleshoot Cisco enterprise routing and switching infrastructure, enterprise wireless controllers, and advanced routing protocols (BGP, OSPF, HSRP, EIGRP).
- Manage perimeter security infrastructure, including Palo Alto and Cisco ASA firewalls, security policies, profiles, network segmentation zones, and access controls.
- Oversee network security monitoring and threat detection using centralized management and security operation platforms (Panorama, Cortex XDR).
- Deploy, configure, and troubleshoot load balancing solutions (F5 LTM) including custom iRules development, traffic management, and SSL offloading.
- Perform deep-dive packet captures and traffic analysis (tcpdump, Wireshark) to diagnose complex network anomalies, execute system upgrades, and maintain updated network topology documentation (Visio).
BASIC QUALIFICATIONS
- Experience: 8+ years of dedicated hands-on experience as a Network Engineer within complex, multi-vendor enterprise environments.
- Tech Stack: Cisco Routing & Switching, Palo Alto Firewalls, F5 LTM (including iRules), Cisco WLAN, Panorama, Cortex XDR, Wireshark, and core protocols (BGP, OSPF, DNS, DHCP, HTTP/S, SSH, VoIP).
- Domain Knowledge: Expert understanding of LAN/WAN connectivity design, enterprise perimeter security principles, load balancing strategies, and infrastructure interdependencies.
- Education & Certifications: Bachelor’s degree in Computer Science, MIS, or related technical field; active CCNP (or higher) and Palo Alto certification (PCNSE/PCNSA preferred).
BENEFITS & PERKS
- High-impact, enterprise-scale engineering project scope in Orange County, CA.
- Competitive hourly contract rate.
- Dedicated technical challenge with direct ownership over high-availability infrastructure.
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Senior Level Network Security Specialist Jobs: Frequently Asked Questions
How do I get a senior level network security specialist job?
Employers hiring at this level look for candidates who have led security initiatives end to end, not just executed tasks. Demonstrating ownership of firewall architecture, zero-trust implementations, or incident response programs signals readiness. Certifications like CISSP, CISM, or CCNP Security strengthen a candidacy, but what sets senior applicants apart is the ability to articulate how their decisions reduced organizational risk at scale.
Which companies hire senior level network security specialists?
Companies hiring senior level network security specialists right now include HP, Zoox, and Deloitte, based on current listings on Migrate Mate as of November 2026. Hiring at this level comes primarily from large enterprises, defense contractors, financial institutions, and managed security service providers that need experienced professionals to own complex security programs rather than support them.
Are there remote senior level network security specialist jobs?
Yes, though availability varies by employer and the sensitivity of the infrastructure involved. About 50% of senior level network security specialist openings are remote or hybrid as of November 2026, reflecting strong demand from organizations comfortable with distributed security leadership for roles that do not require hands-on data center access.
What makes a network security specialist role senior level?
Senior level roles are defined by ownership and scope rather than task execution. At this stage, professionals are expected to design and govern security architectures, set standards that junior and mid-level engineers follow, lead responses to significant incidents, and advise leadership on risk posture. Mentoring team members and influencing security strategy across the organization are core expectations, not optional additions.
Which industries hire the most senior level network security specialists?
Senior Level network security specialist roles concentrate in Technology & Software, Investment & Asset Management, and Automotive, based on current listings on Migrate Mate as of November 2026. These sectors drive hiring at this level because they operate high-value or heavily regulated infrastructure where the cost of a breach demands experienced security leadership rather than entry or mid-level coverage.