Senior Level Network Security Engineer Jobs
Senior level network security engineer jobs place experienced engineers in charge of enterprise security architecture, threat response programs, and the cross-functional teams that execute them. Roles are concentrated across Technology & Software, Investment & Asset Management, and Automotive, with a mix of on-site, remote, and hybrid settings, and 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 Engineer Jobs: Frequently Asked Questions
How do I get a senior level network security engineer job?
Employers hiring at this level look for engineers who have owned security architecture decisions end to end, not just implemented them. Hands-on depth with frameworks like NIST, MITRE ATT&CK, or Zero Trust, combined with a record of leading incident response or security program buildouts, sets candidates apart. Certifications such as CISSP or CCIE Security signal readiness for the scope these roles carry.
Which companies hire senior level network security engineers?
Companies hiring senior level network security engineers right now include HP, Zoox, and Deloitte, based on current listings on Migrate Mate as of November 2026. Hiring at this level tends to come from large enterprises, defense contractors, financial institutions, and cloud-scale technology companies that run complex, high-stakes network environments requiring experienced security ownership.
Are there remote senior level network security engineer jobs?
Yes, though availability varies by employer and security clearance requirements. About 50% of senior level network security engineer openings are remote or hybrid as of November 2026, reflecting strong demand for distributed security talent. Roles involving classified infrastructure or sensitive government networks are more likely to require on-site presence.
What makes a network security engineer role senior level?
Senior level roles are defined by scope and ownership rather than task execution. Engineers at this level design security architecture for entire networks or business units, lead incident response efforts, set policy and standards, and mentor junior engineers. They are expected to drive security strategy, not just follow it, and to influence decisions across engineering, IT, and leadership stakeholders.
Which industries hire the most senior level network security engineers?
Senior Level network security engineer 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 large, regulated, or high-value network environments where experienced engineers are needed to own risk management, compliance requirements, and proactive threat defense at scale.