Senior Network Security Engineer Jobs in California
Senior Network Security Engineer jobs in California are among the most active in the country, concentrated in enterprise technology, defense contracting, financial services, and cloud infrastructure across the San Francisco Bay Area, Los Angeles, and San Diego. Established employers such as Cisco, Lockheed Martin, and Bank of America maintain deep engineering teams in California and recruit consistently for senior-level talent. The most in-demand specialties include zero-trust architecture, cloud security engineering, and threat detection and response. Find a role that fits below and apply directly.
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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.
See All 34 Senior Network Security Engineer Jobs in California
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Where California roles are concentrated, by current openings.
Senior Network Security Engineer Job Market in California
A snapshot from current California openings, updated as new roles post.
Who's Hiring
Top Industries Hiring
- Technology & Software
- Automotive
- Electronics & Hardware
What California Employers Look For
The qualifications that appear most often in senior network security engineer jobs across California.
- Seven or more years of experience in network security engineering or a closely related discipline
- Active CISSP, CCIE Security, or equivalent professional security certification required by most employers
- Deep hands-on experience with firewalls, IDS/IPS, SIEM platforms, and VPN technologies
- Demonstrated expertise in cloud security across AWS, Azure, or Google Cloud environments
- Experience designing and implementing zero-trust network access frameworks at enterprise scale
- Bachelor's degree in computer science, information security, or a directly related technical field
Senior Network Security Engineer Jobs in California: Frequently Asked Questions
How do you become a senior network security engineer in California?
The path typically starts with a bachelor's degree in computer science, cybersecurity, or a related field, followed by several years in network engineering or information security roles. California does not require a state-issued license for this role, but employers consistently prioritize candidates who hold recognized industry certifications such as CISSP, CCIE Security, or CompTIA Security+. Building hands-on experience with enterprise firewalls, cloud platforms, and security operations centers strengthens a candidacy significantly in California's competitive market.
How much do senior network security engineers make in California?
Senior network security engineers in California earn a median of about $138,570 a year, based on May 2025 Bureau of Labor Statistics wage data, ranging from around $66,070 for the lowest 10% to over $221,000 for the top 10%. Pay rises with experience, specialty, and employer.
Which companies hire senior network security engineers in California?
Employers hiring senior network security engineers in California right now include Palo Alto Networks, Zoox, and SIGMA DEFENSE, based on current listings on Migrate Mate as of November 2026. California's concentration of defense contractors, major cloud providers, and large financial institutions means demand is spread across both the Bay Area and Southern California, with a consistent need for senior-level expertise in enterprise and classified environments.
Which California cities have the most senior network security engineer jobs?
Santa Clara, San Diego, and Los Angeles have the most senior network security engineer openings in California. The Bay Area's density of technology headquarters and cloud infrastructure companies drives the largest share of postings, while Los Angeles and San Diego reflect demand from defense contractors, entertainment studios, and the region's growing cybersecurity services sector.
Are there remote senior network security engineer jobs in California?
Yes, and more than many technical roles, though on-site work remains common for positions tied to classified environments or critical infrastructure. About 67% of senior network security engineer openings tied to California are remote or hybrid as of November 2026, reflecting the role's desk-based and analytical components. Security architecture, threat analysis, and cloud security work are the sub-areas most commonly offered with remote flexibility.
How can I get hired as a senior network security engineer in California with little or no experience?
The most realistic entry path is moving through a junior network engineer or SOC analyst role first, then building toward the senior level over several years. Large California technology companies and defense contractors such as Northrop Grumman, Intel, and Palo Alto Networks run early-career and associate programs that accept candidates without senior-level backgrounds. Earning a recognized certification like CompTIA Security+ or Cisco's CCNA Security before applying gives candidates a measurable edge in California's screening process.
Where can I find and apply to senior network security engineer jobs in California?
You can find and apply to senior network security engineer jobs in California on Migrate Mate, which lists current California openings. Find the roles that fit your experience and apply directly.
See All 34 Senior Network Security Engineer Jobs in California
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