Senior Network Security Engineer - Palo Alto / Cisco ISE / SD-WAN (Hybrid Onsite)

• Design, implement, and support enterprise network-security solutions
• Configure and troubleshoot Zscaler, Palo Alto, Prisma SD-WAN, Strata Cloud Manager, and Cisco ISE
• Manage firewall rules, secure-access policies, VPNs, network segmentation, and identity-based controls
• Monitor security platforms and resolve performance, connectivity, and authentication incidents
• Lead upgrades, migrations, policy changes, and production deployments
• Perform root-cause analysis and recommend preventive improvements
• Collaborate with network, cloud, infrastructure, identity, and cybersecurity teams
• Maintain architecture diagrams, operational procedures, and troubleshooting documentation
• Provide technical guidance and support to engineering and operations teams

Job TitleSenior Network Security Engineer - Palo Alto / Cisco ISE / SD-WAN (Hybrid Onsite)LocationFrisco, TXDuration13 MonthsInterview TypeVirtual / In-PersonNoteDallas local required with expectation to work in Dallas office (Addison) 2-3x/wkApplicants without 10+ years of network-security experience or without hands-on experience in the core required technologies may not be considered.DescriptionWe are seeking a Senior Network Security Engineer with at least 10 years of hands-on experience designing, implementing, securing, and supporting enterprise network environments. The ideal candidate will have recent experience with Zscaler, Palo Alto Networks, Prisma SD-WAN, Strata Cloud Manager, and Cisco ISE.Required Skills

• 10+ years of hands-on network security experience
• Strong experience with Zscaler Internet Access, Zscaler Private Access, security policies, traffic forwarding, and troubleshooting
• Advanced Palo Alto firewall administration, including security policies, NAT, VPN, Panorama, upgrades, and incident troubleshooting
• Hands-on Prisma SD-WAN implementation, configuration, policy management, monitoring, and troubleshooting
• Experience managing Palo Alto environments through Strata Cloud Manager
• Strong Cisco Identity Services Engine experience, including 802.1X, RADIUS, TACACS+, profiling, posture, guest access, and network-access policies
• Strong understanding of routing, switching, TCP/IP, DNS, VPNs, network segmentation, and zero-trust security
• Experience diagnosing complex connectivity, authentication, application-access, and security-policy issues
• Ability to produce network diagrams, implementation plans, runbooks, and technical documentation
• Strong written and verbal communication skills, * Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related field
• Relevant certifications from Palo Alto Networks, Zscaler, or Cisco
• Experience supporting large enterprise or public-sector environments
• Experience with zero-trust architecture, cloud-delivered security, and hybrid networks

Candidate Submission RequirementsPlease include the following information with each submission:

• Total network-security experience
• Years of experience with each required platform
• Most recent project using each required platform
• Current location
• Availability and notice period
• Work authorization
• Willingness to work onsite or hybrid, if required
• Rate or salary expectation

Top Skills

Required skill Minimum expectation

Network Security 10+ years

Zscaler Recent hands-on experience

Palo Alto Networks Advanced hands-on experience

Prisma SD-WAN Implementation and support experience

Strata Cloud Manager Hands-on administration experience

Cisco ISE Strong policy and troubleshooting experience

• 401(k)
• Dental insurance
• Employee assistance program
• Flexible schedule