Senior Network & Security Engineer – Cloud & Firewalls

Zedcor-Security-Solutions; Houston (TX); On-site; USD 110,000 - 160,000; Full time

Job summary

Zedcor Inc. in Houston, TX, is seeking a Senior Network/Firewall Engineer to design, build, secure, and maintain a large-scale hybrid network.

The role requires advanced problem-solving under pressure with emphasis on cybersecurity, uptime, encryption, monitoring, and compliance. You will work with Azure VPN Gateway, Azure Networking, Sophos firewalls, Cradlepoint routers, F5 BIG-IP, and Azure WAF, ensuring centralized logging, documentation, and readiness for SOC 2 / FedRAMP.

Qualifications

• 5+ years of hands-on network engineering, firewall engineering, or network security engineering.
• Strong Azure Networking experience, including Azure VPN Gateway, virtual networks, routing, NSGs, private connectivity, and hybrid networking.
• Strong knowledge of IPsec VPNs, SSL VPNs, routing, switching, segmentation, firewall policies, NAT, high availability, and secure remote access.
• Solid understanding of DNS and DHCP design, troubleshooting, and security best practices.
• Local Houston-area candidate able to work on-site 5 days per week.

Responsibilities

• Design, build, maintain, and troubleshoot IPsec and SSL VPN networks.
• Manage and support a Cradlepoint environment of 20,000+ devices.
• Manage Sophos firewalls or become proficient within 30 days if experienced with another platform.
• Ensure DNS and DHCP are centrally managed, monitored, logged, secured, and not hosted directly on firewalls.
• Patch, monitor, log, audit, and secure network infrastructure.
• Document network designs, firewall rules, routing policies, VPN configurations, standards, and runbooks.
• Support incident response, change management, vulnerability remediation, disaster recovery, SOC 2, FedRAMP, and StateRAMP readiness.
• Use Zedcor’s internal PKI solution for device identity, certificates, authentication, encryption, and secure management.
• Maintain centralized logging, centralized audit logging, centralized authentication, centralized monitoring, and alerting.
• Ensure firewalls are used as security enforcement points, not as core infrastructure service providers.
• Support F5 BIG-IP, Azure WAF, Azure Application Gateway, and Azure Front Door.
• Configure and troubleshoot dynamic routing, including internal BGP.
• Support Azure VPN Gateway, Azure Networking, Sophos firewalls, Cradlepoint, switches, Wi-Fi, WAF, and load-balancing platforms.

Skills

Azure Networking

IPsec VPN

SSL VPN

Firewalls

BGP

PKI / Certificates

Cradlepoint

DNS / DHCP

Security policy

Network security

Tools

Sophos firewall

F5 BIG-IP

Azure WAF

Azure Front Door

Azure Application Gateway

Cradlepoint

PKI management

Job description

Zedcor Inc. in Houston, TX, is seeking a Senior Network/Firewall Engineer to design, build, secure, and maintain a large-scale hybrid network.

The role requires advanced problem-solving under pressure with emphasis on cybersecurity, uptime, encryption, monitoring, and compliance. You will work with Azure VPN Gateway, Azure Networking, Sophos firewalls, Cradlepoint routers, F5 BIG-IP, and Azure WAF, ensuring centralized logging, documentation, and readiness for SOC 2 / FedRAMP.