Network Security Engineer

Network Security Engineer Location: Plano, TX – Onsite Fulltime Job Description Must Have Technical/Functional Skills • Experience: 10 years in network security engineering, application delivery, or similar roles. • Infoblox: Hands-on experience with Infoblox DDI/IPAM administration. • Zscaler: Deep knowledge of Zscaler ZIA, ZPA, PAC files, and DLP engines. • F5: Proficiency in F5 BIG-IP LTM/GTM administration, including iRules and SSL certificate management. • Firewalling: Strong experience with Palo Alto Networks firewalls (Palo Alto experience preferred). • Networking Fundamentals: In-depth knowledge of TCP/IP, BGP, OSPF, VLANs, and DNS. • Automation: Familiarity with scripting languages (Python/Ansible) to streamline operations. Core Competencies Troubleshooting: Expert analytical skills for debugging complex traffic, authentication, and network issues using Wireshark. Collaboration: Ability to work with cross-functional teams to align network security with business objectives. Communication: Strong written and verbal skills for creating procedures and reporting to stakeholders. Education & Certifications Bachelor's degree in computer science, Information Technology, or equivalent experience. Roles & Responsibilities F5 Load Balancing & Application Delivery: Design, configure, and troubleshoot F5 BIG-IP LTM (Local Traffic Manager) and GTM (Global Traffic Manager) to ensure high availability, security, and performance of critical applications. Zscaler Security Suite (SASE): Implement and manage Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) to secure user access and enforce policies for web traffic and private applications. Infoblox DDI Management: Deploy and manage Infoblox DNS, DHCP, and IP Address Management (IPAM) solutions. Responsible for core network functionality. Firewall & Security Policy: Configure and manage enterprise firewalls (e.g., Palo Alto Networks) to enforce network security policies, including NAT, zone-based firewalling, and threat prevention. Operational Excellence: Administer PAC files for proxy traffic routing, maintain SSL inspection policies, and troubleshoot network traffic flows. Documentation & Compliance: Create and maintain network documentation, including diagrams, configurations, and change management procedures, ensuring audit readiness. United IT