Network Security Engineer

Job Title: Network Security Engineer

Location: Plano, TX

Employment Type: Full-time

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

• Bachelors 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.