Network Security Engineer III
Rackspace · Remote
About this role
Rackspace is hiring a mid-level Network Engineer in the operations function as a remote position. The posting calls out experience with VMware, Networking, Security, Encryption.
- Role
- Network Engineer
- Function
- operations
- Level
- mid
- Track
- Individual contributor
- Employment
- Full-time
- Location
- Remote
- Work mode
- Remote
- Posted
- Apr 24, 2026
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Job description
from Rackspace careersJob Summary:
We are seeking a Network Security Engineer-III to join our infrastructure team. This role requires significant experience in the security space for someone who can seamlessly navigate traditional hardware, software-defined networking, and advanced load-balancing solutions. You will be the primary architect and administrator for our high-availability security stack, with a specific focus on Cisco (ASA/Firepower/ISE), Palo Alto, F5 BIG-IP, and VMware NSX.
Key Responsibilities:
Multi-Vendor Firewall Management: Lead the migration, configuration, and maintenance of Cisco ASA (Classic) and Firepower (FTD) systems, while managing a robust Palo Alto environment via Panorama.
Application Delivery & Security: Design and manage F5 BIG-IP solutions, focusing on LTM (Local Traffic Manager) for load balancing and ASM/WAF (Application Security Manager) for protecting web applications.
Software-Defined Networking (SDN): Implement and manage micro-segmentation policies and virtualized security services within VMware NSX (T/V) environments.
Legacy to Next-Gen Migration: Architect strategies to transition legacy Cisco ASA rulesets to Cisco Firepower or Palo Alto NGFWs without service disruption.
Tier 3 Support: Act as the highest escalation point for complex network outages, security breaches, or performance degradation across the global fabric.
Provide exceptional customer support via the phone and ticketing system
Own level-appropriate customer requests and issues, seeing them through to resolution
This is an excerpt. Read the full job description on Rackspace careers →