Job Description: Network Security Engineer II
Job Summary
We are seeking a Network Security Engineer II to join our infrastructure team. This role requires 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 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 phone and ticketing systems.
Own level-appropriate customer requests and issues, seeing them through to resolution.
Handle support escalations from other engineers and teams as per escalation procedures.
Collaborate with Service Delivery Managers and Account Executives to build strong customer relationships.
Work closely with customers during the pre-implementation phase to design and architect solutions.
Coordinate with implementation teams to quality-check deployments and perform initial vulnerability assessments.
Research, plan, and coordinate complex maintenance activities.
Participate in Root Cause Analysis (RCA) exercises to drive process and technology improvements.
Share knowledge with other administrators and engineers via documentation and training sessions.
Contribute to the development of technical best practices.
Prepare and review policy and process standards.
Communicate effectively (verbal and written) with customers and internal stakeholders, including presentations.
Be available for flexible working hours (24x7x365 coverage, including weekends and holidays).
Technical Skills & Qualifications
Security & Networking Stack
Cisco Specialist:
Advanced knowledge of Cisco ASA (CLI/ASDM) and Firepower Threat Defense (FTD) managed via FMC.
Palo Alto Expert:
Deep experience with Palo Alto NGFW features (App-ID, User-ID, SSL Decryption).
Load Balancing:
Proficiency in F5 BIG-IP, including iRules development, SSL offloading, and traffic steering.
Virtualization:
Hands-on experience with VMware NSX, including distributed firewalls (DFW) and edge gateways.
Protocols:
Strong knowledge of TCP/IP, BGP, OSPF, and deep packet inspection.
Required Certifications
Candidates must hold industry-recognized certifications:
1. Cisco Security (Primary):
CCNA Security – Required
CCNP Security – Highly Preferred
Specialist certifications in Firepower or ASA are a significant plus
2. Palo Alto Networks (Secondary):
PCNSE (Palo Alto Networks Certified Network Security Engineer) – Highly Preferred
3. Supplemental (Preferred):
F5-CTS (Certified Technology Specialist)
VCP-NV (VMware Certified Professional – Network Virtualization)
Experience Requirements
Intermediate-level professional experience in network security engineering.
Demonstrated experience managing complex firewall rule bases (10,000+ rules) across multiple platforms.
Expertise in troubleshooting complex asymmetric routing issues and application-level latency in multi-vendor environments.



About Rackspace Technology
We are the multicloud solutions experts. We combine our expertise with the world’s leading technologies — across applications, data and security — to deliver end-to-end solutions. We have a proven record of advising customers based on their business challenges, designing solutions that scale, building and managing those solutions, and optimizing returns into the future. Named a best place to work, year after year according to Fortune, Forbes and Glassdoor, we attract and develop world-class talent. Join us on our mission to embrace technology, empower customers and deliver the future.
More on Rackspace Technology
Though we’re all different, Rackers thrive through our connection to a central goal: to be a valued member of a winning team on an inspiring mission. We bring our whole selves to work every day. And we embrace the notion that unique perspectives fuel innovation and enable us to best serve our customers and communities around the globe. We welcome you to apply today and want you to know that we are committed to offering equal employment opportunity without regard to age, color, disability, gender reassignment or identity or expression, genetic information, marital or civil partner status, pregnancy or maternity status, military or veteran status, nationality, ethnic or national origin, race, religion or belief, sexual orientation, or any legally protected characteristic. If you have a disability or special need that requires accommodation, please let us know.
