Senior Network Security Engineer IV – UK | Lead & Secure Cloud

WebHosting; United Kingdom; Remote; GBP 48,000 - 62,000; Full time

Job summary

Rackspace is seeking a Senior Network Security Engineer IV for the UK. You will guide customers on complex network security issues, oversee escalations, and drive security configurations across firewalls, load balancers, and cloud-native tooling.

Expect hands-on troubleshooting, documentation, and collaboration with cross-functional teams. The role emphasizes independent ownership, mentoring peers, and contributing to security policy adherence.

Qualifications

• 7+ years of experience in Networking/Network Security.
• Working knowledge of NSX-T, Palo Alto, Cisco FirePower, F5.
• Desirable Fortigate, Azure, Cisco Nexus, Panaroma, ACI, Cloudflare.
• At least one relevant networking certification (e.g., CCNA).
• Proven ability to work independently and guide others.
• May lead projects or project steps within larger initiatives.

Responsibilities

• Configure, troubleshoot, and escalate for Firewalls & Load Balancers, Windows/Linux admin, or Cloud Native Tooling.
• Create documentation for support and operations tasks.
• Configure, plan, install, maintain, and optimize network systems with security policies.
• Resolve engineering issues by owning customer requests to completion.
• Design, schedule and coordinate maintenance activities.
• Engineer and implement customized security solutions.
• Collaborate with Account Managers to build strong customer relationships.
• Share knowledge with other Engineers and Administrators.
• Mentor and train junior Rackers.
• Perform other incidental tasks as needed.

Skills

NSX-T

Palo Alto

Cisco FirePower

F5

Fortigate

Azure

Cisco Nexus

Panaroma

ACI

Cloudflare

CCNA

7+ years experience

Independent working

Project leadership

Tools

iRule (TCL)

Perl scripts

Job description

Rackspace is seeking a Senior Network Security Engineer IV for the UK. You will guide customers on complex network security issues, oversee escalations, and drive security configurations across firewalls, load balancers, and cloud-native tooling.

Expect hands-on troubleshooting, documentation, and collaboration with cross-functional teams. The role emphasizes independent ownership, mentoring peers, and contributing to security policy adherence.