Senior Network Security Engineer IV – UK (Firewall & Cloud)

Rackspace Technology, Inc.; Cardiff; Hybrid; GBP 48,000 - 62,000; Full time

Benefits offered by this job

Annual bonus incentives

Equity awards

ESPP program

Job summary

Rackspace Technology, Inc. in the UK is seeking a Senior Network Security Engineer IV to lead advanced firewall, VPN, and cloud-native networking work.

The role requires deep expertise across NSX-T, Palo Alto, Cisco FirePower, and F5, with a track record of handling complex customer issues and mentoring peers. The position is office/DC based in Cardiff, offering a competitive UK compensation range and opportunities in security automation, design, and sustained customer success.

Qualifications

• 7+ years in Networking/Network Security with hands-on routing and firewall experience.
• Experience configuring NSX-T, firewall platforms, and load balancers.
• Ability to design secure, scalable network solutions and troubleshoot complex environments.

Responsibilities

• Configure, troubleshoot, and escalate for firewalls, load balancers, and cloud tooling.
• Create docs for support tasks and operations procedures.
• Plan, install, maintain, and optimize network systems and security policies.
• Lead maintenances, engineer custom security solutions, and mentor junior staff.

Skills

NSX-T

Palo Alto

Cisco FirePower

F5

Education

CCNA or equivalent certification

Tools

Fortigate

Azure

Cisco Nexus

Panorama

ACI

Cloudflare

Job description

Rackspace Technology, Inc. in the UK is seeking a Senior Network Security Engineer IV to lead advanced firewall, VPN, and cloud-native networking work.

The role requires deep expertise across NSX-T, Palo Alto, Cisco FirePower, and F5, with a track record of handling complex customer issues and mentoring peers. The position is office/DC based in Cardiff, offering a competitive UK compensation range and opportunities in security automation, design, and sustained customer success.