Network Security Architect in Cardiff

Rackspace Technology is a leading provider of expertise and managed services across all the major public and private cloud technologies. We\’ve evolved Fanatical Support to encompass the entire customer journey – providing Fanatical ExperienceTM from first consultation to daily operations. Our passionate experts combine the power of proactive, always-on service and expertise with best-in-class tools and automation to deliver technology when and how our customers need it.

We are seeking an experienced Network Security Architect to design, implement, and optimise secure, high-performance network infrastructures across our Sovereign Customer environments.

This role is responsible for defining network architecture standards, leading major network transformation initiatives, and ensuring the resilience and security of our switching and firewall platforms. On a regular basis, you will be expected to produce high-quality design documentation, including HLDs, LLDs, diagrams, and standards before implementation and to be familiar with technical service design reviews for Governance.

You will work closely with security, infrastructure, and operations teams to deliver scalable network solutions that support business growth, regulatory compliance, and modern security practices.

Specific areas of expertise

Extensive experience designing and implementing enterprise-grade firewall and switching solutions.

Strong knowledge of firewall technologies (e.g., Palo Alto, Fortinet, Cisco ASA/Firepower, Check Point).

Deep understanding of switching architectures (Cisco, Arista, Juniper, etc.).

Expertise in routing protocols (BGP, OSPF, EIGRP), network segmentation, and secure access design.

Strong understanding of network security principles, Zero Trust, and compliance frameworks.

Ability to produce high-quality architectural documentation and diagrams.

Excellent troubleshooting, analytical, and communication skills.

Required skills (must have)

CCNP/CCIE, PCNSE, JNCIP/JNCIE, NSE, or equivalent.

NSX Networking

Switching Architecture

BGP / OSPF / EIGRP

Zero Trust

Palo Alto

Cisco

Fortinet / Fortiweb / Fortigate

VXLAN

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We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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