Senior Infrastructure & Security Engineer - Linux / Infrastructure / Cyber Security / Bare Metal

Senior Infrastructure & Security Engineer - Linux / Infrastructure / Cyber Security / Bare Metal

We are currently partnered with a fast-growing technology company building enterprise-grade infrastructure to support high-performance computing and AI workloads. As part of their continued growth, they are looking to hire a Senior Infrastructure & Security Engineer to design, deploy, and secure a modern bare-metal infrastructure environment while maintaining the highest standards of security, reliability, and operational excellence.

This is a senior, hands-on engineering role focused on building and securing enterprise infrastructure across physical servers, networking, Linux systems, and cloud-native tooling within a highly security-conscious environment.

Key responsibilities

• Design, deploy, and maintain high-performance bare-metal Linux infrastructure and enterprise GPU environments
• Rack, cable, provision, and configure physical servers, networking equipment, and colocation infrastructure
• Implement defence-in-depth security strategies across infrastructure, networks, and operating systems
• Configure and maintain secure networking, including VLAN segmentation, firewalls, VPNs, and zero-trust access controls
• Harden Linux operating systems through secure configuration, access controls, auditing, and security best practices
• Deploy and manage secure self-hosted internal platforms and collaboration tools

Key requirements

• Strong commercial experience managing enterprise Linux infrastructure and bare-metal environments
• Deep expertise in Linux system administration across Ubuntu, Debian, RHEL, or similar distributions
• Strong understanding of datacentre operations, physical server deployment, storage, RAID, IPMI/iDRAC, and enterprise networking
• Extensive knowledge of infrastructure security, system hardening, firewalls, VPN technologies, and network segmentation
• Experience configuring Layer 2 and Layer 3 networking, switching, routing, and secure network architecture
• Strong scripting and automation skills using Bash and Infrastructure as Code tools such as Ansible and Terraform
• Experience implementing monitoring, logging, auditing, backup, and disaster recovery solutions
• Excellent troubleshooting skills with a proactive approach to infrastructure reliability and security

Keywords

Senior Infrastructure Engineer / Infrastructure Engineer / Security Engineer / Linux Engineer / Systems Administrator / DevOps / Infrastructure as Code / Ansible / Terraform / Linux Administration / Ubuntu / Debian / RHEL / Bare Metal / Datacentre / Colocation / NVIDIA GPU / CUDA / Enterprise Infrastructure / Cyber Security / Network Security / Firewalls / VPN / WireGuard / Tailscale / VLAN / IPMI / iDRAC / RAID / SIEM / Intrusion Detection / System Hardening / Enterprise IT / High Performance Computing / HPC / AI Infrastructure

By applying to this role you understand that we may collect your personal data and store and process it on our systems. For more information please see our Privacy Notice