Senior Infrastructure Engineer - SC Cleared - 12 month contract - HybridContract Length: 12 monthsLocation: Newcastle (Preferred), Manchester, Leeds, Birmingham, or Blackpool (Peel Park)Hybrid Working: Around 3 days on-site, 2 days remote.Pay Rate: Max £650 per day (Umbrella) (Inside IR35)Security Clearance: Mandatory Active SC Clearance is required for this role.?? Role OverviewWe are looking for a Senior Infrastructure Engineer (NetDevOps) to design, build, and evolve large-scale enterprise network platforms.This isn't an operations or 'maintenance' role. We need a builder-someone who can jump straight into design and delivery, applying NetDevOps principles to support critical, high-availability services. You'll be bridging the gap between traditional networking and modern cloud-integrated infrastructure.??? Key ResponsibilitiesDesign & Implementation: Build and enhance enterprise network infrastructure across data centers, hybrid, and multi-cloud environments (Azure, AWS, OCI) ??.Security First: Implement Palo Alto firewall policies aligned with Zero Trust principles ???.Traffic Engineering: Optimize complex OSPF and BGP environments for maximum resilience.Automation: Replace manual tasks with Python, Ansible, and Terraform to drive speed and consistency ??.Collaboration: Work alongside Architecture and Cloud teams to ensure solutions are scalable and secure.Modernization: Drive the transition from legacy systems to VXLAN/EVPN fabrics and SD-WAN technologies.? Essential Technical Skills (The 'Must-Haves')To be successful, you need deep, hands-on expertise in:Enterprise Network Engineering ??Complex OSPF & BGP routing.Design of resilient, high-availability traffic flows.Firewall & Security ??Extensive experience with Palo Alto firewalls.Network segmentation and Zero Trust architecture.Data Center Architecture ??VXLAN / EVPN, VRF segmentation, and multi-site fabrics.Experience with Arista (or equivalent) and F5 BIG-IP (LTM, APM, ASM).Automation & NetDevOps ??Scripting with Python and Ansible.CI/CD pipelines (GitLab) and Infrastructure as Code (Terraform).? Desirable Skills (The 'Nice-to-Haves')Aruba Central / ClearPass ??SD-WAN technologiesSaaS and cloud-delivered WLAN/WiFi solutionsPrior experience modernizing large-scale legacy public sector networks?? What This Role Is NotNot an Operations-only or monitoring role.Not a pure SRE role without deep networking roots.Not an Incident Management role without design/build responsibilities.If you are interested, please apply directly.Randstad Technologies is acting as an Employment Business in relation to this vacancy.JBRP1_UKTJ