Network and Infrastructure Engineer

Job summary

The Senior Network and Infrastructure Engineer at Avon Protection plc is responsible for the operation and maintenance of IT systems across all sites and hosting providers. This role involves designing, implementing, and supporting network and infrastructure platforms while ensuring high availability, performance, and security.

Qualifications

• Cisco networking (routing, switching, VLANs, STP)
• Understanding of core network services such as DNS, DHCP, IP addressing, and network segmentation
• Good grasp of network security controls, including firewalls, VPNs, and secure access models (e.g. 802.1X/Cisco ISE)
• Proficiency with Microsoft server platforms, including Windows Server, Active Directory, and Group Policy
• Working capability in Microsoft 365 integrations, including hybrid identity, tenant-level configuration and application permissions
• Strong capability across virtualisation platforms, including Hyper‑V, VMware, and comparable hypervisors
• Understanding of high availability and clustering design across compute and network platforms
• Solid grounding in enterprise storage technologies, including SAN/NAS, RAID, replication, and performance tuning
• Understanding of backup and disaster recovery design principles, ideally utilising Veeam
• Capability in certificate services and PKI, including certificate lifecycle and secure service integration
• Understanding of patching, system hardening, and vulnerability management practices
• Familiarity with NIST security frameworks and application of controls within infrastructure environments
• Awareness of multi-site and global infrastructure considerations, including latency, resilience, and standardisation
• Familiarity with monitoring, alerting, and performance management tooling
• Understanding of ITIL-aligned service management practices

Responsibilities

• Design, implement, and maintain network, server, and storage infrastructure
• Support delivery of infrastructure solutions across Cisco-based networking environments
• Manage and support routing and switching
• Implement and maintain network security controls (firewalls, VPNs, NAC / ISE where applicable)
• Deploy and support compute platforms (physical servers and virtualised platforms)
• Support and maintain enterprise storage solutions (SAN/NAS, replication, performance tuning)
• Perform installation, configuration, and commissioning of infrastructure hardware and platforms
• Support infrastructure upgrades, migrations, and refresh activities
• Ensure patching of servers, network devices, and firmware across all platforms
• Maintain infrastructure security posture through updates, hardening, and vulnerability remediation
• Provide 3rd line support for infrastructure and network issues
• Troubleshoot performance, connectivity, and system-level issues across infrastructure layers
• Support high availability and resilience through appropriate design and configurations
• Maintain and support backup, recovery, and disaster recovery solutions
• Maintain standard builds, configurations, and deployment processes
• Monitor infrastructure health, capacity, and performance
• Produce and maintain technical documentation (network diagrams, configs, procedures)
• Work collaboratively with cloud, security, and application teams
• Contribute to automation and continuous improvement initiatives

Skills

Relocation