Network and Infrastructure Engineer

Avon Technologies plc; Melksham; On-site; GBP 70,000 - 100,000; Full time

Job summary

Avon Technologies plc is seeking a Senior Network and Infrastructure Engineer to design, operate and support on-premises and private cloud infrastructure across multiple sites. You will manage Cisco networking, server and storage platforms, ensure high availability, performance and security, and work with IT teams and business stakeholders.

The role requires expertise in Windows Server, Active Directory, VMware/Hyper-V, M365, PKI, backup and DR, and a focus on patching, hardening and

Qualifications

• Experience designing and operating Cisco networking, VLANs, and routing.
• Strong knowledge of DNS, DHCP, IP addressing and network segmentation.
• Experience with network security, firewalls, VPNs, and 802.1X/Cisco ISE.
• Proficiency with Windows Server platforms (AD, Group Policy).
• Experience with Microsoft 365 integrations and hybrid identity.
• Experience with virtualization including Hyper-V and VMware.
• Understanding of high availability and clustering in compute and network.
• Knowledge of SAN/NAS, replication, and performance tuning.
• Experience with backup/disaster recovery design (Veeam).
• Familiarity with PKI and certificate management.
• Security frameworks (NIST) and vulnerability management.
• Multi-site/global infrastructure experience.
• Monitoring and performance management tooling.
• ITIL-aligned service management.

Responsibilities

• Operate and maintain network, server, and storage infrastructure.
• Support Cisco-based networking environments.
• Manage and support routing and switching.
• Implement and maintain network security controls and patching.
• Provide 3rd line support for infrastructure and network issues.
• Collaborate with cloud, security, and application teams.
• Maintain backups, recovery and DR solutions.
• Produce and maintain technical documentation across networks and systems.
• Contribute to automation and continuous improvement initiatives.
• Oversee lifecycle of infrastructure assets and vendor relationships.
• Coach and mentor junior team members.

Skills

Cisco networking

DNS/DHCP/IP addressing

Network security controls

Windows Server & AD

Microsoft 365 integrations

Hyper-V/VMware

High availability/clustering

SAN/NAS storage

Backup/DR (Veeam)

PKI / certificate services

Patching & hardening

ITIL service management

Tools

Hyper-V

VMware

Veeam

Cisco ISE

Job description

Scope of the Function

This role sits in the EUD and Infrastructure team, which is responsible for the design, implementation and support of Avon’s IT Infrastructure.

Senior Network and Infrastructure Engineer Responsibilities

The Senior Network and Infrastructure Engineer is responsible for the operation and maintenance of systems across all sites and hosting providers. The role manages on-premises and private cloud infrastructure, ensuring high availability, performance, and security of core IT systems while supporting strategic transformation initiatives. This position works within established standards and architectures, supporting network and infrastructure platforms and collaborating with wider IT teams and business stakeholders.

• 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

Key Outputs

• Operates as part of the Group-wide IT function
• Works with IT Directors for each Strategic Business Unit (SBU)
• Supports site IT and SBU IT teams to maintain service reliability
• Collaborates across IT and business stakeholders
• Takes direction from the Director of M365, EUD and Infrastructure
• Works within a matrix IT structure
• Engages with third-party vendors for support and service delivery
• Provides technical guidance and support to engineers and service teams across multiple locations
• Engages with third-party vendors and partners for support, delivery, and escalation of infrastructure solutions
• Oversees the lifecycle of infrastructure assets (from planning upgrades to retiring legacy systems), and manages vendor relationships and contracts for support and new solutions

Other Responsibilities

• Coaching and mentoring Junior team members

Essential Background and Skills

• 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

Desirable

• 10 years+ of working with virtualisation, Windows server and storage technologies
• 5 years+ of working with Cisco technologies, leading and managing network platforms
• 3 years+ of Microsoft Cloud experience across M365 and Azure
• Experience of working with a multi-national business and regulated environments
• Able to develop and contribute to solution designs and implementation

Competencies

• Good communication, interpersonal and presentation skills
• Self‑motivated and able to prioritise tasks and manage own time efficiently
• Proven ability to work independently or as part of a team
• Developing self, individuals and teams
• Demonstrate a Continuous Improvement mindset and traits
• Technical documentation and presentation to IT and business stakeholders