Senior Infrastructure Engineer

Digital Waffle; Leicester; On-site; GBP 60,000 - 85,000; Full time

Job summary

Digital Waffle in the United Kingdom is seeking a Senior Infrastructure Engineer to own and mature a large-scale Cisco-centric network alongside Microsoft and VMware platforms. You will deliver BAU support, lead projects, and act as the senior escalation point for complex infrastructure issues.

The role covers network upgrades, server migrations, AD/DNS/DHCP, Microsoft 365, VMware, and ITIL-aligned practices. Strong CCNA/CCNP knowledge and PowerShell automation are essential.

Qualifications

• Minimum 5 years' commercial experience supporting enterprise infrastructure.
• Strong hands-on Cisco networking experience, including Cisco Routing & Switching, MPLS, VRF, CCNA/CCNP level networking knowledge.
• Strong experience with Microsoft technologies, including Windows Server, Active Directory, Group Policy, DNS & DHCP, and Microsoft 365.
• VMware administration experience.
• PowerShell scripting and automation.
• Excellent troubleshooting and problem-solving skills.
• Experience working within ITIL environments.
• Storage technologies (SAN/NAS) and backup solutions such as Veeam.

Responsibilities

• Design, support and maintain enterprise Cisco network infrastructure.
• Configure and troubleshoot routing, switching, MPLS and VRF technologies.
• Administer and support Microsoft Windows Server environments.
• Manage and maintain Active Directory, Group Policy, DNS and DHCP.
• Support Microsoft 365 services, including Exchange Online, Entra ID (Azure AD) and Intune where required.
• Administer VMware virtual infrastructure.
• Deliver infrastructure and network projects including server upgrades, migrations and platform improvements.
• Act as the senior technical escalation point for networking and infrastructure issues.
• Produce technical documentation and follow ITIL best practices.
• Minimum 5 years' commercial experience supporting enterprise infrastructure.

Skills

Cisco networking

Microsoft infrastructure

VMware

3rd line support

Escalation handling

PowerShell scripting

Technical project leadership

Education

CCNA/CCNP level networking knowledge

Tools

Veeam

VMware

Job description

Are you an experienced Infrastructure Engineer with a passion for enterprise networking? Do you enjoy working in complex environments where networking sits at the heart of the infrastructure?

We're looking for a Senior Infrastructure Engineer to join a well-established organisation with a large-scale enterprise environment. This role is heavily focused on Cisco networking, while also requiring strong Microsoft infrastructure and VMware expertise to support the wider IT estate.

The Role

As a Senior Infrastructure Engineer, you'll be responsible for maintaining, supporting and improving a large enterprise network alongside the wider Microsoft infrastructure environment. You'll provide 3rd line support, lead technical projects and act as a senior escalation point for complex networking and infrastructure issues.

You'll work across both BAU support and project delivery, including network upgrades, server migrations, Microsoft infrastructure improvements, VMware upgrades and technology refreshes.

Key Responsibilities

• Design, support and maintain enterprise Cisco network infrastructure.
• Configure and troubleshoot routing, switching, MPLS and VRF technologies.
• Administer and support Microsoft Windows Server environments.
• Manage and maintain Active Directory, Group Policy, DNS and DHCP.
• Support Microsoft 365 services, including Exchange Online, Entra ID (Azure AD) and Intune where required.
• Administer VMware virtual infrastructure.
• Deliver infrastructure and network projects including server upgrades, migrations and platform improvements.
• Act as the senior technical escalation point for networking and infrastructure issues.
• Produce technical documentation and follow ITIL best practices.
• Minimum 5 years' commercial experience supporting enterprise infrastructure.
• Strong hands-on Cisco networking experience, including:
• Cisco Routing & Switching
• MPLS
• VRF
• CCNA and/or CCNP level networking knowledge (certification or equivalent commercial experience).
• Strong experience with Microsoft technologies, including:
• Windows Server
• Active Directory
• Group Policy
• DNS & DHCP
• Microsoft 365
• VMware administration experience.
• Good understanding of TCP/IP, VLANs, OSPF, BGP and network security principles.
• Experience working within large enterprise environments.
• Strong troubleshooting and problem-solving skills.
• PowerShell scripting and automation.
• Storage technologies (SAN/NAS).
• Backup solutions such as Veeam.
• Experience working within an ITIL environment.