Senior Infrastructure Engineer

TechNET IT Recruitment Ltd; Greater London; Hybrid; GBP 70,000 - 100,000; Full time

Job summary

TechNET IT Recruitment Ltd is helping a London-based, multi-site organisation hire a Senior Infrastructure Engineer to own enterprise infrastructure spanning cloud, on-premises platforms and networking. You’ll influence technical direction and partner with senior stakeholders and MSPs to deliver secure, resilient services.

In this role you’ll drive infrastructure strategy, review designs, and lead upgrades and technology refresh initiatives, balancing hands-on engineering with strategic

Qualifications

• Strong infrastructure engineering background with ownership mindset.
• Experience shaping infrastructure strategy and roadmaps.
• Ability to influence stakeholders and manage external providers.
• Experience in multi-site enterprise environments preferred.

Responsibilities

• Take ownership of enterprise infrastructure across cloud, on‑premise, and network.
• Provide technical leadership to MSPs and partners.
• Review designs, change requests and implementation plans.
• Drive infrastructure transformation initiatives and technology refresh.
• Support Azure and Microsoft 365 services alongside Windows Server, Linux and virtualization.
• Collaborate with internal stakeholders and external vendors to ensure high‑quality delivery.
• Improve resilience, disaster recovery, and platform performance.

Skills

Infrastructure engineering

Technical leadership

Stakeholder management

Cloud & on‑premise

Networking

Tools

Microsoft 365

Azure

Windows Server

Active Directory / Entra ID

VMware / Hyper‑V

Fortinet

Cisco Meraki

Job description

Are you an experienced Infrastructure Engineer looking to step into a role where you'll have genuine ownership, influence technical direction and play a key role in shaping enterprise infrastructure?

We're working with a well-established, multi-site organisation operating within a highly regulated, customer-facing environment to recruit a Senior Infrastructure Engineer. This is an opportunity to join a business investing heavily in its technology estate, where you'll become the technical authority across infrastructure whilst working alongside senior stakeholders and strategic technology partners.

This isn't a traditional support role. You'll be responsible for helping shape infrastructure strategy, driving technical improvements and ensuring managed service providers deliver secure, resilient and high-performing services across a modern Microsoft environment.

The Opportunity

You’ll join a collaborative technology team where you’ll take ownership of enterprise infrastructure spanning cloud, on-premise platforms and networking technologies.

Working closely with internal stakeholders and external managed service providers, you’ll provide technical leadership, review infrastructure designs, challenge supplier recommendations and help deliver infrastructure transformation initiatives across a complex multi-site estate.

This role offers an excellent balance of hands‑on engineering and strategic influence, making it ideal for someone looking to take the next step in their infrastructure career.

Responsibilities

• Take ownership of enterprise infrastructure across cloud, server, virtualisation and network environments.
• Act as the primary technical contact for managed service providers and infrastructure partners.
• Review and challenge technical designs, change requests and implementation plans.
• Support infrastructure strategy, standards and technology roadmaps.
• Lead infrastructure upgrades, cloud adoption and technology refresh initiatives.
• Support Microsoft Azure and Microsoft 365 services alongside Windows Server, Linux and virtualisation platforms.
• Work across enterprise networking technologies including Cisco Meraki and Fortinet.
• Improve resilience, availability, disaster recovery and overall platform performance.
• Support infrastructure projects and wider technology transformation programmes.
• Build strong relationships with suppliers and internal stakeholders to ensure high-quality technical delivery.

About You

You’ll have a strong infrastructure engineering background and enjoy taking ownership of technical environments rather than simply maintaining them.

You’ll ideally have experience with:

• Microsoft 365
• Windows Server
• Active Directory / Microsoft Entra ID
• VMware and/or Hyper‑V
• Fortinet
• Infrastructure monitoring and disaster recovery
• Working with managed service providers or outsourced infrastructure partners

You’ll be comfortable making technical decisions, influencing stakeholders and remaining hands‑on when required.

Experience within multi-site enterprise environments such as hospitality, retail, leisure, financial services or other customer-facing organisations would be highly advantageous.

Relevant certifications including Azure Solutions Architect, Azure Administrator, CCNP or ITIL are welcomed but practical experience is valued just as highly.

Why Apply?

This is an opportunity to move into a role with genuine technical ownership and influence, working across a modern Microsoft infrastructure within a business that continues to invest in technology.

You’ll have the opportunity to shape infrastructure strategy, work with senior stakeholders, influence key technical decisions and play a major role in the ongoing evolution of the technology estate.

Location: Hybrid, London, with occasional travel to other UK locations.