3rd Line Infrastructure Engineer - Windows

Third Line Infrastructure Engineer

📍 Hatfield or Derby or Nottingham / Hybrid | Competitive Salary + Benefits

Join a Team Supporting Critical Enterprise Infrastructure

Are you an experienced infrastructure professional looking for a role where your technical expertise genuinely makes a difference?

We're partnering with a leading technology services organisation that supports some of the UK's most complex and secure IT environments. Due to continued growth, they're seeking a skilled Third Line Infrastructure Analyst to join a high-performing technical team supporting mission-critical services within a regulated enterprise environment.

This is an opportunity to work across a diverse infrastructure estate, combining advanced support, technical project delivery, and continuous improvement initiatives, all while collaborating with experienced engineers and technical specialists.

The Opportunity

As a senior member of the infrastructure support team, you'll take ownership of complex technical issues, contribute to key infrastructure projects, and help maintain the security, availability and performance of critical business systems.

You'll be trusted to investigate challenging incidents, implement infrastructure enhancements, and work closely with stakeholders to deliver reliable and secure technology services.

What You'll Be Doing

Providing expert 3rd Line support across enterprise-scale Windows environments. Diagnosing and resolving complex infrastructure issues. Designing, implementing and supporting Windows-based infrastructure solutions. Supporting project delivery, upgrades and technical change activity. Contributing to service improvement and infrastructure optimisation initiatives. Producing and maintaining technical documentation. Collaborating with customers, internal teams and technical stakeholders. Participating in an on-call rota supporting critical services when required.What We're Looking For

You'll have demonstrable experience operating within large-scale enterprise infrastructure environments and possess strong troubleshooting and analytical skills.

Experience in several of the following technologies would be highly advantageous:

✅ Active Directory, Group Policy, DNS & DHCP

✅ Microsoft Windows Server

✅ Azure AD / Entra ID, ADFS & SSO

✅ VMware & Virtualisation Technologies

✅ Exchange & Microsoft Collaboration Technologies

✅ SCCM / Endpoint Management

✅ PKI & Certificate Management

✅ PowerShell Scripting & Automation

✅ Infrastructure Monitoring & Security Tooling

✅ Networking Fundamentals (LAN, WAN, Routing & Firewalls)

About You

Experienced in a 3rd Line Infrastructure or Senior Support role. Comfortable working independently and solving complex technical challenges. Strong communicator with a customer-focused approach. Eligible to obtain Security Clearance (or already cleared). Passionate about technology and continuous improvement.Why Apply?

You'll be joining a highly respected technology organisation that invests heavily in its people, encourages professional development, and offers exposure to enterprise-scale technologies that will further accelerate your career. You'll work alongside talented technical professionals in a collaborative environment where your expertise is valued and your contribution is recognised.

Interested?

Apply today to learn more about this exciting opportunity and take the next step in your infrastructure career.

Modis International Ltd acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers in the UK. Modis Europe Ltd provide a variety of international solutions that connect clients to the best talent in the world. For all positions based in Switzerland, Modis Europe Ltd works with its licensed Swiss partner Accurity GmbH to ensure that candidate applications are handled in accordance with Swiss law.

Both Modis International Ltd and Modis Europe Ltd are Equal Opportunities Employers.

By applying for this role your details will be submitted to Modis International Ltd and/ or Modis Europe Ltd. Our Candidate Privacy Information Statement which explains how we will use your information is available on the Modis website