Senior IT Infrastructure & Server Engineer / 3rd Line Support

Senior IT Infrastructure & Server Engineer / 3rd Line Support (hands on) An urgent start required! Leading E-commerce Company | Hybrid 2 days per week onsite | 10–12 Month FTC | Potential to Become Permanent ARCA is proud to be working with a leading e-commerce company that is looking for a hands-on Senior IT Infrastructure & Server Engineer / 3rd Line Support Analyst to join its infrastructure team on an initial 10 – 12 month fixed-term contract, with the potential for the role to become permanent. This is a great opportunity for an experienced infrastructure or 3rd line support professional who enjoys being hands-on with technology, troubleshooting complex issues and getting involved in infrastructure projects and improvements. You’ll be part of a team responsible for maintaining and evolving a large-scale Microsoft infrastructure environment, supporting both on-premises and cloud technologies. You’ll act as a technical escalation point for complex issues, take ownership of major incidents and help deliver infrastructure changes and improvements. The Role As a Senior IT Infrastructure Analyst, you will:

• Provide hands-on 3rd line infrastructure and technical support, working closely with the Service Desk and wider IT teams.
• Act as a technical escalation point for complex infrastructure issues and troubleshoot problems through to resolution.
• Take a technical lead during P1/P2 major incidents, coordinating activity across relevant resolver teams.
• Support and maintain a hybrid Microsoft infrastructure environment, covering both cloud and on-premises technologies.
• Work extensively with Microsoft Azure, Entra ID, Active Directory and Microsoft 365.
• Manage and support the end-user computing environment using Microsoft Configuration Manager (MECM/ConfigMgr) and Intune.
• Support Windows Server and desktop environments, including patching, upgrades, certificates and platform optimisation.
• Work with virtualisation technologies including VMware and Hyper-V.
• Support software deployment, provisioning and policy compliance through ConfigMgr and Intune.
• Investigate recurring issues, carry out root cause analysis and implement preventative solutions.
• Contribute to infrastructure projects, technical changes and service improvements from planning through to implementation and testing.
• Maintain technical documentation and help establish infrastructure standards and best practice.
• Participate in a 24/7 on-call rota for business-critical services.

About You We’re looking for someone who is technically strong, hands-on and comfortable operating at 3rd line level. You’ll ideally have experience working within a sizeable corporate or enterprise IT environment and be confident troubleshooting across a broad Microsoft infrastructure estate. You should have strong experience with:

• Microsoft Azure Local
• Microsoft 365
• Windows Server and desktop environments
• Microsoft Configuration Manager (MECM / ConfigMgr)
• Microsoft Intune / Endpoint Management
• Basic networking and infrastructure troubleshooting
• Experience with SQL Server, Citrix, DNS, Always On VPN, Managed File Transfer (MFT), FTPS/SFTP and enterprise backup solutions would also be beneficial.

You’ll be a strong problem solver with a methodical approach to troubleshooting, good communication skills and the ability to take ownership of issues from initial investigation through to resolution. What's on Offer?

• 10–12 month FTC
• Potential opportunity to become permanent
• Hybrid working – 2 days per week in the office
• Opportunity to join a well-established and recognisable e-commerce business
• A genuinely hands-on infrastructure / 3rd line role
• Exposure to a broad Microsoft, cloud and on-premises technology environment
• The opportunity to make a real impact through infrastructure improvements and automation

If you’re an experienced 3rd Line Support Analyst, Infrastructure Analyst, Infrastructure Engineer or Senior Infrastructure Engineer with strong Microsoft, Azure, ConfigMgr and Intune experience, we’d be keen to hear from you