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Senior IT Infrastructure & Server Engineer / 3rd Line 12mth FTC

ARCA Consulting LtdBarbican, Central London🇬🇧United KingdomPosted 23 Sept 2026

Quick Overview

Seniority
Mid Senior
Employment type
Temporary/Casual
Work mode
Hybrid
Location
Barbican, Central London, United Kingdom
Posted
2 days ago
SQLSQL ServerActive DirectoryAzureDNSVMware

Job Description

Senior IT Infrastructure &amp; Server Engineer / 3rd Line Support Engineer<br />An urgent start required!<br />Leading E-commerce Company | Hybrid 2 days per week onsite | 10–12 Month FTC | Potential to Become Permanent<br />ARCA is proud to be working with a leading e-commerce company that is looking for a hands-on Senior IT Infrastructure and 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.<br />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.<br />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.<br />The Role<br />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.<br />About You<br />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.<br />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.<br />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.<br />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<br />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

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