Senior IT Infrastructure Analyst / 3rd Line Support Analyst

ARCA Consulting Ltd; Rusper; Hybrid; GBP 45,000 - 52,000; Full time

Benefits offered by this job

Hybrid role (2 days onsite)

Fixed-term contract 10–12 months

Job summary

ARCA Consulting Ltd is seeking a skilled 3rd line IT infrastructure specialist in the United Kingdom. The role covers hybrid Microsoft infrastructure, Azure, Entra ID and Intune, with on-call duties and a 10–12 month fixed-term contract that may become permanent.

You will own and resolve complex incidents, work across on-premises and cloud platforms, and lead technical responses during major incidents while collaborating with IT teams and service desk.

Qualifications

• Strong experience in a large corporate or enterprise IT environment.
• Hands-on Microsoft Azure Local and Microsoft 365 administration.
• Experience with Windows Server and desktop environments.
• Experience with ConfigMgr MECM and Intune/Endpoint Management.
• Solid networking knowledge and infrastructure troubleshooting.
• Experience with SQL Server, Citrix, DNS, VPN, MFT/FTPS and backups is beneficial.
• Proven problem-solving and methodical troubleshooting approach.
• Good communication and ownership of issue resolution.

Responsibilities

• Provide hands-on 3rd line infrastructure support with Service Desk and IT teams.
• Escalate complex infrastructure issues and drive problem resolution.
• Lead technical response during P1/P2 incidents across resolver teams.
• Maintain hybrid Microsoft infrastructure (cloud and on-premises).
• Work with Azure, Entra ID, AD and Microsoft 365 extensively.
• Manage end-user computing using MECM/ConfigMgr and Intune.
• Support Windows Server and desktop environments including patches and certs.
• Work with VMware and Hyper-V virtualization.
• Deploy software, provisioning and policy compliance via ConfigMgr and Intune.
• Investigate recurring issues and perform root cause analysis.
• Contribute to infrastructure projects and improvements from planning to testing.
• Maintain technical documentation and infrastructure standards.
• Participate in 24/7 on-call rota for critical services.

Skills

3rd line support

Azure Local

Microsoft 365

Windows Server

ConfigMgr MECM

Intune / Endpoint Management

Networking basics

SQL Server

Citrix

DNS

Always On VPN

MFT FTPS

Troubleshooting

Communication

Ownership

On-call

Active Directory

VMware

Hyper-V

Tools

VMware

Hyper-V

MECM/ConfigMgr

Active Directory

Job description

Salary: £45,000 - 52,000 per year

Requirements:

• Strong experience at 3rd line level in a sizeable corporate or enterprise IT environment
• Strong experience with Microsoft Azure Local
• Strong experience with Microsoft 365
• Strong experience with Windows Server and desktop environments
• Strong experience with Microsoft Configuration Manager (MECM / ConfigMgr)
• Strong experience with Microsoft Intune / Endpoint Management
• Strong experience with basic networking and infrastructure troubleshooting
• Experience with SQL Server, Citrix, DNS, Always On VPN, Managed File Transfer (MFT), FTPS/SFTP and enterprise backup solutions is beneficial
• Strong problem-solving skills with a methodical approach to troubleshooting
• Good communication skills
• Ability to take ownership of issues from initial investigation through to resolution

Responsibilities:

• 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

Technologies:

• Active Directory
• Azure
• Citrix
• Cloud
• Hyper-V
• Support
• Microsoft 365
• Microsoft Intune
• SQL
• VPN
• VMware
• Windows
• Office 365

More:

We are a leading e-commerce company offering an initial 10 to 12 month fixed-term contract with the potential to become permanent. This is a hybrid role with 2 days per week onsite, giving you the opportunity to join a well-established and recognisable business. You will be part of our infrastructure team in a genuinely hands-on role with exposure to a broad Microsoft, cloud and on-premises technology environment, and the opportunity to make a real impact through infrastructure improvements and automation.

last updated 36 week of 2026