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Senior IT Support and Infrastructure Engineer

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MTM Pet Care (LECVNG)

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Location:
United Kingdom , Norwich or Cambridge

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Category:
IT - Administration

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Contract Type:
Not provided

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Salary:

37000.00 - 45000.00 GBP / Year
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Job Description:

The Senior IT Support and Infrastructure Engineer will comprehensively assess our IT infrastructure, covering on-premises networks, virtual environments, Active Directory, Azure integration, and firewall configuration. Recommendations will be provided for issues identified, along with supply time/cost proposals. Required remedial action will be taken and implemented as appropriate.

Job Responsibility:

  • Take ownership of diagnosing and resolving issues with existing LAN and WAN infrastructure
  • Improve performance, security, and manageability across switching, routing, VLANs, DHCP, and DNS
  • Support physical cabling and server room reorganisation in preparation for infrastructure migration to Norwich
  • Ensure reliable and consistent network access across all organisational sites
  • Manage and monitor the Hyper-V environment, including provisioning, performance tuning, and troubleshooting
  • Assist in migration of services from legacy infrastructure to modern Hyper-V platforms
  • Maintain strong operational standards for patching, backups, and capacity management
  • Maintain and improve on-premises Active Directory and Group Policy structure
  • Assist with planning and implementation of a clean domain rebuild using industry best practices
  • Support Azure AD hybrid identity infrastructure, including AAD Connect, SSO, and conditional access
  • Administer and support Microsoft 365 services, including Exchange Online, SharePoint, OneDrive, Teams, and Intune
  • Maintain and optimise the organisation’s Azure AD hybrid environment
  • Ensure secure and reliable integration between cloud and on-prem infrastructure
  • Support AAD Connect, conditional access policies, and device management
  • Administer Fortinet (FortiGate) firewalls across all sites and virtual networks
  • Maintain and update firewall rules, VPNs, NAT policies, and segmentation
  • Verify alignment between firewall configurations, infrastructure layout, and security policies
  • Collaborate with audit and compliance teams to remediate vulnerabilities and improve system hardening
  • Respond to and resolve escalated infrastructure issues in collaboration with 1st/2nd line support
  • Maintain up-to-date technical documentation, diagrams, and standard operating procedures
  • Participate in infrastructure improvement initiatives and support IT-related audits and compliance work

Requirements:

  • Minimum 4–5 years’ experience in a senior infrastructure or IT support role
  • Strong hands-on experience with Microsoft environments: Windows Server, Active Directory, Office 365
  • Experience managing Azure AD and hybrid identity environments
  • Proven ability to take ownership of infrastructure issues and implement effective solutions
  • Deep understanding of TCP/IP, DNS, DHCP, VLANs, routing, and troubleshooting tools
  • Advanced knowledge of Active Directory, Group Policy, and Office 365 administration
  • Hands-on experience with Azure AD, AAD Connect, conditional access, and Intune/Defender for Endpoint
  • Strong FortiGate firewall configuration and support skills (including VPN and segmentation)
  • Excellent diagnostic and problem-solving abilities across systems and networks
  • Clear communication skills, both written and verbal, across technical and non-technical teams
  • Own transport is essential due to multi-site responsibilities (infrequent)
  • Willingness to travel between sites and provide support outside normal hours if required (infrequent)

Nice to have:

  • Certifications such as Microsoft (MCSA/MCSE/Azure), Fortinet NSE, CompTIA, or similar
  • Experience working in an MSP or multi-site environment
  • Experience mentoring staff or leading small infrastructure initiatives
  • Experience automating tasks with PowerShell or other scripting tools
  • Familiarity with Cyber Essentials Plus or equivalent security standards

Additional Information:

Job Posted:
December 10, 2025

Employment Type:
Fulltime
Work Type:
On-site work
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