3rd Line IT Support & Infrastructure Specialist

Technical Resources Ltd; England; On-site; GBP 42,000 - 50,000; Full time

Job summary

A dynamic fire and security solutions provider is seeking a 3rd Line IT Support & Infrastructure Specialist to manage infrastructure projects and provide crucial support across multiple UK locations. The ideal candidate will have over 5 years’ experience, particularly in troubleshooting and ITIL frameworks. This role requires effective collaboration with third-party vendors and mentoring support engineers. A competitive salary and excellent benefits including training and a generous holiday entitlement are offered.

Benefits

Ongoing training and development opportunities

Support for professional accreditations

Generous holiday entitlement

Company pension scheme

Medicash health plan

Employee discounts

Qualifications

• Minimum 5 years in a senior IT support or infrastructure engineering role.
• In-depth experience in troubleshooting across multi-site environments.
• Strong grasp of ITIL frameworks and best practices.

Responsibilities

• Deliver 3rd line technical support across a group of seven UK locations.
• Lead and manage IT infrastructure projects including disaster recovery and network configuration.
• Administer and maintain the full Microsoft 365 stack.

Skills

Analytical and troubleshooting skills

Communication and interpersonal skills

Organisational skills

Proactive work ethic

Adaptability

Tools

Windows Server OS

Microsoft 365 administration

Active Directory

Networking hardware

Job description

Salary: Up to £50,000 per annum
Location: Kent
Contract Type: Permanent
Holidays: 25 days annual leave, plus Bank Holidays

Technical Resources are working with a dynamic and forward‑thinking fire and security solutions provider to recruit a 3rd Line IT Support & Infrastructure Specialist. This is an exciting opportunity for an experienced IT professional to take ownership of group‑wide infrastructure projects, support critical systems, and help shape the business's hybrid technology roadmap across multiple sites.

Key Responsibilities:

• Deliver 3rd line technical support across a group of seven UK locations.
• Lead and manage IT infrastructure projects, including disaster recovery, Microsoft 365 tenant migrations, and network configuration.
• Administer and maintain the full Microsoft 365 stack (Exchange, SharePoint, Teams, Entra ID, Azure & Azure Arc/Replication).
• Manage backup and recovery solutions (e.g. Arctera Backup Exec, Veeam).
• Support, monitor, and enhance server environments (physical and virtual).
• Work collaboratively with third‑party vendors and internal teams.
• Mentor 1st and 2nd line support engineers, providing technical guidance.
• IT security compliance (MFA, access control, vulnerability remediation).
• Ensure infrastructure reliability through proactive maintenance and thorough documentation.

Skills & Attributes:

• Proven analytical and troubleshooting ability at the 3rd line level.
• Close attention to detail with strong organisational skills.
• Excellent communication and interpersonal abilities.
• Independent, proactive work ethic with a collaborative mindset.
• Adaptability and eagerness to learn within a fast‑paced environment.

Essential Experience:

• Minimum 5 years in a senior IT support or infrastructure engineering role.
• In‑depth experience in troubleshooting across multi‑site environments.
• Strong grasp of ITIL frameworks and best practice service delivery.

Preferred Technical Knowledge:

• Windows Server OS
• Microsoft 365 administration – SharePoint, Azure, Exchange Online, Azure Arc
• Active Directory & Azure Entra ID
• Networking – TCP/IP, DNS, DHCP, IPSEC VPN, VLANs, BGP
• Cisco Meraki & Catalyst – switching, firewalls, wireless
• Hyper‑V virtualisation and replication

The Company Offers:

• Ongoing training and development opportunities.
• Support for professional accreditations and qualifications.
• A collaborative, inclusive workplace where every contribution is valued.
• Competitive salary and benefits package.
• Generous holiday entitlement.
• Company pension scheme.
• Medicash health plan and wellbeing support resources.
• Employee discounts and referral rewards.
• On‑site parking.