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Technical Resources Ltd

3rd Line IT Support & Infrastructure Specialist

On site

Kent, United kingdom

Full Time

16-01-2026

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Skills

Communication Adaptability Firewalls Microsoft 365 Networking Attention to detail Training Windows Azure Active Directory TCP/IP Windows Server

Job Specifications

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 (eg 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 (2012-2025)
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.

About the Company

The market leaders in technical recruitment for Telecoms and Fire & Security. Having been established for over two decades, we help businesses of all sizes find top talent for both contract and permanent positions across the UK. With a commitment to quality, we conduct thorough background checks and prioritise candidates with great references for the best job opportunities, while our sector-specific consultants provide specialised services. These services include Permanent Recruitment, Contractor Recruitment, and Client Su... Know more