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# 3rd Line Support Engineer

- **Company:** Constant Recruitment Ltd
- **Location:** Stowting Common, UK
- **Salary:** £40,000.0 - £45,000.0
- **Contract:** Permanent contract
- **Skills:** Proxmox, Microsoft Windows, Active Directory, Backup Devices, Cloud Computing, Dynamic Host Configuration Protocol, Disaster Recovery, Domain Name System (DNS), Multi-Factor Authentication, Hyper-V, Virtual Private Networks (VPN), Microsoft Office, Windows Servers, Routing, Azure Active Directory, Virtual Local Area Networks, Firewalls (Computer Science), Microsoft InTune, Deployment Automation, Server Operating Systems & Platforms, Vmware
- **Published:** August 22, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5852365964

## About the Role

* Strong 3rd Line or senior 2nd/3rd Line experience within an MSP
 * Broad Microsoft infrastructure and Microsoft 365 knowledge
 * Strong Windows Server and Active Directory experience
 * Good practical knowledge of Microsoft Entra ID
 * Experience supporting Microsoft Intune and modern device management
 * Strong networking knowledge including VLANs, switching, routing and wireless
 * Experience administering and troubleshooting firewalls and VPNs
 * Experience supporting virtualised server environments
 * Good understanding of backup, disaster recovery and security technologies
 * Confidence investigating unfamiliar or complex technical problems
 * Strong customer-facing communication skills
 * The ability to work independently and take ownership of technical issues
 * Full UK driving licence
 * Comfortable travelling to customer sites across Kent when required
 * Willingness to undergo an enhanced DBS check, provided by the company, as some customers include schools and colleges

## Description

* Acting as a senior technical escalation point for complex client issues
 * Troubleshooting Microsoft 365, Entra ID and hybrid environments
 * Supporting and administering Windows Server and Active Directory environments
 * Managing Microsoft 365 environments across multiple customer tenants
 * Supporting Microsoft Intune, Autopilot and endpoint management
 * Troubleshooting networking including VLANs, switching, routing, DNS, DHCP and wireless
 * Configuring and troubleshooting firewalls, VPNs and security policies
 * Supporting virtualised environments including Hyper-V, VMware and Proxmox
 * Managing backup, disaster recovery and business continuity solutions
 * Supporting endpoint security, MFA and EDR technologies
 * Diagnosing complex infrastructure and performance issues
 * Taking ownership of technical problems through to resolution
 * Supporting and mentoring less experienced engineers when required
 * Producing clear technical documentation and improving internal knowledge
 * Working directly with customers to explain technical issues and recommendations
 * Delivering and supporting infrastructure and cloud projects
 * Attending customer sites where hands-on technical work is required

Technologies:

 * Active Directory
 * Cloud
 * Hyper-V
 * LESS
 * Microsoft 365
 * Microsoft Intune
 * Security
 * VMware
 * Windows
 * Office 365
 * Firewall
 * Support
 * Network


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