> Markdown version of [/jobs/ext/4596147-3rd-line-support-engineer](https://www.wearedevelopers.com/jobs/ext/4596147-3rd-line-support-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# 3rd Line Support Engineer

- **Company:** HartleyCo Ltd
- **Location:** Whitchurch, United Kingdom
- **Experience:** Experienced
- **Contract:** Temporary contract
- **Skills:** Microsoft Windows, Active Directory, Microsoft Antivirus, Microsoft Azure, Dynamic Host Configuration Protocol, Desktop Computing, Domain Name System (DNS), Hyper-V, System Center Configuration Manager, Windows Servers, Networking Basics, TCP/IP, Cloud Platform System, Microsoft InTune, Information Technology, Patch Management, Wsus, Vmware
- **Published:** November 6, 2026
- **Apply:** https://www.cv-library.co.uk/job/225801401/3rd-Line-Support-Engineer

## About the Role

* Previous experience in a 3rd Line IT Support, Infrastructure Support or Senior IT Support Engineer role
 * Strong hands-on experience with Active Directory, Entra ID and Microsoft 365 administration
 * Experience managing devices, policies and endpoint security through Microsoft Intune
 * Proven experience with patch management, including deploying updates and remediating vulnerabilities
 * Practical experience supporting Cyber Essentials compliance and implementing required security controls
 * Strong Windows Server and Windows 10/11 administration and troubleshooting skills
 * Good understanding of networking fundamentals, including DNS, DHCP and TCP/IP
 * Experience troubleshooting complex technical issues across Microsoft infrastructure environments
 * Ability to work independently and manage technical escalations
 * Strong communication, troubleshooting and documentation skills

Nice to Have:

 * Previous experience working within an MSP or supporting multiple client environments
 * Cyber Essentials Plus experience, including preparing environments for technical assessments
 * Experience with Windows Update for Business, WSUS or SCCM for patch management
 * Microsoft Defender, Conditional Access and security policy configuration
 * Azure infrastructure and hybrid Active Directory environments
 * VMware or Hyper-V virtualisation experience
 * Experience supporting infrastructure migrations, upgrades and security improvement projects

## Description

We're working with an IT services provider based in Bristol, who are looking for an 3rd Line IT Support Engineer to join their team on an initial 3 month contract.

They are looking for someone with strong M365 and cloud experience, particularly across Active Directory, Entra ID, Intune and Microsoft 365, alongside hands-on experience with patch management and Cyber Essentials compliance.

Responsibilities:

 * Provide 3rd line technical support, resolving complex incidents and escalations across client environments
 * Administer and troubleshoot Microsoft 365, Active Directory, Entra ID and Intune
 * Manage patching and software updates across Windows servers, desktops and other endpoints
 * Identify and remediate vulnerabilities, ensuring systems remain secure and compliant
 * Support Cyber Essentials compliance, implementing security controls and addressing gaps identified during assessments
 * Configure and maintain endpoint management, device compliance and security policies through Intune
 * Troubleshoot Windows Server, Group Policy, DNS, DHCP and general infrastructure issues
 * Manage user identities, access permissions and security policies across on-premises and cloud environments
 * Support infrastructure improvements, system upgrades and security-related projects
 * Maintain accurate technical documentation and provide support to 1st and 2nd line engineers where required