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# 3rd Line Engineer

- **Company:** McGregor Boyall Associates Ltd.
- **Location:** UK
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Microsoft Azure, Microsoft Online Services, Dynamic Host Configuration Protocol, Domain Name System (DNS), Windows Servers, Networking Basics, Remote Access Technology, Microsoft SharePoint, TCP/IP, Software Troubleshooting, Microsoft InTune
- **Published:** October 8, 2026
- **Apply:** https://www.totaljobs.com/job/3rd-line-engineer/mcgregor-boyall-associates-limited-job108091775

## About the Role

* Proven experience in a 3rd Line Support Engineer or Senior Infrastructure Engineer role.
 * Strong Microsoft 365 knowledge including Exchange Online, Teams, SharePoint, Entra ID and Intune.
 * Experience supporting Azure environments, Windows Server and Active Directory.
 * Solid understanding of networking fundamentals including DNS, DHCP, TCP/IP and VPN technologies.
 * Good understanding of endpoint management and IT security best practices.
 * Experience working within ITIL-led service environments and using ITSM platforms.
 * Strong troubleshooting, analytical and problem-solving skills.
 * Excellent written and verbal communication skills with a customer-focused approach.

## Description

I am looking for an experienced 3rd Line Support Engineer to join a growing Managed Services team, acting as the senior escalation point for complex technical issues across a diverse client base.
This position combines deep technical troubleshooting with proactive service improvement, customer engagement, technical leadership and mentoring. You'll play a key role in resolving high-impact incidents, conducting technical health checks and audits, and helping customers get the most from their Microsoft cloud and infrastructure environments., * Act as the final escalation point for complex technical incidents and service requests.

 * Lead major incident investigations and root cause analysis activities.
 * Deliver technical audits, health checks and best-practice assessments across client environments.
 * Support and maintain Microsoft 365, Azure, Windows Server and Active Directory platforms.
 * Identify technical risks and recommend improvements to increase resilience, security and performance.
 * Produce clear technical documentation and customer-facing reports.
 * Provide technical guidance and mentoring to 1st and 2nd Line Engineers.
 * Contribute to service improvement initiatives, operational standards and knowledge sharing.