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# 3rd Line Support Engineer

- **Company:** ECS Recruitment Group
- **Location:** Aldershot, UK (Remote available)
- **Experience:** Expert
- **Salary:** £45,000.0 - £55,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Cyber Security, Virtual Private Networks (VPN), Local Security Policy, Microsoft Copilot, Microsoft SharePoint, Firewalls (Computer Science), Microsoft InTune
- **Published:** October 22, 2026
- **Apply:** https://www.hiredonline.co.uk/jobs/225750903-3rd-line-support-engineer/ecs-resource-group-ltd

## About the Role

* At least 3 years of hands-on Microsoft 365 administration
 * Senior support, systems administration or MSP experience
 * Hands-on cyber security work, such as endpoint protection, alert response, patching and backup
 * Experience with Kaseya tools or similar RMM/PSA platforms (e.g. Datto, Autotask, IT Glue, ConnectWise, NinjaOne)
 * Strong Windows and business IT troubleshooting
 * Confidence dealing with customers, and good documentation habits

Nice to have
Intune, Defender, Microsoft 365 Lighthouse, Purview, Copilot administration, firewalls, switches and VPNs, and relevant Microsoft or security certifications.

## Description

You'll be the technical escalation point for a range of business customers. Your work will include:

 * Managing Microsoft 365 tenants: users, groups, licences, mailboxes, security settings and access controls
 * Working across the M365, Exchange, Teams and SharePoint admin centres and Entra ID
 * Setting up and supporting MFA, conditional access, and joiner, mover and leaver processes
 * Running endpoint security, patching, backup and monitoring, and responding to security alerts
 * Onboarding new customers, including discovery, tenant reviews, documentation and setup
 * Improving internal processes and technical standards