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Contract

3rd Line Support Engineer

Experis
Manchester
money-bag £470 - £520/day
Posted: 17 July 2026 (3 weeks ago)
Closing date: 16 August 2026
Ref: 225386300

Role Title: 3rd Line Support Engineer (Messaging Specialist)
Location: Manchester / fully onsite
Duration: 6 initial months contract
Rate -470 - -520
CLearance: BPSS required
MUST BE PAYE THROUGH UMBRELLA

Role Description:


Job Description - Workplace Engineer - 3rd Line Support Microsoft 365 Engineer (Messaging Specialist)

We are seeking an experienced 3rd Line Support Microsoft 365 Engineer with strong expertise across the Microsoft 365 ecosystem and a specialization in Messaging and Collaboration Services. The successful candidate will act as a senior technical escalation point for complex incidents, problems, and service requests, providing expert-level support for Microsoft Exchange Online, mail flow, security, compliance, and hybrid messaging environments.

Your skills and experience

  • Provide expert 3rd line support for enterprise messaging platforms
  • Manage and troubleshoot complex email security, encryption, and compliance solutions.
  • Investigate and resolve issues relating to:

o Email delivery and routing
o Secure email encryption
o Message hygiene and filtering
o Anti-spam and anti-phishing policies
o Data Loss Prevention (DLP)
o False positives and quarantine management
o Secure mail exchange with external partners
* Configure and support third-party messaging security gateways and email protection platforms.
* Work with Security Operations teams to investigate phishing campaigns, email spoofing attempts, malware incidents, and email-based threats.
* Support regulatory and compliance requirements through secure email and information protection technologies.

Microsoft 365 Expertise & SharePoint Skills
* Strong hands-on experience with Microsoft 365 suite, including SharePoint Online, Teams, OneDrive, and Exchange.
* Expertise in M365 administration, configuration, and tenant management.
* Knowledge of security, compliance, and governance in M365 environments.
* Experience with Sharepoint site architecture, permissions, content management, and document libraries
* Expert-level knowledge of:
o Exchange Online
o Exchange Hybrid
o Exchange Online Protection (EOP)
o Microsoft Defender for Office 365
o Outlook and Outlook connectivity
o Mail flow management and transport rules
o SMTP and email routing
Hands-on administration and support of enterprise email security and governance platforms, including:
* Proofpoint -Mail gateway and security
* ClearSwift -Routing, DLP and content control
* Egress & PGP - Encryption and partner mail

If you receive suspicious outreach claiming to be from us, please contact us via the ManpowerGroup website.

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