3Rd Line Support Engineer

Experis; Manchester; On-site; GBP 86,715 - 95,940; Part time

Job summary

Experis is seeking an experienced 3rd Line Support Microsoft 365 Engineer (Messaging Specialist) for a 6-month contract based in Manchester, onsite. The role focuses on Exchange Online, mail flow, security, and hybrid messaging environments, acting as a senior escalation point for complex incidents.

The ideal candidate will have deep MS 365 expertise, strong governance, and hands-on administration of security platforms such as Proofpoint, ClearSwift, and encryption solutions.

Qualifications

• 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 email delivery/routing, security and DLP.
• Configure and support third‑party messaging security gateways and email protection platforms.

Responsibilities

• Act as senior technical escalation point for complex incidents, problems and service requests.
• Support regulatory/compliance requirements through secure email and information protection tech.
• Collaborate with Security Operations on phishing campaigns and email threats.

Skills

3rd line support

Microsoft 365

Exchange Online

Email security

DLP

Spam filtering

Phishing protection

Email routing

Proofpoint

ClearSwift

PGP encryption

Tools

Proofpoint

ClearSwift

PGP encryption

Job description

Role Title

3rd Line Support Engineer (Messaging Specialist)

Location

Manchester / fully onsite

Duration

6 initial months contract

Rate

£470 - £520

Clearance

BPSS required

Pay Setting

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.

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:
  • Email delivery and routing
  • Secure email encryption
  • Message hygiene and filtering
  • Anti‑spam and anti‑phishing policies
  • Data Loss Prevention (DLP)
  • False positives and quarantine management
  • 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:
  • Exchange Online
  • Exchange Hybrid
  • Exchange Online Protection (EOP)
  • Microsoft Defender for Office 365
  • Outlook and Outlook connectivity
  • Mail flow management and transport rules
  • 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.