M365 Architect – 11289HS2

Proactive.IT Appointments Limited; City Of London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A technology recruitment agency is seeking a senior M365 Architect to lead the design and administration of Microsoft services, including Exchange and Intune. Candidates must have expert knowledge in Microsoft 365 services, a strong background in Exchange Server administration, and proficiency in PowerShell scripting. This role involves ensuring reliability, scalability, and security of collaboration platforms, with a day rate of £600 – 725. Location: City of London.

Qualifications

• Expert knowledge of Microsoft 365 services including Exchange Online, Teams, and SharePoint.
• Deep expertise in Microsoft Exchange Server administration and troubleshooting.
• Proven experience with Exchange Hybrid Deployments and migrations.
• Hands-on experience with Microsoft Intune for MDM/MAM.
• Advanced PowerShell scripting for automation and reporting.

Responsibilities

• Act as the technical lead for messaging and collaboration initiatives.
• Design, engineer, and implement Exchange and Microsoft 365 platforms.
• Administer and optimise Microsoft 365 services, including Exchange Online.
• Implement and maintain email security controls.
• Provide Tier-3 technical support for complex issues.

Skills

Microsoft 365 services

Microsoft Exchange Server 2016/2019

PowerShell scripting

Email security protocols

Azure Active Directory

Microsoft Intune

Hybrid deployments

DNS knowledge

Job description

M365 Architect

11289HS2
£600 – 725 per day

Inside IR35

This is a senior, hands-on technical role responsible for the design, implementation, optimisation, and administration of enterprise-level messaging, collaboration, and mobile device management platforms. The successful candidate will act as the technical lead for Microsoft Exchange, Microsoft 365, Intune, and associated technologies, driving large-scale transformation and modernisation initiatives across the organisation.

You will work closely with architects, project managers, and global stakeholders to deliver secure, scalable, and resilient collaboration services that meet the bank’s operational and regulatory standards.

Key Responsibilities

• Act as the technical lead for messaging, collaboration, and mobility initiatives, ensuring timely, high-quality delivery.
• Design, engineer, and implement Exchange (On-Prem and Online), Microsoft 365, and Intune platforms.
• Develop and manage hybrid configurations and migration strategies between on-premises and cloud environments.
• Administer and optimise Microsoft 365 services, including Exchange Online, Teams, SharePoint Online, OneDrive, and the Compliance Centre.
• Implement and maintain email security controls (SPF, DKIM, DMARC, DLP, ATP).
• Ensure service reliability, scalability, and compliance across messaging and collaboration platforms.
• Provide Tier-3 technical support and act as the escalation point for complex issues.
• Deliver engineering-level implementation as part of transformation and operational programmes.
• Maintain comprehensive documentation, standards, and system diagrams.
• Collaborate cross-functionally on security, networking, and integration activities.
• Contribute to the strategic roadmap, ensuring alignment with enterprise architecture and continuous improvement goals.

Essential

• Expert knowledge of Microsoft 365 services: Exchange Online, Teams, SharePoint Online, OneDrive for Business, Compliance Centre.
• Deep expertise in Microsoft Exchange Server 2016/2019 administration and troubleshooting.
• Proven experience with Exchange Hybrid Deployments, coexistence, migrations, and hybrid mail flow.
• Hands-on experience with Microsoft Intune / Endpoint Manager for MDM/MAM.
• Proficiency in Azure Active Directory, Conditional Access, and Identity Federation (ADFS, Azure AD Connect).
• Advanced PowerShell scripting for automation, reporting, and administration.
• Strong understanding of email security protocols (SPF, DKIM, DMARC, TLS) and anti-phishing controls.
• Solid knowledge of DNS, certificates, and network fundamentals related to messaging.

M365 Architect

Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for interview will be contacted.

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