Senior M365 Messaging & Collaboration Architect

Proactive Appointments; City Of London; On-site; GBP 90,000 - 140,000; Full time

Job summary

Proactive Appointments is seeking a skilled M365 Messaging & Collaboration Architect to provide architectural leadership across the enterprise Microsoft 365 environment, including Exchange Online, Teams and Purview. The role combines architecture strategy with hands-on engineering guidance to deliver secure, scalable solutions across messaging and collaboration platforms.

You will define architectural roadmaps, set design standards, and work closely with Cyber Security teams to embed Zero Trust

Qualifications

• Experience designing Microsoft 365 messaging and collaboration architectures.
• Hands-on capability with Exchange Online, Teams and Purview.
• Security and governance experience in cloud environments.

Responsibilities

• Define strategic roadmap for Microsoft 365 messaging and collaboration services.
• Produce high-level and low-level solution designs for complex Microsoft 365 programmes.
• Act as Design Authority for messaging and collaboration solutions and oversee migrations.
• Review and validate designs for security and architectural standards.
• Lead engineering teams through complex implementations and challenges.
• Engage with senior stakeholders to align roadmaps with business objectives.

Skills

Microsoft 365

Exchange Online

Microsoft Teams

Microsoft Purview

Security architecture

Zero Trust

Design Authority

Proofpoint integration

Tools

Proofpoint

Job description

Proactive Appointments is seeking a skilled M365 Messaging & Collaboration Architect to provide architectural leadership across the enterprise Microsoft 365 environment, including Exchange Online, Teams and Purview. The role combines architecture strategy with hands-on engineering guidance to deliver secure, scalable solutions across messaging and collaboration platforms.

You will define architectural roadmaps, set design standards, and work closely with Cyber Security teams to embed Zero Trust