Head of O365 services

Every minute of every day, Smiths Detection’s threat detection and security screening technology helps to protect people and infrastructure, making the world a safer place. 

Smiths Detection is a global leader in the development, manufacture and management of security and detection solutions designed to make the world a safer place. Our technology provides threat detection and screening solutions for customers in our key markets: aviation, ports and borders, defence, and urban security.

Our expertise spans 21 global offices, seven manufacturing sites and five R&D centres, with a global network of 3,500 dedicated colleagues contributing towards over 40 years at the frontline of advances in safety and security.  

This results in careers built on variety and the opportunity to work on a range of state-of-the-art solutions, where you can develop your knowledge and experience every day.

Job Purpose:

The Head of O365 Services is responsible for the architecture, delivery, security, and operational excellence of the company’s Microsoft 365 ecosystem. This role provides both strategic direction and hands‑on technical expertise across O365, Exchange Online, SharePoint Online, Teams & telephony, Intune, Microsoft Defender, Purview, and Entra ID.
The position ensures reliable and secure end‑user services globally while leading a team that manages day‑to‑day tickets, escalations, service requests, and operational activities.

Duties:

• Lead end‑to‑end design, administration, and optimization of Microsoft 365 services including Exchange Online, SharePoint Online, Teams, OneDrive, and Power Platform.
• Manage and enhance identity and access management using Entra ID, enforcing conditional access, MFA, lifecycle workflows, and privileged identity management.
• Oversee mobile device and application management through Intune including Windows, iOS, Android, and compliance policies.
• Manage Microsoft Defender XDR and Purview compliance, ensuring alignment with corporate security policies, data governance, DLP, retention, and insider‑risk requirements.
• Own Teams telephony, call flows, PSTN integration, SBC management, and vendor relationships supporting enterprise voice.
• Provide hands‑on troubleshooting for complex escalations related to O365 services, authentication, mail flow, collaboration tools, and security alerts.
• Ensure O365 service health, monitoring, reporting, ticket resolution, and adherence to SLAs.
• Define standards, operational runbooks, governance models, and best practices for Microsoft 365 service delivery.
• Guide and mentor the O365 operations team, ensuring skill development, knowledge growth, and high‑quality support.
• Coordinate with Cybersecurity, Network, Cloud, Application Support, and PMO teams to ensure integrated and secure service delivery.
• Manage license optimization, cost analysis, service configurations, and tenant‑level settings.
• Ensure compliance with internal IT policies, regulatory frameworks, and audit requirements.
• Contribute to Microsoft 365 roadmap planning, modernization efforts, and new feature deployment.

Technical Knowledge, Skills and Abilities:

Education & Experience

• Bachelor's degree in Information Systems, Computer Science, or equivalent.
• 10+ years of Microsoft 365 administration and infrastructure experience.
• Relevant certifications preferred (Microsoft 365 Certified: Enterprise Administrator Expert, Security Administrator, Identity & Access Administrator, or Messaging Administrator).

Core Expertise

Deep understanding of Microsoft 365 architecture, administration, and best practices.

Expertise with:

• Exchange Online (transport rules, mail flow, migrations, hybrid)
• SharePoint Online (sites, permissions, hub architecture, governance)
• Teams  (Conferencing, Rooms, Groups, Channels)
• Entra ID (IAM, conditional access, PIM, app registrations, SSO)
• Intune (compliance, configuration profiles, app deployment, Autopatch, Autopilot)
• Defender XDR (Defender for Office 365, Endpoint, Identity, Cloud Apps)
• Purview compliance (DLP, retention, eDiscovery, data lifecycle)

Leadership & Technical Skills

• Proven team leadership and engineering management experience.
• Advanced troubleshooting across the M365 ecosystem.
• Strong communication and stakeholder collaboration abilities.
• Excellent problem-solving and analytical skills.
• Vendor management and vendor relationship experience.

Join us and we’ll help build your career, with excellent training and opportunities for career growth across the business, both locally and globally. You’ll experience an inclusive environment, with strong leadership and a focus on safety and wellbeing. You’ll also have the flexibility to choose from a wide range of benefits to suit your lifestyle, offering you and your family support from a health and wellbeing, financial and lifestyle perspective.

Join us and work for a world-leader, with the benefits and training to reward your dedication and skills. Be part of a team where we are making the world a safer place.

We believe that different perspectives and backgrounds are what make a company flourish. All qualified applicants will receive equal consideration for employment regardless of color, religion, sex, sexual orientation, gender identity, national origin, economic status, disability, age, or any other legally protected characteristics. We are proud to be an inclusive company with values grounded in equality and ethics, where we celebrate, support, and embrace diversity.

At no time during the hiring process will Smiths Detection, nor any of our recruitment partners ever request payment to enable participation – including, but not limited to, interviews or testing. Avoid fraudulent requests by applying jobs directly through our career’s website.