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Microsoft 365 Security Engineer @ Mayfair Tech Ltd

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About this role

Salary: £45,000 - 50,000 per year

Requirements

  • 2+ years of multi-tenant MSP experience
  • Entra ID administration, including app registrations, API permissions, admin consent, and single sign-on
  • Conditional Access and Intune policy design, testing, and rollout
  • Exchange Online security, including sign-in log review, inbox rule analysis, and message trace
  • PowerShell and Microsoft Graph scripting
  • Clear, professional communication with senior and non-technical clients
  • Right to work in the UK
  • Preferred: Mac management through an Apple MDM platform, ideally Addigy, including Apple Business Manager and automated device enrolment
  • Preferred: Azure resource administration, such as Key Vault, virtual machines, certificates, subscriptions, and role-based access
  • Preferred: SharePoint and Microsoft 365 migration experience
  • Preferred: Microsoft SC-300 or MS-102 certification
  • Preferred: Experience with Huntress, CIPP, or HaloPSA
  • Preferred: Exposure to regulated financial services clients
  • Cybersecurity and MSP experience of 2 years each are listed as preferred

Responsibilities

  • Set up and secure Microsoft 365 tenants for new and existing clients
  • Design, test, and roll out Conditional Access and Intune policies
  • Investigate suspicious sign-ins, compromised mailboxes, and email threats
  • Automate repetitive work using PowerShell and Microsoft Graph
  • Deliver migrations and projects while working directly with clients
  • Act as the technical escalation point for the service desk
  • Manage Huntress, CIPP, Intune, Defender, and backup platforms, and produce the monthly health report
  • Look after the Microsoft 365 tenants of our clients, balancing planned projects with day-to-day security work and collaborating with clients and our wider team

Technologies

  • AI
  • API
  • Azure
  • Support
  • Microsoft 365
  • PowerShell
  • Security
  • SharePoint
  • Office 365
  • Cloud

More

We are Mayfair Tech, a small team providing IT support, cybersecurity, and AI consultancy to family offices, private equity firms, and high-net-worth individuals. We help clients keep their systems secure and dependable while maintaining complete discretion, and value every team members contribution and voice. This is a full-time, permanent Microsoft 365 Security Engineer role, remote with occasional visits to our London office and London-based clients. We offer a salary of £45,000–£50,000 per year, depending on experience, and provide a laptop and equipment. We welcome applications from candidates who meet the essential requirements, even if they do not have every preferred qualification.

last updated 43 week of 2026

Skills

Entra ID administrationConditional AccessIntune policy designExchange Online securityMicrosoft Graph scriptingmulti-tenant MSP experienceright to work in the UKMac managementAddigyAzure resource administrationMS-102 certification

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