Infrastructure and Security Lead

Salary: £60,000 - 60,000 per year

Requirements:

• Hands-on experience with Microsoft Azure in a production environment, including VMs, networking, backup and cost management
• Deep knowledge of Microsoft 365 security, including Conditional Access, MFA, Microsoft Defender for Endpoint, Microsoft Defender for Office 365 and Intune
• Solid networking skills, including firewalls, VLANs, wireless, VPNs and managing multi-site network estates
• Experience in an MSP or multi-client, multi-tenant environment
• A security-first mindset with experience of incident triage and response
• Ability to work autonomously, own problems end to end, and communicate clearly with technical and non-technical audiences
• Comfort being the most senior technical voice on an account, making decisions, documenting them and standing behind them
• Experience with NHS DSPT, Cyber Essentials or ISO 27001 is advantageous
• Experience with UniFi, FortiGate or similar network platforms is advantageous
• Experience with RMM platforms and PowerShell or Graph API automation is advantageous
• Experience in the care or health sector, or with clients handling sensitive personal data, is advantageous
• Willingness to obtain DBS clearance is advantageous

Responsibilities:

• Manage, monitor and optimise the Microsoft 365 environment
• Own network infrastructure across all sites, including firewalls, switches, access points and VPNs
• Plan and deliver a network standardisation programme to bring a mixed estate onto a common, supportable platform
• Own the security baseline across a large multi-tenant Microsoft 365 estate, including Conditional Access, MFA, Microsoft Defender for Endpoint and Defender for Office 365
• Handle security alerting, incident triage and response, acting as technical lead on cyber security incidents
• Handle complex escalations from the helpdesk and provide technical sign-off on high-risk changes
• Lead the technical delivery of infrastructure projects, including new site onboarding and migrations
• Liaise with third-party vendors, including Microsoft, ISPs and network vendors
• Support NHS DSPT and Cyber Essentials compliance reviews and remediation across the estate

Technologies:

• API
• Azure
• FortiGate
• Support
• Microsoft 365
• Network
• Office 365
• PowerShell
• Security
• Cloud

More:

We are a specialist managed IT services provider focused on Microsoft 365, Azure, endpoint management and cybersecurity. We work with clients in the care, healthcare and professional services sectors. Our approach is direct, technically rigorous and built around long-term client relationships rather than volume. This is an office-based role in Leatherhead/Woking, with the option for hybrid working in the future. It offers genuine technical ownership of a large, multi-site estate, a substantial network standardisation programme and a significant site onboarding pipeline, alongside training, four paid exams per year, a pension and 22 days of annual leave.

last updated 31 week of 2026