Group IT Systems & Infrastructure Manager

Group IT Systems and Infrastructure Manager – Hybrid (UK-wide travel)
Location: Hybrid, with travel across UK office locations
Function: ICT Infrastructure & Security Assurance
Reports to: Group CIO
Clearance: Must be eligible for BPSS and SC Clearance

Are you ready to shape the IT backbone of a rapidly growing, transformation-focused organisation? We’re looking for an experienced Group IT Systems and Infrastructure Manager to lead the development, integration, and operational management of enterprise-wide IT systems during a time of significant expansion and change.

About the Organisation

This fast-scaling, private equity-backed group delivers secure, critical network and ICT managed services to UK Critical National Infrastructure sectors-ranging from healthcare and defence to industrial and government. With recent acquisitions and further growth on the horizon, the group is building a new brand and unified IT architecture to support its long-term strategy.

You’ll join a newly formed internal support and systems team and play a key role in delivering a robust, secure, and compliant IT infrastructure aligned to the Group’s technology roadmap-designed to enable collaboration, operational efficiency, and secure digital transformation.

Role Overview

This hands-on, strategic role requires a proven leader with experience in complex Microsoft 365 tenant environments and enterprise IT systems. You’ll be responsible for implementing and managing a Group-wide infrastructure built on Microsoft’s cloud and hybrid technologies, integrating systems from acquired businesses, and maintaining operational excellence.

You’ll be the driving force behind a new, greenfield Microsoft O365 tenancy and ensure successful integration of multiple domains into a cohesive platform that supports productivity, governance, and collaboration across the business.

Key Responsibilities

Systems Strategy & Planning

• Define and implement the Group IT roadmap in alignment with business strategy

• Assess existing systems and prioritise technology initiatives and projects

• Allocate resources and track progress with internal and external stakeholders

Microsoft 365 Tenant Integration

• Build and manage a Group-wide M365 tenancy across multiple domains

• Standardise platform configuration and enforce governance and security policies

• Enable seamless collaboration, identity and access management, and application integration

• Manage third-party applications such as Sage HR, Sage 200, Concur, HubSpot and D365 CRM

Integration, Migration & Transformation

• Lead integration of IT platforms from acquired businesses into the Group infrastructure

• Coordinate secure and compliant data migrations and system cutovers

• Optimise platform performance, simplify collaboration and reduce duplication

Operations & Support

• Ensure the stability, security, and efficiency of day-to-day IT operations

• Oversee troubleshooting, upgrades, and BAU system administration

• Manage MSPs and other vendors to meet SLAs and performance targets

Compliance & Risk Management

• Enforce policies that support regulatory compliance and IT security

• Develop and test Business Continuity and Disaster Recovery plans

• Monitor risk, conduct audits, and implement remediation actions as needed

Project & Budget Management

• Lead IT projects through their lifecycle, including scoping, budgeting and delivery

• Track project performance using KPIs and provide actionable insights to senior leadership

• Report against OpEx and CapEx budgets, ensuring effective use of resources

Stakeholder Engagement & Training

• Work closely with stakeholders in HR, Finance, and Service Delivery to align systems with needs

• Provide training and adoption support for new systems and processes

• Champion innovation, continuous improvement, and digital enablement across the organisation

Experience & Skills Required

• 5+ years in IT systems/infrastructure management, preferably in MSP or systems integrator environments

• In-depth experience administering and configuring Microsoft 365 tenants and Azure Active Directory (Entra ID)

• Strong understanding of Exchange Online, SharePoint, Teams, OneDrive, and cross-domain collaboration

• Proven track record in IT systems integration, governance, and security

• Familiar with ITIL, DR/BCP frameworks, and compliance standards (e.g., ISO 22301, ISO 27031)

• Hands-on with endpoint security, MDM, MFA, compliance policies, and Power Platform (Power BI, Power Automate)

• Excellent project management, communication and stakeholder engagement skills

• Comfortable working in a high-change, fast-paced environment

Qualifications & Clearance

• Degree in IT, Computer Science or related field (or equivalent experience)

• Industry certifications (e.g., ITIL) are desirable

• Must have the right to live and work in the UK

• Full UK driving licence

• Able to obtain BPSS and SC clearance

Why Apply?

• Play a pivotal role in shaping and managing the IT foundation of a national infrastructure-focused organisation

• Lead high-impact, cross-functional transformation projects

• Enjoy autonomy, flexibility, and the ability to influence at all levels

• Work in a newly formed team with a mandate to build from the ground up

• Hybrid working with UK-wide engagement