Group IT Systems & Infrastructure Manager

Posted 11 hours 27 minutes ago by Concept Resourcing

£75,000 - £76,000 Annual
Permanent
Not Specified
I.T. & Communications Jobs
Buckinghamshire, Milton Keynes, United Kingdom, MK1 1
Job Description

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 life cycle, 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 (eg, 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 (eg, 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