IT manager, enterprise infrastructure services & cloud

Colt provides network, voice and data centre services to thousands of businesses around the world, allowing them to focus on delivering their business goals instead of the underlying infrastructure.Why we need this roleThe Manager IT Infrastructure (M365, Azure, GCP, Windows & VDI) is responsible for the end-to-end delivery, operation, and performance of critical enterprise platforms, including Microsoft 365, Azure, GCP, Windows Server, VDI, and Citrix services.The role leads a team of approximately 15 engineers, ensuring the secure, stable, and efficient operation of business-critical services, while delivering roadmap initiatives, platform improvements, and automation outcomes aligned to architecture and strategy.Working closely with Architecture, Security, Development, and wider Operations teams, the role ensures solutions are delivered, integrated, and operated at scale, with strong focus on service reliability, security, cost efficiency, and user experience.The role embeds operational excellence, resilience, automation, and governance, driving standardisation and continuous improvement across cloud, workplace, and identity platforms. Through strong leadership and execution, it reduces risk, complexity, and operational overhead, while improving service performance, stability, and cost control.What you will doLeads engineering and operational delivery across M365, Azure, GCP, Windows, and VDI platforms, ensuring services, tooling, and integrations are secure, resilient, scalable, and operationally effective.Microsoft 365 Platforms: Ownership of collaboration and productivity services (Teams, Exchange, SharePoint, OneDrive, Intune), including service performance, governance, security, lifecycle, and user experience.Azure & GCP Cloud: Operational management of cloud platforms including landing zones, subscriptions/projects, connectivity, platform services, and governance controls.Windows & End User Platforms: Management of Windows Server and end-user compute platforms, including build, patching, configuration, and lifecycle.VDI & Citrix: Delivery and operation of virtual desktop environments, ensuring performance, availability, and user experience.Identity & Access: Operational ownership of Active Directory and Entra ID, including authentication, Conditional Access, privileged access, and directory services.Cloud Security & Compliance: Enforcement of secure configurations, monitoring, logging, and policy controls across all platforms.Leads delivery of standardisation, automation, tooling, and operational consistency across cloud and workplace platformsKey AccountabilitiesService Delivery, Engineering & OperationsLead the build, delivery, and operation of critical infrastructure services across M365, cloud, Windows, and VDIEnsure platforms meet availability, performance, and service level expectationsAct as senior escalation point for major incidents and service issuesSecurity, Resilience & Service StabilityEnsure secure-by-design and operational security controls are implemented and maintainedOwn resilience, recoverability, monitoring, and service continuity across platformsRoadmap Delivery & Continuous ImprovementDeliver platform roadmaps and improvement initiatives in line with architectural directionDrive continuous improvement in automation, efficiency, and service qualityTeam Leadership & Capability DevelopmentLead and develop a high-performing engineering team (FTE & contingent)Build capability across cloud, workplace, and identity domainsEnsure effective workload management, prioritisation, and deliveryCross-Domain Collaboration & IntegrationWork with Architecture, Security, Development, and Operations teams to deliver integrated servicesEnsure solutions are fully transitioned, supported, and operationally sustainableVendor & Service ManagementEnsure service performance, delivery quality, and issue resolutionOperational Governance, Cost & OptimisationEnsure services are aligned to standards and governed through full lifecycleManage operational cost, capacity, and efficiencyDrive automation, standardisation, and reduction of technical debt and complexity.Leadership & Behavioural ExpectationsOperates as a senior leader with strong ownership, accountability, and delivery focus.Ownership & Accountability: Owns service outcomes across availability, security, and costLeadership & Team Development: Builds, leads, and develops high-performing teamsExecution & Delivery: Drives consistent, high-quality service and platform deliveryCollaboration & Influence: Works effectively across domains and stakeholdersAdaptability & Improvement: Responds to operational challenges while driving automation and optimisationWhat we’re looking forEssentialExtensive experience leadinginfrastructure engineering and operations teams in enterprise environmentsStrong expertise across Microsoft 365 and workplace services, Azure and GCP cloud operations, Windows Server, VDI/Citrix, and identity (Active Directory, Entra), with robust knowledge of security, resilience, operational controls, and automation tooling.Proven ability to manage business-critical services at scaleStrong stakeholder, vendor, and team leadership capability Excellent operational, analytical, and decision-making skillsSoft Skills & Behavioural CompetenciesOwnership & Accountability: Takes responsibility for delivering outcomes and driving technical excellence.Leadership & Influence: Ability to inspire, motivate, and guide team members toward achieving goals.Communication: Clear and concise verbal and written communication skills for technical and non-technical audiences.Problem-Solving: Strong analytical skills to troubleshoot complex issues and implement effective solutions.Collaboration: Skilled at building relationships and working effectively across teams and stakeholders.Adaptability: Comfortable managing priorities in a fast-paced, evolving environment.Continuous Improvement Mindset: Proactive in identifying opportunities for process and technology enhancements.QualificationsBachelor’s degree in Computer Science, Information Technology, or equivalent experience.Relevant certifications (e.g., Microsoft Certified: Azure Solutions Architect, Citrix Certified Expert, VMware VCP, Google Cloud Professional Architect) preferred.What we offer you:Looking to make a mark?At Colt, you’ll make a difference. Because around here, we empower people. We don’t tell you what to do.Instead, we employ people we trust, who come together across the globe to create intelligent solutions.Our global teams are full of ambitious, driven people, all working together towards one shared purpose: to put the power of the digital universe in the hands of our customers wherever, whenever and however they want.We give our people the opportunity to inspire and lead teams, and work on projects that connect people, cities, businesses, and ideas. We want you to help us change the world, for the better.Diversity and inclusionInclusion and valuing diversity of thought and experience are at the heart of our culture here at Colt. From day one, you’ll be encouraged to be yourself because we believe that’s what helps our people to thrive. We welcome people with diverse backgrounds and experiences, regardless of their gender identity or expression, sexual orientation, race, religion, disability, neurodiversity, age, marital status, pregnancy status, or place of birth.Most recently we have:Signed the UN Women Empowerment Principles which guide our Gender Action PlanTrained 60 (and growing) Colties to be Mental Health First AidersPlease speak with a member of our recruitment team if you require adjustments to our recruitment process to support you. For more information about our Inclusion and Diversity agenda, visit our DEI pages.BenefitsOur benefits support you through all parts of life, for both physical and mental health.Flexible working hours and the option to work from home.Extensive induction program with experienced mentors and buddies.Opportunities for further development and educational opportunities.Global Family Leave Policy.Employee Assistance Program.Internal inclusion & diversity employee networks.A global networkWhen you join Colt you become part of our global network. We are proud of our colleagues and the stories and experience they bring – take a look at ‘Our People’ site including our Empowered Women in Tech.