Job Description :

The 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 do :

- Leads 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 platforms.

Key Accountabilities :

1. Service Delivery, Engineering & Operations :

- Lead the build, delivery, and operation of critical infrastructure services across M365, cloud, Windows, and VDI.

- Ensure platforms meet availability, performance, and service level expectations.

- Act as senior escalation point for major incidents and service issues.

2. Security, Resilience & Service Stability :

- Ensure secure-by-design and operational security controls are implemented and maintained.

- Own resilience, recoverability, monitoring, and service continuity across platforms.

3. Roadmap Delivery & Continuous Improvement :

- Deliver platform roadmaps and improvement initiatives in line with architectural direction.

- Drive continuous improvement in automation, efficiency, and service quality.

4. Team Leadership & Capability Development :

- Lead and develop a high-performing engineering team (FTE & contingent).

- Build capability across cloud, workplace, and identity domains.

- Ensure effective workload management, prioritisation, and delivery.

5. Cross-Domain Collaboration & Integration :

- Work with Architecture, Security, Development, and Operations teams to deliver integrated services.

- Ensure solutions are fully transitioned, supported, and operationally sustainable.

6. Vendor & Service Management :

- Ensure service performance, delivery quality, and issue resolution.

7. Operational Governance, Cost & Optimisation :

- Ensure services are aligned to standards and governed through full lifecycle.

- Manage operational cost, capacity, and efficiency.

- Drive automation, standardisation, and reduction of technical debt and complexity.

Leadership & Behavioural Expectations :

Operates as a senior leader with strong ownership, accountability, and delivery focus.

- Ownership & Accountability : Owns service outcomes across availability, security, and cost.

- Leadership & Team Development : Builds, leads, and develops high-performing teams.

- Execution & Delivery : Drives consistent, high-quality service and platform delivery.

- Collaboration & Influence : Works effectively across domains and stakeholders.

- Adaptability & Improvement : Responds to operational challenges while driving automation and optimisation.

What we are looking for :

Essential :

- Extensive experience leading infrastructure engineering and operations teams in enterprise environments.

- Strong 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 scale.

- Strong stakeholder, vendor, and team leadership capability.

- Excellent operational, analytical, and decision-making skills.

Soft Skills & Behavioural Competencies :

- Ownership & 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.

Qualifications :

- Bachelors 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.

Whats it like to work at Colt?

At Colt, youll make an impact. We hire people we trust - people who are empowered and collaborate to create smart, innovative solutions.

Our global teams are driven and ambitious, united by shared goals. We offer opportunities to lead, inspire, and work on projects that connect people, cities, businesses, and ideas. Together, we aim to make the world better.

Inclusion and respect for diverse perspectives are at the heart of our culture. From day one, youll be encouraged to be yourself - because we believe thats how people thrive. We welcome individuals from all backgrounds and experiences, regardless of gender identity or expression, sexual orientation, race, religion, disability, neurodiversity, age, marital or pregnancy status, or place of birth.

Values and Behaviours :

We have four core values that describe what we stand for: We know people matter; We always find a better way; We win together; and We can change the world.

These are underpinned by three behaviours that describe how Colties show up day to day :

- Grow : We see challenge as an opportunity and never stop learning from our successes and failures. We seek different perspectives to continually improve.

- Align : We ensure our priorities align to business goals and we join up and collaborate across teams, functions and regions to achieve lasting impact.

- Deliver : Colleagues at all levels show initiative, take personal responsibility and make decisions to drive results. We are empowered to contribute our best.

Benefits :

Our benefits support you through all parts of life. For both physical and mental health, for you and your family :

- 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 networks including Women+@Colt.