Specialist, IT Infrastructure Engineering

慨正橡扯; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Flexible working hours

Extensive induction program

Employee Assistance Program

Global Family Leave Policy

Job summary

慨正橡扯 is seeking a Senior IT Infrastructure Engineer to lead the engineering, implementation, and operational support of Microsoft 365, Azure, and Google Cloud Platform.

This role involves collaborating with architecture and security teams to deliver automated, secure solutions across cloud platforms. With a focus on resilience and operational efficiency, you will play a pivotal role in transforming our infrastructure.

Enjoy flexible working hours, extensive induction programs, and diverse inclusion practices within a global team.

Qualifications

• Extensive experience in cloud, workplace, and identity platforms engineering.
• Strong troubleshooting and problem-solving capability.
• Experience working in enterprise-scale environments.

Responsibilities

• Engineers and supports solutions across M365, Azure, GCP, and Identity.
• Ensures platforms and configurations are secure, resilient, and effective.
• Delivers and operates dashboard initiatives and platform improvements.

Skills

Microsoft 365 configuration and security

Azure cloud engineering

GCP engineering

Active Directory and Entra ID

Security configuration and resilience

PowerShell and IaC concepts

Job description

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 role

The Senior IT Infrastructure Engineer (M365, Azure, GCP & Identity) is responsible for the engineering, implementation, and operational support of Microsoft 365, Azure, Google Cloud Platform (GCP), and enterprise identity (AD/Entra).

The role delivers secure, standardised, and automated solutions, translating architectural designs, standards, and roadmaps into robust, scalable platform implementations and operational services.

Working as a senior technical expert within the engineering team, the role collaborates with Architecture, Security, Development, and Operations teams to ensure solutions are delivered, integrated, and operated effectively.

It embeds security, resilience, automation, and operability by implementation, driving consistency and optimisation across M365, Azure, GCP, and Identity platforms. Through engineering excellence, the role reduces risk, complexity, and manual effort, improves resilience and service stability, and supports cost-efficient platform operations.

What you will do

Engineers and supports solutions across M365, Azure, GCP, and Identity, ensuring platforms, tooling, interfaces, and configurations are secure, resilient, automated, and operationally effective.

• Microsoft 365 Platforms: Implementation, configuration, and support of collaboration and productivity services (inc. Teams, Exchange, SharePoint, OneDrive, Intune), including governance controls, security settings, and lifecycle activities
• Azure Cloud: Deployment and support of landing zones, subscriptions, connectivity, platform services, and governance controls aligned to architectural standards
• Google Cloud Platform (GCP): Implementation and operational support of project structures, networking, workload environments, and security configurations
• Identity & Access: Engineering and operation of Active Directory and Entra ID, including authentication, Conditional Access, privileged access, identity governance, and directory integration
• Cloud Security & Compliance: Implementation and maintenance of secure configurations, monitoring, logging, encryption, and policy enforcement across cloud and identity platforms
• Delivers and supports standardisation, automation, tooling, and consistency across cloud, workplace, and identity platforms

What we're looking for

1. Solution Engineering & Operation

• Implement and operate infrastructure and platform solutions aligned to architectures, standards, and patterns
• Build, configure, and operate end-to-end cloud, M365, and identity solutions
• Act as senior escalation point for engineering and operational issues

2. Security, Resilience & Operability

• Implement and operate secure-by-design configurations
• Ensure resilience, recoverability, monitoring, and operational readiness are delivered and sustained

3. Roadmap Execution

• Deliver and operate roadmap initiatives and platform improvements
• Support planning and execution of engineering and operational changes

4. Cross-Domain Collaboration

• Work with Architecture, Security, Development, and Infrastructure teams to deliver integrated solutions
• Ensure solutions are tested, transitioned, and fully operational

5. Vendor & Technology Engagement

• Work with vendors to support implementation, operation, and issue resolution
• Contribute to platform, tooling, and operational improvements

6. Operational Governance & Support

• Ensure solutions align to standards and are maintained through BAU lifecycle
• Support incident, problem, and continuous service improvement activities

7. Automation, Standardisation & Optimisation

• Implement and operate automation-first solutions
• Reduce manual effort, technical debt, and complexity
• Improve stability, consistency, and operational efficiency at scale

Operational Support

• Participate in an on‑call rota for priority incident support

Leadership & Behavioural Expectations

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

• Ownership & Execution: Delivers reliable, secure solutions end-to-end, translating design into high-quality implementation
• Technical Leadership: Acts as SME across cloud, M365, and identity, resolving complex technical challenges
• Collaboration & Influence: Works effectively across teams, contributing to design decisions and stakeholder outcomes
• Adaptability & Improvement: Responds to challenges while driving automation, optimisation, and clear communication

Qualification

• Extensive experience in engineering and supporting cloud, workplace, and identity platforms
• Strong expertise across:
  • Microsoft 365 configuration, administration, and security
  • Azure cloud engineering (deployments, governance, connectivity)
  • GCP engineering (projects, networking, security, operations)
  • Identity and access (Active Directory, Entra ID, authentication, access control)
  • Security configuration and resilience practices
  • Automation and operational tooling (PowerShell, scripts, IaC concepts)
• Strong troubleshooting and problem‑solving capability
• Experience working in enterprise‑scale environments

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 inclusion

• Inclusion 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 Plan
• Trained 60 (and growing) Colties to be Mental Health First Aiders
• Please 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.

Benefits

Our 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 network

• When 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.