Head of Windows Enterprise

Location: London, England, United Kingdom

Department: Technology

Workplace: hybrid

Description

The Head of Windows Enterprise is accountable for the global Windows ecosystem and the full Microsoft technology stack across LMAX Group. This role sets the strategic direction, leads a high-performing global engineering organisation, and ensures the reliability, security, and evolution of all Windows Enterprise services.

You will act as the senior technical authority and final escalation point, but your primary impact will be through strategy, leadership, and driving an automation-first engineering culture that delivers measurable business value.

Key Responsibilities

1. Leadership, Strategy & Organisational Impact

• Define and own the multi-year Windows Enterprise strategy aligned to LMAX Group’s cloud-first and M365 vision.
• Lead and develop a global team spanning 1st, 2nd, and 3rd line engineering, building a culture of ownership, accountability, and collaboration.
• Engage senior stakeholders across business units to ensure Windows services evolve with organisational needs and deliver an exceptional end-user experience.
• Own vendor and partner relationships, including strategic technology decisions and procurement.
• Champion a high-standards culture, where engineering excellence and “doing the right thing” are non-negotiable.

2. Service Ownership & Operational Excellence

• Own the performance, reliability, and consistency of global end-user computing services.
• Ensure robust lifecycle management, including patching, compliance, and security across the Windows estate.
• Act as the senior escalation point for complex or critical issues within the Windows Enterprise environment.
• Oversee asset and application management, ensuring accurate inventory, effective patching, and operational discipline.

3. Identity, Security & Risk Management

• Provide leadership across Identity and Access Management, including IAM lifecycle, Azure AD (Entra ID), RBAC, and directory integrations.
• Partner with Cyber Security to deliver Zero Trust initiatives, conditional access, CASB solutions, and privileged access governance.
• Ensure all services meet regulatory, audit, and security expectations, consistent with financial services standards.

4. Core Infrastructure & Cloud Services

• Own the strategy, reliability, and evolution of Microsoft core services, including Active Directory Directory Services (AD DS), Entra ID, Intune, and the full Microsoft 365 stack.
• Contribute to Azure cloud strategy, supporting IaaS, PaaS, and M365 scalability and modernisation.
• Maintain and support the AWS EC2 infrastructure underpinning the MT4 and MT5 trading platforms, ensuring stability, performance, and alignment with operational and regulatory requirements.
• Maintain and evolve business continuity capabilities, including Azure Virtual Desktop (AVD) and Intune-based continuity frameworks.

Requirements

Technical Expertise

• Deep expertise across the Microsoft ecosystem: Windows Server (2016+), Windows 10/11, Microsoft 365.
• Strong understanding of Azure products, Azure IAM, hybrid identity, and on-premise AD forest integration.
• Experience with Cloud Platforms: AWS, Alibaba, Azure .
• Exposure to Broker Trading systems (MT4/MT5) and FIX protocol is highly advantageous.

Automation & Engineering Practices

• Advanced PowerShell and Azure AD Graph API scripting capability.
• Experience with Infrastructure-as-Code (Terraform, Ansible) and modern CI/CD engineering approaches.
• Proficiency with Intune, Defender for Endpoint, BitLocker, AppLocker, and related enterprise Security tooling.

Leadership & Personal Attributes

• Excellent stakeholder management, able to translate technical strategy into business outcomes.
• A proactive, accountable self-starter with strong ownership and delivery focus.
• Collaborative, approachable leadership style with experience running follow-the-sun operational models.

Qualifications

• Professional certification such as Microsoft Certified: Azure Administrator or Azure Security Engineer.
• Demonstrable experience leading and scaling infrastructure teams within complex, regulated environments.

Benefits

• 25 days of holiday
• Bonus
• Pension contribution
• Private medical, dental, and vision coverage
• Life assurance
• Critical illness cover
• Wellness contribution program with access to ClassPass
• Plumm Platform
• Five volunteering days
• Give as You Earn initiative
• Learning and development programs
• Electric Vehicle Scheme
• Cycle to Work Scheme
• Season Ticket Loan