Head of Infrastructure

TRIA; Greater London; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

TRIA is seeking an experienced Interim Head of Infrastructure & Service Management for a pivotal role in a major IT transformation programme. The position is hybrid based in London and requires leadership in defining and delivering robust infrastructure for a FTSE 250 organisation. Ideal candidates will have a strong track record in enterprise-scale transformations, deep technical knowledge, and the ability to operate at executive levels. This is a chance to significantly shape the infrastructure foundations of a growing organisation.

Qualifications

• Strong track record leading enterprise-scale transformations.
• Experience operating at executive and Board level.
• Deep technical credibility across modern infrastructure architectures.

Responsibilities

• Assess current infrastructure and service management landscape.
• Define target state for infrastructure and service management.
• Establish principles for standardization and automation.
• Review third-party service providers and contracts.
• Design end-to-end service definitions and governance.
• Produce a clear transformation roadmap and implementation plan.

Skills

Enterprise-scale infrastructure management

Service management transformations

Cloud platforms

ITSM tooling

Automation

Operational resilience

Job description

Interim Head of Infrastructure & Service Management

FTSE 250 Organisation / IT Transformation

London Hybrid

Start ASAP to end of September

We are seeking an experienced Interim Head of Infrastructure & Service Management to play a pivotal role in a major IT transformation programme for a FTSE 250 organisation. The business has ambitious growth plans and has completed a high-level IT maturity assessment, strategy and target operating model. The next critical step is to define the detailed end-state, articulate a credible transformation journey, and secure Board approval and investment to execute it.

As a core member of the IT Transformation leadership team, you will lead the Infrastructure & Service Management workstream, defining and delivering the robust, scalable and secure infrastructure and service foundations required to enable future growth and "silent running" operations.

Key responsibilities include:

• Assessing the current infrastructure and service management landscape across Group and Divisions, including networks, cloud and on-prem platforms, end-user environments, service desk and ITSM processes, tooling, assets and licensing
• Defining the target state for infrastructure, service management and operational resilience, covering service architecture, operating model, processes, tooling, observability and recovery capabilities
• Establishing clear principles for standardisation, automation, cloud and hybrid adoption, and determining which services should be insourced or outsourced
• Reviewing third-party service providers and contracts to identify performance, cost, risk and structural issues, and defining approaches to re-tendering, renegotiation or transition where required
• Designing end-to-end service definitions, ownership, SLAs/OLAs, governance and interaction models across Group and Divisions, aligned to a federated IT model
• Working closely with Cyber, Architecture, Applications and Data leadership to ensure alignment across identity and access implementation, platform dependencies, governance and demand management
• Producing a clear transformation roadmap and implementation plan, including transition states, dependencies, costs, benefits and investment requirements to support executive and Board decision making

The successful candidate will have a strong track record leading enterprise-scale infrastructure and service management transformations in complex environments. You will be comfortable operating at executive and Board level, while retaining deep technical credibility across modern infrastructure architectures, cloud and hybrid platforms, enterprise connectivity, ITSM tooling, automation, observability, and operational resilience.

This interim role offers a high-profile opportunity to shape the infrastructure and service foundations of a growing FTSE 250 organisation.

Interim Head of Infrastructure & Service Management