Delivery PMO Specialist

To be the UKs leading digital infrastructure partner, enabling a fully connected future

Deliver reliable, high quality site access, infrastructure and services that support our customers’ evolving connectivity needs

For almost two decades, Cornerstone’s infrastructure has quietly supported the UK’s mobile networks. Whilst we continue to strengthen that foundation and extend its reach, we’re in an exciting period of acceleration and product development that will see us enable more connectivity and compute to more communities and industries across the UK.

Strong governance is at the heart of successful delivery. This role ensures that key business decisions are transparent, traceable, and effectively executed across both internal teams and external partners. You'll help drive accountability across programmes, maintain governance standards, challenge underperformance, and ensure that stakeholders across Delivery, Commercial, Procurement, Legal and Operations remain aligned. By identifying risks early, managing governance forums, and driving action ownership, you'll play a vital role in supporting successful delivery outcomes across Cornerstone's strategic programmes, particularly within the VMo2 portfolio.

Manage and coordinate Demand & Governance Boards, ensuring decisions, actions and outputs are accurately recorded and tracked. Maintain governance documentation including action logs, decision registers, trackers and audit records. Oversee programme governance activities including prioritisation, approvals and programme lifecycle controls. Identify governance risks, process gaps and missed deadlines, escalating issues where appropriate. Coordinate inputs from Delivery, Commercial, Procurement, Legal and other business functions to ensure governance compliance.

Support supplier allocation processes, including change controls and governance approvals.

Support Partner Performance reviews and governance meetings through preparation of reports, actions and governance outputs. Track actions and commitments arising from supplier performance reviews, ensuring delivery against agreed timescales. Analyse supplier performance data to identify trends, recurring issues and delivery risks. Escalate concerns through appropriate governance channels and support performance improvement initiatives.

Manage demand trackers, milestone reporting, customer communications and delivery updates. Lead the administration of change control and overtake review processes. Coordinate and facilitate Demand Forums, ensuring alignment across all customers and stakeholders. Challenge inconsistencies in delivery progress, site data and milestone reporting to support effective decision making.

Produce governance packs, executive reports and presentation materials for leadership reviews and stakeholder forums. Consolidate information from multiple departments including Delivery, Procurement, New Business, Product and Operations teams. Ensure governance frameworks, standards and documentation remain consistent, compliant and fully auditable. Promote governance best practice and process discipline across all demand-related work streams.

Proven experience managing complex processes within a multi-stakeholder, operational or regulated environment. Experience working in governance, PMO, delivery assurance, compliance or operational performance roles. Strong organisational skills with the ability to prioritise and manage multiple work streams simultaneously. Experience maintaining governance documentation, decision logs, audit trails and…