Supply Chain Manager

Our Vision:
Continue to be the leading UK mobile infrastructure services company.

Our Mission:
To be famous for excellence in delivery, embracing transformation with our people and our customers at its heart.

We are at an exciting time in our company’s development. We've come a long way since we were first formed in 2012. From the rollout of new technologies and managing complex legislation affecting the industry, we are leading the conversation on innovation and developing sharper solutions to serve our customers better. We collaborate as a team to meet the high standards expected of us and demand the best of ourselves through our values.

Role Purpose

The Supply Chain Manager owns relationships with key suppliers and oversees the governance processes that ensure contractual and service obligations are delivered consistently and in line with company strategy.

The role supports the Operations team in managing supplier performance across the operational portfolio, maintaining the appropriate commercial balance between delivery outcomes and long term value while prioritising health and safety in all supplier engagements.

Scope

The Supply Chain Manager is accountable for the day-to-day management and governance of key strategic Operations supplier relationships. The role ensures contractual obligations are clearly understood, tracked, and delivered while maintaining strong supplier engagement and promoting operational excellence.

The Operations Supply Chain Manager is responsible for:

• Acting as the primary relationship owner for strategic Operations suppliers.
• Leading regular governance forums and performance reviews.
• Monitoring supplier performance against contractual obligations, KPIs, and service levels.
• Driving accountability, performance improvement, and continuous improvement initiatives.
• Managing contractual issues, disputes, and performance escalations.
• Supporting contract variations, renewals, and change requests.
• Ensuring supplier compliance with Cornerstone policies, governance standards, and health and safety requirements.
• Collaborating with internal stakeholders to ensure supplier delivery aligns with operational priorities and customer requirements.
• Providing oversight of risks, issues, and opportunities associated with supplier performance.

Delivery

The Supply Chain Manager will manage supplier performance and commercial outcomes across Operations.

Key Accountabilities

• Managing strategic supplier relationships to ensure delivery of contractual commitments.
• Leading governance forums and operational review meetings.
• Monitoring supplier KPIs and driving corrective actions where performance falls below expectations.
• Reviewing and challenging supplier forecasts, valuations, invoices, and claims.
• Ensuring appropriate commercial controls are applied to operational spend.
• Supporting financial planning, forecasting, and budget management activities.
• Identifying opportunities to improve value, efficiency, and contract performance.
• Managing contractual disputes and supporting resolution activities.
• Providing commercial insight and recommendations to Operations leadership.
• Supporting procurement and supplier selection activities where required.
• Working closely with Finance and Commercial teams to ensure robust cost management and reporting.
• Ensuring supplier compliance with contractual, safety, and regulatory obligations.
• Producing regular reports on supplier performance, contractual compliance, and commercial performance.

Role Expertise

To succeed in this role, the Supply Chain Manager must combine strong commercial judgement with effective supplier and contract management skills.

The postholder will have experience managing complex supplier arrangements, interpreting contractual requirements, and applying appropriate commercial challenge. They will be confident analysing costs, reviewing financial information, and ensuring supplier relationships deliver value for the business.

The role requires a proactive individual who can balance operational delivery with robust commercial governance, influencing suppliers and internal stakeholders while maintaining effective working relationships.

Knowledge, Skills and Experience

Experience

• Experience in contract management and supplier governance.
• Experience managing supplier performance against contractual obligations and KPIs.
• Experience reviewing and challenging supplier cost submissions, invoices, or valuations.
• Strong commercial management experience within an operational environment.
• Experience managing stakeholder relationships across multiple functions.
• Experience identifying and delivering cost-saving or efficiency initiatives.

Skills and Knowledge

• Strong contract management expertise.
• Commercial and financial acumen.
• Cost control and budget management skills.
• Ability to analyse financial information and supplier performance data.
• Strong negotiation and influencing skills.
• Excellent stakeholder management capability.
• Strong governance and reporting skills.
• Effective dispute resolution and problem-solving…