Head of Portfolio Demand and Mobilisation

Salary: £115,000 - 115,000 per year

Requirements:

• Significant senior leadership experience within digital, technology, or transformation environments, with responsibility for end-to-end demand management, mobilisation, and stakeholder engagement.
• Proven experience leading enterprise-wide demand management processes, including shaping, scoping, estimating, prioritising, and mobilising strategic initiatives.
• Strong experience building trusted relationships with Executive Leaders, Senior Leadership Teams, sponsors, and business stakeholders.
• Experience developing integrated roadmaps and strategic investment plans within large, complex organisations.
• Demonstrable experience mobilising complex, high-value digital and technology programmes from concept through to delivery.
• Experience leading, mentoring, and developing multidisciplinary teams within portfolio, demand, or transformation functions.
• Strong commercial awareness with experience supporting large-scale investment decisions, portfolio prioritisation, and governance.
• Excellent communication, influencing, and stakeholder management skills with the ability to build consensus across Business, Digital, and supplier communities.
• Ability to balance strategic thinking with operational delivery in a fast-paced and evolving environment.
• Strong knowledge of portfolio demand management, mobilisation, governance, and strategic planning within large-scale digital environments.
• Experience establishing and operating governance frameworks to support portfolio prioritisation, investment decisions, and resource allocation.
• Strong understanding of business case development, benefits realisation, impact assessment, and risk management.
• Experience developing integrated business and technology roadmaps aligned to strategic objectives.
• Ability to influence solution design and business alignment through collaboration with Enterprise Architecture and delivery teams.
• Strong understanding of portfolio management, resource planning, and organisational change within complex technology environments.
• Experience working within utilities, regulated industries, or other large, complex enterprise organisations.
• Experience supporting AMP planning, annual budgeting, and strategic investment planning processes.
• Experience leading business engagement and mobilisation functions within large-scale digital transformation programmes.
• Experience managing strategic vendor relationships and driving collaborative delivery across internal and external partners.
• Degree in Business, Technology, Programme Management, or a related discipline.
• Professional qualification in Portfolio, Programme, or Project Management such as MSP, PRINCE2, or APM.
• Knowledge of Agile delivery methodologies and enterprise portfolio management practices.
• Experience working with enterprise portfolio management and planning tools.

Responsibilities:

• Lead, mentor, and develop the Portfolio Demand and Mobilisation team, fostering a culture of collaboration, continuous improvement, and strategic business partnership.
• Act as a trusted advisor to senior business stakeholders, influencing strategic decisions and articulating the long-term value of digital and technology initiatives.
• Lead the end-to-end demand management process, ensuring business demand is effectively shaped, scoped, prioritised, estimated, and mobilised into delivery.
• Own the Digital front door, providing a clear engagement model for business stakeholders, customers, and vendors.
• Develop and maintain integrated business and Digital roadmaps that align strategic objectives, investment priorities, and delivery plans.
• Oversee the mobilisation of complex business and technology programmes from initial concept through to delivery handover, supporting benefits definition and early impact assessments.
• Build strong strategic relationships with business leaders, project sponsors, and external vendors to maximise value and delivery outcomes.
• Support governance frameworks and demand management processes to enable effective prioritisation, investment decisions, and resource allocation across the portfolio.
• Work closely with Enterprise Architecture and Digital stakeholders to develop solution options and secure business alignment.
• Drive standardisation and reusability across business capabilities and Digital services.
• Support AMP planning and annual budgeting processes, ensuring investment decisions align with strategic priorities.
• Influence alignment between Business and Digital roadmaps to maximise value delivery across the organisation.
• Promote continuous improvement across portfolio demand, mobilisation, and business engagement processes.

Technologies:

• Support
• CTO
• Security

More:

We are Thames Water, the UKs largest water and wastewater company, serving more than 16 million customers every day. We offer a unique, rewarding, and diverse place to work, with meaningful career opportunities, flexible working arrangements, and excellent benefits. This hybrid role is based at Clearwater Court, Reading, with a working pattern of 36 hours Monday to Friday. We are committed to being a great, diverse, and inclusive place to work, and we welcome applications from everyone. We also support colleagues with adjustments during recruitment and offer opportunities to get involved supporting our customers as a frontline ambassador. We want passionate, skilled people to help us build a better future for our customers, our region, and our planet.

last updated 30 week of 2026