Senior Transformation Manager

Location: Worthing

Closing Date

2026-10-19

• Job Title: Senior Manager Transformation Portfolio
• Location: Durrington / Hybrid
• Contract Type: Permanent

About the role

An exciting opportunity has arisen for a Senior Manager Transformation Portfolio to lead portfolio governance, performance insight, benefits realisation and strategic portfolio planning across Southern Water's transformation portfolio. Working closely with senior leaders across the business, you'll provide oversight, challenge and recommendations to support investment decisions, delivery performance and the successful realisation of transformation outcomes.

What you will be responsible for

• Leading portfolio governance, reporting and performance management across transformation initiatives.
• Maintaining the transformation portfolio roadmap and supporting prioritisation and optimisation activities.
• Identifying and managing portfolio-level risks, dependencies and opportunities.
• Delivering high-quality executive reporting, dashboards and portfolio insight.
• Assuring business cases, benefits forecasts and value realisation across the portfolio.
• Building strong relationships with senior stakeholders and acting as a trusted portfolio management advisor.
• Leading and developing a small team while driving portfolio management best practice and continuous improvement.

Additional Requirements specific to the role

• Occasional travel to Southern Water sites may be required.
• Hybrid working in line with business requirements.
• Line management responsibility for a small portfolio management team.

What you'll bring to the role

Essential

• Significant experience within Portfolio Management, PMO, Transformation, Business Change or Strategic Planning environments.
• Experience managing complex portfolios comprising multiple programmes, projects and change initiatives.
• Strong understanding of portfolio governance, benefits realisation, investment management and delivery assurance.
• Experience producing executive-level reporting, dashboards and performance insights.
• Strong stakeholder management, influencing and communication skills.
• Experience leading and developing teams within portfolio, programme or transformation functions.

Desirable

• Experience within utilities, infrastructure, engineering or other highly regulated environments.
• MoP, MSP, APM, Agile, PRINCE2 or equivalent professional qualifications.
• Experience supporting strategic investment planning and business case governance.
• Experience using enterprise portfolio management systems and reporting tools.
• Experience driving portfolio digitisation, automation and data-led decision making.
• Interested? We'd love to hear from experienced portfolio and transformation professionals who are passionate about delivering meaningful business change at Southern Water.