Portfolio Manager – NESO

Company: National Energy System Operator
Apply for the Portfolio Manager – NESO
Location: Warwick
Job Description:

About The Role

The Portfolio Manager role sits within the Enterprise Portfolio Office (EPO), responsible for managing NESO’s enterprise-wide investment portfolio to align with strategic objectives and maximise value. Reporting to the Head of Portfolio Office, the role provides leadership and ownership of end-to-end Portfolio Governance across NESO, designing, embedding and continuously improving governance frameworks, standards, and methodologies to ensure robust governance, effective portfolio assurance and clear decision-making structures across all programmes and projects.

Key Accountabilities

  • Defining, implementing and continuously improving the end-to-end Enterprise Portfolio Governance framework to ensure consistent, transparent and effective decision‑making across all programmes, projects and key BAU activity.
  • Establishing and maintaining robust portfolio management standards, policies and methodologies to drive consistency, best practice and high‑quality delivery across the enterprise.
  • Establishing and delivering a comprehensive portfolio assurance approach, providing independent oversight, challenge and insight on portfolio health, risks, issues and deliverability to support informed decision‑making.
  • Leading governance requirements for Portfolio & Project Management (PPM) tooling (Verto), ensuring alignment to standards, lifecycle processes and consistent, high‑quality data across the enterprise portfolio.
  • Developing and delivering clear, consistent and governance‑led portfolio communications, including executive reporting, board materials and decision packs to enable transparency and alignment.
  • Providing expert direction and guidance on processes, standards and best practices, fostering a culture of excellence and continuous improvement.

About You

  • Professional certification in portfolio / programme / project management (e.g. MSP, MoP, PRINCE2, APM) or equivalent experience.
  • Passion for Enterprise Portfolio Offices and an understanding of the critical role governance plays in enabling strategic delivery.
  • Deep understanding of portfolio governance frameworks, lifecycle models and assurance processes.
  • Extensive experience designing, implementing and embedding portfolio governance, standards and methodologies at scale.
  • Excellent communication and stakeholder engagement skills, with experience influencing and challenging at senior and executive levels.
  • Strong leadership, able to provide clear direction, coaching and oversight to analysts and wider delivery teams to ensure consistent adoption of governance standards.
  • Flexible, dynamic and able to pivot quickly in response to changing organisational priorities, operating environments and strategic direction.

What You’ll Get

A competitive salary of £60,000 – £70,000 depending on experience and capability. Bonus up to 15% of salary for stretch performance, 28 days annual leave, and a competitive contributory pension with the company matching up to 12%.

Benefits

  • Flexible Bank Holidays & Holiday Trading
  • Additional Birthday Day Off
  • Cycle to Work Scheme, Retail & Gym Discounts
  • Private Medical Insurance, Critical Illness Insurance & Personal Accident Insurance

More Information

This role closes at 23:59 on the day before the date shown above. We encourage interested candidates to apply early as closing dates vary. NESO is committed to a fair, inclusive recruitment process and welcomes applicants from diverse backgrounds.

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Posted: May 30th, 2026