Xoserve
Head of Enterprise Portfolio Office
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Company Overview
Xoserve is the UK gas industry’s Central Data Services Provider, playing a critical role in supporting the safe, efficient and reliable operation of Britain’s gas market. It provides a single, trusted source of industry data and services for gas suppliers, shippers and transporters, ensuring information is accurate, secure, and consistently shared across the sector. By managing the central gas register and providing insight on gas flows across the network, Xoserve helps the industry balance supply and demand and supports effective market processes that benefit consumers. As the energy system transitions, Xoserve is committed to enabling affordable, accessible decarbonisation by supporting the integration of green gas and biomethane into the UK’s energy mix. Xoserve is an equal employment opportunity employer, and we are building a diverse, inclusive, and authentic workplace for everyone.
Role Summary
Reporting to the Director of Finance and Transformation, the Head of Enterprise Portfolio Office is responsible for the governance and oversight of the change delivery portfolio within Xoserve. This role provides a holistic view of all change underway or forecasted within Xoserve ensuring it aligns with strategic objectives. The function identifies and manages any contention in the plan, provides assurance around the delivery and robust and accurate reporting with recommendations to senior stakeholders to enable effective portfolio level decision making and being certain Xoserve will deliver its commitments.
Responsibilities
Portfolio Management & Methodology
- Create and maintain the Enterprise Roadmap of Change across Xoserve showing a rolling 5 year plan with a detailed 18-month view
- Maintain the Enterprise Portfolio Management (EPM) delivery methodology and framework including processes, standards, and templates to be applied to the portfolio of projects
- Maintain and continuously improve the EPM Delivery Framework and ensure adherence to standards and best practice. Ensure alignment between approved demand, portfolio prioritisation, and delivery capacity across all portfolios
- Maintain governance structures, reporting cycles, and quality standards in line with organisational and regulatory requirements
- Provide programme assurance, ensuring adherence to project and programme management methodologies and best practices
- Management of central portfolio level RAID
Governance and Reporting
- Develop and Maintain governance structures, reporting cycles, and quality standards in line with organisational and regulatory requirements from project engagement to Board level reporting.
- Assure that appropriate and consistent governance is undertaken across all projects and programmes
- Maintain and continuously improve the EPM Delivery Framework and ensure adherence to standards and best practices
- Provide regular cadence of portfolio status updates and reports to senior management and stakeholders at the relevant Boards e.g. Transformation Delivery Board and the Transformation Oversight Board
- Facilitate regular portfolio review meetings, including risk assessment and issue resolution
- Facilitate lessons learnt and premortem sessions. Ensure library available for use
- Provide standards and consistency across programmes in areas such as SharePoint structures, document management, decisions logs, approach for 3rd party working etc
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Programme Assurance
- Provide independent project assurance at critical points e.g. stage gates
Demand Management / Change Pipeline and Horizon Scanning
- Own and operate a centralised demand intake process ‘the Front Door’ ensuring all change demand is captured, logged, and managed consistently across the organisation
- Maintain standardised demand submission criteria, including business case inputs, benefits, cost estimates, risks, and strategic alignment for initiatives
- Lead the initial triage and assessment of demand working with business stakeholders and technical teams to facilitate cross-portfolio demand prioritisation, using agreed criteria
- Establish clear criteria and governance to proceed across stage gates
- Ensure clear handoff from demand into delivery, including mobilisation into projects/programmes once resource identified
- Provide regular reporting on demand trends, capacity constraints, and pipeline health to governance forums (e.g. Transformation Delivery Board)
- Ensure regular horizon scanning to anticipate new demand, risk or change in direction
- Continuously improve the demand management process, ensuring alignment with organisational maturity and evolving business needs
Central Resource Management:
- Provide governance to understand current and future resource requests
- Maintain regular cadence of requests
- Provide coordination and management of requests
- Where requests cannot be fulfilled escalate to appropriate forum e.g. people or Board for a prioritisation decision
- Work with finance to establish and maintain time sheeting of centrally controlled resources. Ensure Programme Managers are within budget of their resource plan
Leadership & Capability Development
- Lead and develop a high-performing team, providing coaching, feedback, and ongoing professional development
- Foster a collaborative, high-performance culture across internal and external teams
- Build leadership capability within the team, supporting effective delivery and stakeholder engagement
Stakeholder Management:
- Foster strong relationships with internal stakeholders to promote collaboration and support including Programme Leaders, BAU teams, key stakeholders at all levels
- Build effective working relationships with any 3rd party delivery partners and working effectively to minimise duplication of reporting
- Act as the primary point of contact for all portfolio reporting-related queries and issues
Continuous Improvement
- Embed and mature portfolio management processes across the organisation
- Identify opportunities for process improvement and implement best practices
- Stay up to date with industry trends and emerging practices in portfolio management
- Lead initiatives to enhance the maturity and capability of the Enterprise Portfolio Office
Specialist/Technical Expertise
Essential
- Proven experience leading a high performing Portfolio Office function within a complex delivery environment
- Strong understanding of project and programme management methodologies (e.g. MSP, PRINCE2, Agile) and ability to develop right size methodology for Xoserve use
- Experience operating within complex, multi-stakeholder and multi-supplier environments
- Governance, risk management, and performance reporting at portfolio level expertise
- Demonstrable ability to lead and develop high-performing, cross-functional teams
- Excellent written and verbal communication and influencing skills, with the ability to engage technical and non-technical audiences up to C-suite
- Skills and experience in developing and delivering management information, dashboards, and reporting outputs using the tools and AI
- Ability to analyse and interpret complex information, translating between technical and business concepts
- Confident decision-making and prioritisation skills in a complex environment
- High proficiency in project and portfolio management tools (e.g. Smartsheet, Asana, MS Project, Power BI, or similar)
- Experience working within regulated or compliance-driven environments
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Desirable
- Professional certifications such as P30, Prince2 and MSP are highly desirable
- Experience within the gas or utilities sector
What we offer:
- A competitive annual salary, reflective of your skills and experience
- Discretionary individual performance bonus linked to your overall contribution
- Generous pension scheme to support your long-term financial wellbeing - up to 12% employer contribution
- Life insurance providing peace of mind for you and your family
- 36 days annual leave (including Bank Holidays) to rest and recharge
- Income protection to support you should illness or injury prevent you from working
- Enhanced annual leave options, including the ability to purchase additional holiday each year
- Enhanced family friendly policies
- Access to Private Medical Insurance for you and your family (Bupa)
- Health cashback plan for you and up to four dependent children (Medicash)
- 24/7 virtual GP, plus remote Physiotherapy, Mental Health Support, and Medical Second Opinion (Help@Hand)
- Electric Vehicle Salary Sacrifice Scheme (Octopus EV)
- Free, confidential Employee Assistance Programme (LifeWorks)
- Commitment to ongoing learning and development opportunities
- Financial support for one annual professional membership subscription
- A wide range of wellbeing initiatives
- Discounts on high street retailers, supermarkets, cinema tickets, holidays, and more
- Paid volunteering hours to support our local communities
- Opportunity to take part in our twice yearly employee events, social activities, and ongoing engagement initiatives
This is a hybrid working role from our Solihull office with frequent days in the office expected. The closing date for applications is 3rd September 2026. We encourage candidates to submit their applications as early as possible and not to wait until the published closing date. Xoserve’s recruitment periods can and may vary. We reserve the right to remove this advert or close it to further applications at any point during the recruitment process.
The Energy Industry is about to reform and change at pace, and it needs people like you to come and be part of its new design. If you are interested and consider you have the skills and experience we are looking for, please apply through our Job Board
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