Site and Office Manager

Originally named Great British Nuclear, Great British Energy - Nuclear is an arm’s length body of the Department for Energy Security and Net Zero, dedicated to supporting the development and deployment of new nuclear technologies in Great Britain. We play a crucial role in advancing nuclear new build, ensuring the UK’s energy security and achieving net-zero carbon emissions. Great British Energy - Nuclear focuses on fostering innovation, facilitating investment, and coordinating efforts across the nuclear industry to build a resilient and sustainable energy future.

Great British Energy - Nuclear’s first step was to start the technology selection process for Small Modular Reactors (SMRs) in 2023. SMRs can potentially be quicker to deploy and less expensive to build than traditional nuclear power plants because they are smaller, have factory based modular manufacturing and more flexible deployment options. In June 2025, Great British Energy - Nuclear announced that Rolls-Royce SMR had been selected as the preferred bidder to build the UK’s first SMRs, following a technology selection process that began in 2023.

Great British Energy - Nuclear

Our activities will be driven by our values, which are:

Trust - We prioritise safety, we act responsibly and with integrity.

Collaboration - We work as a team; we value diversity and expertise.

Challenge - We are curious and courageous in the way we think and act.

Care - We are thoughtful, inclusive and respectful of others.

Drive - We get things done and we make a difference.

If you have a disability and would prefer to apply in a different format or would like us to make reasonable adjustments to enable you to apply or attend an interview, please contact us at recruitment@greatbritishnuclear.uk and we will talk to you about how we can assist.

The Site and Office Manager is a key operational role within the SMR Development Programme, responsible for the day-to-day management of both the development site and the on-site office facilities. Reporting to the Integrated Project Team and working closely with the GBN Land, Property and Facilities Management team, you will ensure the safe, compliant, and efficient delivery of all site and office-based activities.

As the senior GBN representative on site, you will oversee estate, utilities, and facilities operations, while managing the office environment to support effective working conditions for staff, secondees, and contractors. This role requires strong leadership, organisational capability, and excellent stakeholder management skills.

Responsibilities

Site & Office Management

• Lead and coordinate all activities undertaken by GBN staff, secondees, and contractors on site.
• Manage and deconflict work packages to ensure safe and efficient delivery.
• Oversee site offices, welfare facilities, storage areas, and meeting spaces.

Facilities & Estate Management

• Oversee daily and monthly facilities management meetings and cost reviews.
• Manage the operational needs of the office, including cleaning, maintenance, equipment, and room bookings.
• Supervise estate-related activities such as vegetation management, tree safety, invasive species control, and conservation areas.
• Coordinate emergency and reactive works across the wider estate and office facility.

Utilities & Property Management

• Liaise with utility providers for maintenance, upgrades, and emergency support.
• Work with GBN’s external land agents on tenant engagement, property matters, and site access.
• Conduct insurance checks, property inspections, and asbestos register reviews.

Stakeholder & Regulatory Engagement

• Act as the primary point of contact for local residents, tenant farmers, NGOs, and regulators.
• Maintain regular communication with local authorities, the National Trust, ecological groups, and emergency services.
• Represent GBN in community briefings, stakeholder meetings, and site visits.

Knowledge, Skills and Experience

Essential

• Strong understanding of HSSE regulations and compliance frameworks.
• Proven experience managing multidisciplinary teams and contractors.
• Knowledge of office management, building services, and facilities operations.
• Excellent communication and stakeholder engagement skills.

Desirable

• Degree in Engineering, Construction Management, Facilities Management, or a related field.
• Experience in site, estate, or facilities management within energy, or large-scale infrastructure environments.
• NEBOSH or equivalent health and safety qualification.
• Experience in environmental or ecological site management.
• Background in managing office environments as part of an operational role.