Site Ancillaries Construction Lead Engineer

Great British Energy - Nuclear; Warrington; On-site; GBP 90,000 - 130,000; Full time

Job summary

Great British Nuclear is recruiting a Site Ancillaries / Construction Principal Engineer for the Wylfa SMR project. You will lead technical definition, integration and maturation of Site Ancillaries scope through Concept Design Readiness, focusing on permanent on-site facilities and utilities.

You'll work with Masterplanning, Enabling Works, Reactor Island, Balance of Plant, PMO and suppliers to define requirements, interfaces and option studies, ensuring safety, constructability and regulatory

Qualifications

• Significant experience in civil, infrastructure, architectural or systems engineering within major projects or regulated environments.
• Strong understanding of Concept Design development, including requirements capture, optioneering, interface definition and design maturity progression.
• Strong communication and stakeholder engagement skills across technical and non-technical audiences.
• Experience developing and managing requirements registers, facilities schedules, utilities strategies and interface documentation.
• Experience in spatial coordination and masterplanning integration, including layout development, zoning and constraint resolution.
• Ability to manage complex interfaces across multiple technical disciplines and delivery workstreams.
• Knowledge of utilities infrastructure and demand modelling, including electrical, water, wastewater and communications systems.
• Understanding of structured breakdown methodologies (PBS/SBS/WBS) and configuration-controlled scope definition.
• Ability to operate effectively in environments with uncertainty, evolving scope and changing requirements.

Responsibilities

• Lead the technical definition and assurance of the Site Ancillaries scope for Wylfa, focused on permanent on-site auxiliary buildings and infrastructure, while managing boundaries and interfaces with Enabling Works and Associated Developments.
• Establish, maintain and assure the Site Ancillaries requirements baseline, including requirements registers, functional and performance requirements, operational and maintenance constraints, and HSE considerations.
• Lead development of Site Ancillaries facilities and infrastructure definition, including facilities schedules, functional requirements, capacity needs, spatial requirements and operational relationships.
• Develop and assure strategic technical definition at Concept Design level, including zoning principles, access and security strategy, utility philosophy and alignment with PBS/SBS/WBS structures.
• Lead utilities demand identification and strategy, including electrical, water, wastewater, drainage and telecoms infrastructure, defining demand assumptions, distribution philosophy and external interfaces.
• Coordinate integration with Masterplanning, including alignment with spatial zones, site constraints, constructability and programme sequencing.
• Support delivery of Engineering Work Packages, including development and assurance of task orders and supplier deliverables.
• Lead or support structured optioneering activities, including facility grouping, layout strategies and utilities routing, ensuring alignment with safety, constructability, programme, cost and environmental considerations.
• Develop and manage formal interfaces with adjacent workstreams including Masterplanning, Enabling Works, Associated Developments, Reactor Island, Turbine Island, Balance of Plant, SSSE Case and PMO.
• Produce and assure interface management outputs including interface registers, interface control documents (ICDs), dependency maps and clash/constraint resolution logs.
• Coordinate with SSSE Case and regulatory stakeholders on zoning, emergency planning, environmental and permitting requirements.
• Support Concept Design Gate activities, including design maturity assessments, assurance documentation and inputs to DCO and permitting processes.
• Instruct and technically manage engineering supply chain partners delivering studies, layouts, requirements capture, utilities strategies and concept design outputs.
• Manage scope boundaries where temporary construction facilities or utilities interface with or transition into permanent Site Ancillaries.
• Support PMO / Project Controls by providing clear technical scope definitions, assumptions, dependencies and delivery inputs.
• Promote collaborative working across all project partners, ensuring transparency of decisions, assumptions, risks and residual uncertainties.

Skills

Civil engineering

Infrastructure design

Requirements management

Stakeholder engagement

Interface management

Regulatory understanding

Spatial planning

Team leadership

Job description

Great British Nuclear is recruiting a Site Ancillaries / Construction Principal Engineer for the Wylfa SMR project. You will lead technical definition, integration and maturation of Site Ancillaries scope through Concept Design Readiness, focusing on permanent on-site facilities and utilities.

You'll work with Masterplanning, Enabling Works, Reactor Island, Balance of Plant, PMO and suppliers to define requirements, interfaces and option studies, ensuring safety, constructability and regulatory