Nuclear Defence - Senior Planner

Assystem; Old Warren; On-site; GBP 60,000 - 80,000; Full time

Job summary

Assystem in the UK is seeking an experienced Senior Planner to support a major nuclear defence programme in Aldermaston. The role develops, maintains, and controls integrated project schedules across engineering, infrastructure and construction in a highly regulated environment.

You will create and maintain detailed Primavera P6 schedules, monitor progress, analyse performance, identify schedule risks and opportunities, and report progress to programme leadership.

Responsibilities

• Develop and maintain detailed integrated project schedules using Primavera P6.
• Monitor progress, analyse performance, and identify schedule risks and opportunities.
• Support the implementation of planning, scheduling, and reporting processes in line with programme controls requirements.
• Conduct critical path analysis and provide schedule impact assessments to support decision-making.
• Prepare regular progress reports, dashboards, and forecasting information for project and programme leadership.
• Work collaboratively with project managers, engineers, commercial teams, and other stakeholders to ensure accurate planning data and programme alignment.
• Support change control, baseline management, and recovery planning activities.

Job description

Finding solutions to climate change is the priority of the 21st century, and means switching to low-carbon energy. At Assystem, our mission is to accelerate the energy transition worldwide. To achieve this, our 7,500 Switchers combine their historical engineering expertise and project management with digital technologies.

In our 12 countries (Europe, Middle East, Asia) of operation, we are working on the production and distribution of low-carbon electricity, through the development of nuclear and renewable energies. We are also supporting the modernisation and development of energy grids, managing the setup and siting for new transmission and distribution networks, and using hydrogen to decarbonise the transport and industry sectors.

Job Description

Overview
We are seeking an experienced Senior Planner to support the successful delivery of a major nuclear defence programme in Aldermaston. The role is responsible for developing, maintaining, and controlling integrated project schedules across complex engineering, infrastructure, and construction activities within a highly regulated environment.

Key Responsibilities

• Develop and maintain detailed integrated project schedules using Primavera P6.
• Monitor progress, analyse performance, and identify schedule risks and opportunities.
• Support the implementation of planning, scheduling, and reporting processes in line with programme controls requirements.
• Conduct critical path analysis and provide schedule impact assessments to support decision-making.
• Prepare regular progress reports, dashboards, and forecasting information for project and programme leadership.
• Work collaboratively with project managers, engineers, commercial teams, and other stakeholders to ensure accurate planning data and programme alignment.
• Support change control, baseline management, and recovery planning activities.

Additional Information

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

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