Planner - SC in Aldermaston, Berkshire

We are seeking an experienced Project Planner with strong Primavera P6 skills to support programme planning and project controls at a major nuclear and defence site in Aldermaston, Berkshire.

The successful candidate will be responsible for developing, maintaining and managing project schedules, ensuring alignment with programme milestones, planning standards and delivery requirements. The role involves working closely with project teams, internal stakeholders and external suppliers to provide accurate schedule forecasts, support change management and deliver high-quality planning reports.

• Develop and maintain detailed project schedules using Primavera P6, including defining and managing the Work Breakdown Structure (WBS).
• Manage schedule updates and forecasts, collecting and validating progress information from internal stakeholders and external suppliers.
• Develop and maintain baseline schedules in collaboration with project teams, ensuring agreed scope, milestones and delivery requirements are captured.
• Support change control processes by developing what-if scenarios and conducting schedule impact assessments before approved changes are incorporated.
• Resource-load schedules using the Enterprise WBS Dictionary to support resource levelling and programme-wide resource planning.
• Undertake critical path analysis, identify schedule risks and assess potential impacts on key milestones and programme delivery.
• Produce and present planning reports and performance data for project progress meetings and monthly programme review boards.
• Ensure schedules comply with organisational planning standards and align with the overall programme master timeline.
• Support and mentor the wider planning community, sharing best practice and developing planning capability across the team.
• Promote continuous improvement and ensure high-quality, sustainable planning support.

• Proven experience in project or programme planning.
• Strong practical experience using Primavera P6.
• Good understanding of project planning methodologies and scheduling best practice.
• Knowledge of project controls disciplines and their integration with programme planning.
• Experience in schedule development, baseline management, progress updates, forecasting and change control.
• Strong analytical skills, including critical path analysis and schedule impact assessment.
• Excellent communication, stakeholder engagement and presentation skills.
• Ability to prioritise workloads and deliver accurate outputs within challenging timescales.
• A proactive approach to knowledge sharing and mentoring.

• Previous experience within the nuclear and/or defence sectors.
• Experience working in a highly regulated nuclear environment.
• Familiarity with programme-level planning, resource management and integrated project controls.

Primavera P6 - strong working knowledge and practical experience in developing, maintaining, updating and analysing complex project schedules.

The ideal candidate will be a proactive and detail-oriented planner with strong technical scheduling capabilities and excellent stakeholder management skills. They will be comfortable working within a complex, highly regulated site environment, collaborating with multidisciplinary teams and supporting the delivery of programme milestones to demanding timescales.