Senior PlannerLocation: Berkshire Area (Full-Time Onsite)Contract: 18 MonthsIR35 Status: Inside IR35We are seeking experienced Senior Planners to support a major long-term programme within a highly regulated and secure environment. This opportunity is ideal for planning professionals with strong Primavera P6, Integrated Master Scheduling (IMS) and Earned Value Management (EVM) expertise who thrive in complex programme environments.Role OverviewYou will be responsible for delivering the full planning capability across assigned projects by maintaining and developing the Integrated Master Schedule (IMS). Working closely with Project Managers, engineers, scientists and business stakeholders, you will provide schedule analysis, forecasting, reporting and planning expertise that supports effective decision-making and programme delivery.This is a highly visible role requiring strong stakeholder engagement skills and the ability to champion planning best practice across multiple projects.Key ResponsibilitiesMaintain and manage Integrated Master Schedules (IMS).Provide planning expertise and support to programme and project teams.Deliver schedule analysis, forecasting and reporting to support business decision-making.Conduct network analysis and critical path analysis.Support Earned Value Management (EVM) activities and schedule performance reporting (SPI).Produce planning and EV deliverables in line with agreed business rhythms.Deliver long-range operational and integrated programme ..... full job details .....