Senior Planner - HS2

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. Role Purpose The Senior Planner is responsible for developing, maintaining, analysing, and reporting integrated project schedules across a major infrastructure programme. Working client-side, the role provides planning assurance, performance analysis, schedule governance, and strategic programme controls support to ensure the successful delivery of project objectives relating to scope, time, cost, and risk. Key Responsibilities Develop, maintain, and review integrated programme and project schedules within Primavera P6. Monitor contractor and delivery partner programmes, assessing progress, logic, critical path, schedule health, and forecast completion dates. Provide independent challenge and assurance of contractor schedules, methodologies, and recovery plans. Analyse schedule performance, trends, milestones, float consumption, and programme risks. Support change control processes by assessing the time impact of proposed changes and compensation events. Produce regular planning and performance reports for project leadership and senior stakeholders. Facilitate planning workshops, schedule reviews, and risk sessions. Ensure compliance with programme controls standards, planning procedures, and governance requirements. Support integration of schedule data with cost, risk, and reporting functions. Identify potential delays and develop mitigation and recovery strategies. Contribute to business cases, delivery strategies, and programme-level planning activities. Key Skills & Experience Significant experience in planning and scheduling within major infrastructure, rail, transportation, utilities, or construction projects. Strong Primavera P6 expertise. Experience reviewing and challenging contractor programmes. Understanding of NEC contracts and programme management requirements. Knowledge of critical path analysis, earned value principles, schedule risk analysis, and programme controls. Excellent stakeholder management and communication skills. Ability to present complex schedule information to senior management and project boards. Experience working within a client, sponsor, or programme management environment. NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process. 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.