Job Description Assystem Energy & Infrastructure are recruiting for a dynamic, self-motivated Senior Planner to join our Gatwick Team. Reporting into the PMO Manager, you be working in a hybrid role, 3 days a week based on site at our client offices at Gatwick Airport and 2 days a week from home. Key Responsibilities: As a Senior Planner, you will lead the evaluation of the project time for the relevant programme of works (sector) and correlate cost and risk assessments. Provide guidance to the supply chain to articulate requirements for planning. Responsibilities: Assist the Planning Manager in developing the programme structure, Work Breakdown Structure (WBS), calendars, and dates to be used, aligned with the Cost Breakdown Structure (CBS) and Employer's data dictionary. Help develop cost and resource-loaded programmes during submission in accordance with the required delivery milestones. ⏳ Ensure the programme meets all required access dates, milestones, and key dates in compliance with the Employer’s Planning requirements, contract data, and works information. ⚠️ Contribute to assessing programme risks and programme risk analysis, including the development and implementation of mitigation measures. Monitor progress and regularly update the programme, including forecasting potential problem areas and proposing mitigation measures to the Planning Manager. Cooperate with the Project Controls Manager, Reporting Manager, and Change Management in related construction programme matters. Liaise with stakeholders and other works packages to communicate the agreed construction planning approach and share best practices, innovation, and continuous improvement. ✅ Appraise, review, and assess supply chain programmes and integrate them into the main programme as required. Maintain short and medium-term programmes to ensure main programme objectives are met. Support in “what-if” scenario planning, providing integrated solutions to project conflicts and recoveries. ️ Support the Planning Manager in ad-hoc business requirements as needed. Assist the Planning Manager in leading the Planners by setting objectives, reviewing performance, and anticipating selection and promotion decisions to ensure Planning Engineers have the necessary skills and understanding to deliver the team’s objectives. Capture, implement, and share best practice project planning policies, processes, and procedures across the business to drive continuous improvement and provide specialist advice where required.