Assystem

Senior Planner

Assystem · Warrington, England, United Kingdom
Warrington, England, United Kingdom Closed
Applications are closed for this role. It was originally posted 2026-08-07. It’s no longer accepting applicants — see roles Assystem is still hiring for →, or browse the live openings below.
Type
Full-time
Experience
5+ yr

🔧 Senior Project Planner Opportunity

Help shape and deliver complex, large-scale nuclear projects by leading planning and scheduling activities, providing assurance, insight, and robust project controls support.

🌟 Key Responsibilities:

📅 Develop, own and maintain integrated Primavera P6 schedules aligned to scope, WBS, CBS and key milestones.

🛠️ Collaborate with PMs, Engineers, Commercial, Risk and stakeholders to create realistic, achievable plans.

📊 Lead progress updates, analyse performance, trends and variances, and provide clear management insight.

📈 Identify critical and near-critical paths, dependencies, constraints, risks and opportunities.

📑 Develop and maintain WBS/CBS alignment, schedule coding, assumptions and planning basis.

🎯 Establish and maintain schedule baselines, ensuring changes are managed through formal change control.

🛡️ Perform schedule health and integrity checks, challenging logic, durations, constraints, float and calendars.

⚠️ Assess schedule risk and support mitigation, what-if scenarios, recovery plans and QSRA where required.

👥 Support resource loading, capacity analysis, forecasting and resource profiles/histograms.

💷 Integrate schedule, cost and EVM information to support performance measurement and forecasting.

🔗 Manage key interfaces and dependencies across Engineering, Procurement, Construction and Commissioning.

📋 Review and challenge supplier/contractor schedules and integrate them into the overall project plan.

🏗️ Ensure schedules reflect nuclear assurance, approvals, hold points, procurement, testing and commissioning requirements.

🤝 Mentor junior planners and promote consistent planning standards, governance and best practice.

🎯 Skills Needed:

✔️ Advanced Primavera P6 planning and scheduling capability.

✔️ Strong understanding of Earned Value Management and integrated cost/schedule controls.

✔️ Strong critical path, schedule assurance, forecasting and analytical skills.

✔️ Excellent communicator, collaborator and problem-solver.

✔️ Commercial awareness with strong attention to detail.

✔️ Proven experience managing complex, integrated project schedules.

​​​​ Qualifications

🎓 Qualifications:

🎓 Degree in Project Management, Engineering, or related field.

🏆 Primavera P6 Advanced Course, APM PM Fundamentals, or equivalent.

💡 Nuclear or other highly regulated industry experience desirable.

💬 Ready to lead the way? Join us and drive successful delivery across complex nuclear projects! 🌟

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum BPSS level.

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.

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Applications closed