Planner (Commissioning)

About Assystem

At Assystem, our mission is to accelerate the energy transition worldwide. Our 8,000 Switchers combine over 55 years of engineering expertise with advanced digital technologies to deliver complex infrastructure solutions. In the UK, we play a pivotal role in major nuclear programmes including Hinkley Point C, Sizewell C and emerging Small Modular Reactors (SMRs). Together, we are shaping a low-carbon future through innovative engineering and project delivery.

Why Join the Community of Switchers?

Join one of the three largest nuclear engineering companies in the world and contribute to delivering the next generation of low-carbon infrastructure. At Assystem, your future team collaborates on some of the most complex and high-profile nuclear projects globally. You will be part of an organisation recognised for engineering excellence, innovation and its commitment to developing talent within a dynamic and supportive environment.

The Job Mission

This hybrid role is ideal for candidates within commuting distance of Bridgwater or open to relocation, with support provided. You will lead the development and management of integrated project schedules within a complex infrastructure programme. Working closely with your future team, you will provide critical planning insight to support strategic project delivery decisions.

• Own and maintain integrated project schedules using Primavera P6 across complex programme environments.
• Ensure contractor schedules are aligned and fully integrated into the overarching master programme.
• Develop and manage logic-linked schedules aligned with defined project work breakdown structures.
• Analyse schedule performance to identify critical path, risks, delays and improvement opportunities.
• Provide clear schedule reporting and insights to senior stakeholders and project leadership teams.
• Manage schedule updates and assess impacts of changes in line with project control processes.
• Collaborate with engineering, construction and project controls teams to ensure delivery alignment.
• Support development and continuous improvement of planning standards, processes and best practices.

Essential Skills

• Significant experience as a Planner within major infrastructure or engineering projects.
• Advanced proficiency using Primavera P6 for complex schedule development and management.
• Strong understanding of construction sequencing, engineering delivery and programme controls.
• Proven experience integrating multiple contractor schedules within large-scale programmes.
• Ability to analyse schedule data and communicate insights to senior stakeholders clearly.
• Strong stakeholder engagement and communication skills across multidisciplinary project teams.
• High attention to detail with excellent analytical and problem-solving capabilities.
• Ability to perform effectively within complex, fast-paced project delivery environments.

Desired Skills

• Degree in engineering, construction management or related discipline, or equivalent experience.
• Experience working on nuclear or other highly regulated infrastructure projects.
• Familiarity with schedule analysis tools such as Acumen Fuse or equivalent software.
• Experience with 4D planning tools such as Synchro within major construction programmes.
• Knowledge of reporting tools such as Power BI and advanced Microsoft Excel capabilities.

Take the next step in your planning career by joining Assystem and contributing to one of Europe’s most ambitious nuclear infrastructure programmes. Work alongside industry-leading professionals, develop your expertise, and play a key role in delivering the future of clean energy.

What We Offer

Hybrid Working Opportunity

Flexible working hours

Pension scheme (8% company contribution / 4% personal contribution)

25 days’ paid annual leave + bank holidays + option to buy or sell days

Professional fees reimbursed

Employee referral scheme

Competitive Sick Pay - Support when you need it

Income Protection & 3x Salary Death-in-Service Cover

Free Digital Gym Access - Expert-led fitness classes

24/7 Employee Support Line - Mental health, financial & legal help

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.

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.