Assystem is an international company with one mission: accelerate the energy transition around the world.
Every day, our 7,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.
We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.
Drawing on more than 55 years’ experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked third in the world for nuclear engineering.
To ensure a viable, efficient, and reliable energy future for all
Job Description
Join Our Growing Defence Team at Assystem – Project Planner Opportunity!
As our Defence account continues to expand, Assystem is on the lookout for a dynamic and self-motivated Project Planner to help drive successful project delivery within our evolving Project Management Office (PMO).
Partnering closely with our Defence Project Managers, you’ll play a key role as the go-to expert for all planning activities across our Defence portfolio. If you’re passionate about delivering complex, high-impact projects – we want to hear from you!
Location: Any Assystem UK office
Working Model: Hybrid – flexible mix of home and office working, with ad-hoc travel to client and Assystem offices
Lead Project Planning – Develop and manage schedules internally and with clients
Coordinate Work Packages – Track progress, plan resources, and manage sub-contractor activities
Approve Sub-Contractor Programmes – Review for quality and alignment with overall schedule
Stakeholder Interface – Monitor and report on project progress, changes, risks, and opportunities
Support Proposals – Provide input on planning and manhour estimates for future work
Deliver Reporting – Produce accurate metrics, including critical path analysis, for the Defence Infrastructure Lead Team
What You Bring
Tech-Savvy – Confident in MS Office, particularly Excel and MS Project
Detail-Oriented & Driven – Self-motivated, deadline-focused, and thrives with minimal supervision
️ Clear Communicator – Able to summarise complex data clearly and confidently
️ Analytical Eye – Skilled at assessing sub-contractor inputs and programme accuracy
Precision Focused – Accuracy and attention to detail are second nature
My profile
Your Qualifications
Degree preferred (or equivalent experience)
Project Management certification (e.g. APM) is a plus
️ Proven experience as a Project Planner on NEC4 contracts, particularly Options A & C (essential)
️ Strong background in major infrastructure design and build projects (desirable)
️ Experience in the Nuclear or Defence Industry is a major advantage
Ready to plan your next big move?
Apply now to be part of an innovative team delivering some of the UK’s most exciting Defence infrastructure projects!
Additional information
Home office location can be Derby, Sunderland, Glasgow, Blackburn or Bristol
Due to the nature of this role the successful candidate will require Security clearance. To gain this you will be required to be aSole UK national,
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.
Are you a prospective or recent graduate?
Assystem offers you the opportunity to join our Switch to Grow UK Graduate Scheme, where you’ll gain hands on experience in engineering, digital services, and project management by working on some of the world’s most critical energy projects.
Be part of the challenge of the century; accelerating the switch to low carbon energy!
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