Assistant Project Manager in Bristol

Sizewell C’s business is to design, finance, construct, commission, operate, maintain, and eventually decommission the nuclear power plant and related infrastructure at Sizewell C in Suffolk. While the Company is in the construction phase, the Board’s principal focus is on the development and construction of Sizewell C on time, on budget, and to the highest quality and safety standards.

Sizewell C is economically regulated by OFGEM under the RAB model similar to other UK electricity distribution networks and Thames Tideway. The construction strategy is to replicate the design of Hinkley Point C, using the majority of the same supply chain, but innovating in the way it is delivered to achieve savings in time and cost of around 20%.

The Chief Commercial Officer will need to be guided by and incorporate lessons learned from the Hinkley Point C commercial delivery to achieve Sizewell C’s ambition. Following Financial Completion and Revenue Commencement, Sizewell C is fully funded and is owned by the Secretary of State for Energy Security and Net Zero representing HM Government, La Caisse, Centrica, EDF and Amber Infrastructure.

Join one of the UK’s most ambitious infrastructure programmes and help deliver the future of clean energy. Sizewell C is entering a critical delivery phase, creating exciting opportunities for Assistant Project Managers to join the Engineering & Delivery function across several major programme areas. This is an outstanding opportunity for developing project professionals to build experience on one of Europe’s largest and most complex infrastructure projects, working alongside experienced delivery teams within a highly regulated and technically challenging environment.

You’ll play a key role in supporting the delivery of engineering, procurement and manufacturing activities that will help power around 6 million homes with low‑carbon electricity for generations to come.

As an Assistant Project Manager, you will support the successful delivery of engineering work by the Responsible Designer (RD), alongside procurement, manufacturing and delivery of major contracts across the Sizewell C programme. Working closely with multidisciplinary teams including engineering, supply chain, quality, construction and suppliers, you’ll help drive progress across key work packages while developing valuable experience within a world‑class major programme environment.

A core focus of the wider Project Management team is advancing engineering maturity and securing critical supply chain capability through the maximum possible replication of the Hinkley Point C design, helping de‑risk delivery and improve programme efficiency.

Key Programme Areas

• Mechanical, Electrical & HVAC (MEH) – Supporting the development and mobilisation of the MEH Alliance delivery model, helping shape collaborative delivery strategies informed by lessons learned from Hinkley Point C.
• Nuclear Island (NI) – Supporting delivery across systems, buildings and contracts within the Nuclear Island programme, one of the most technically complex areas of the project.
• Civil Works – Supporting the development and delivery of major civil engineering work packages, including engineering, procurement, manufacturing, construction and commissioning activities.
• Conventional Island & Balance of Plant (CI/BOP) – Supporting the delivery of engineering contracts and helping ensure technical, commercial and programme requirements are achieved safely and efficiently.

What You’ll Be Doing

• Supporting the delivery of engineering studies and design activities across your programme area.
• Working with multidisciplinary teams to prepare manufacturing, construction and engineering contracts.
• Supporting procurement and supplier engagement activities.
• Helping manage interfaces across systems, contracts and programme areas.
• Supporting implementation of Sizewell C‑specific design changes into delivery packages.
• Assisting with the identification and management of technical risks and supply‑chain challenges.
• Supporting delivery activities to ensure work is completed safely, on time, within budget and to quality standards.
• Working closely with internal and external stakeholders including suppliers, contractors and engineering teams.
• Supporting lessons learned, knowledge capture and continuous improvement activities across the programme.
• Helping coordinate project activities within a matrix delivery environment.

Why Join Sizewell C?

Sizewell C is one of the UK’s most significant investments in clean energy infrastructure and one of the most exciting engineering projects in Europe. Backed by the UK Government and major international investors including EDF, Centrica, La Caisse and Amber Infrastructure, the project offers:

• Exceptional project scale and complexity.
• Long‑term career opportunities.
• Exposure to major infrastructure delivery.
• International collaboration.
• Structured development within a highly experienced team.
• The opportunity to contribute to the UK’s net‑zero ambitions.

What We’re Looking For

We’re interested in hearing from candidates with project engineering or project management experience within complex engineering or infrastructure environments. You’ll ideally bring:

• Experience supporting multidisciplinary engineering or procurement activities.
• Project management or project engineering experience across the project lifecycle.
• A background in mechanical, electrical, process, systems or civil engineering.
• Understanding of large‑scale industrial or infrastructure projects.
• Experience supporting contract procurement or supplier management activities.
• Strong communication and stakeholder management skills.
• An organised and collaborative approach to delivery.
• The ability to work effectively within multidisciplinary teams.

Experience within nuclear or other highly regulated industries would be advantageous, but is not essential. We’d also welcome:

• Chartered Engineer status or progress toward professional accreditation.
• Formal project management qualifications.
• Experience supporting EPCM or major project delivery environments.

What Makes You Successful Here

• Put health, safety and quality first.
• Be organised, proactive and delivery‑focused.
• Adapt quickly in a fast‑paced environment.
• Build strong relationships across teams and stakeholders.
• Enjoy solving problems and learning from experienced colleagues.
• Stay calm and focused under pressure.
• Be motivated by working on projects with real national impact.

At Sizewell C, you’ll gain experience on one of the UK’s largest and most complex infrastructure projects, working alongside industry‑leading professionals and contributing to a programme that will shape the country’s energy future. If you’re looking to accelerate your project management career in a challenging, rewarding and collaborative environment, we’d love to hear from you.