Do you want to play a key role in one of the UK's most challenging and rewarding nuclear programmes?

At Sizewell A, we're delivering a diverse portfolio of decommissioning and waste projects that directly contribute to hazard reduction, environmental stewardship, and the long-term future of our sites. As an Assistant Project Manager, you'll have the opportunity to make a tangible impact, taking ownership of work packages that help safely remove legacy plant and equipment, manage radioactive waste, and support the successful delivery of our decommissioning mission.

This is an exciting opportunity for a motivated and ambitious individual who enjoys solving complex problems, working with a wide range of specialists, and seeing projects through from concept to completion. You'll work alongside senior leaders, engineers, operations teams, contractors, and project professionals, gaining valuable experience across all aspects of project delivery while helping to shape the future of nuclear decommissioning.

Whether you're leading a discrete package of work or supporting a larger programme of activity, you'll be trusted with real responsibility from day one. In return, you'll gain exposure to technically challenging projects, opportunities for professional development, and the chance to build a rewarding career in a unique and highly regulated industry.

Please note the working hours are 07.25 – 17.00, Monday to Thursday, perfect for someone looking for a four-day working week.

What will you be doing

You will support the planning and delivery of decommissioning and waste management projects, helping to translate scope into clear, achievable plans and driving them through to completion. Day to day, this means coordinating activities, monitoring progress, and ensuring work remains aligned with agreed costs, schedules, quality requirements, and nuclear safety expectations.

Alongside this, you will work closely with engineering teams, construction representatives, operations personnel, waste specialists, contractors, and programme stakeholders to coordinate activities and resolve challenges as they arise. Success in this role comes from maintaining strong attention to detail, communicating effectively, and contributing to the safe and efficient delivery of programme objectives.

You will also:

• Support the planning, coordination and delivery of projects by contributing to project plans, schedules, milestones, monitoring activities, documentation, communications, meetings and the preparation of project deliverables.
• Apply project management processes and procedures in accordance with PD-025 NRS standards, ensuring compliance with regulatory, statutory and company requirements while supporting the identification, evaluation and resolution of project issues, risks and changes to scope, cost or schedule.
• Coordinate activities across project teams, engineering disciplines, contractors and stakeholders, maintaining effective communication and supporting delivery against established project baselines and programme objectives.
• Champion a safety-first culture by promoting Human Performance Error Prevention Tools, identifying and sharing Lessons Learned, and gaining authorisation to undertake Project Safety Reviews in radiologically controlled areas up to and including R4/C3 (including the ability to wear a respirator).
• Continuously develop technical knowledge and project management capability, proactively managing personal work assignments and supporting delivery across the wider Decommissioning Programme and associated work packages as required.

Who are we looking for

You will bring a solid technical or professional foundation, with the confidence and curiosity to develop your capability within a project delivery environment. Educated to HNC/D level or equivalent in a relevant discipline, you will have an interest in project management and programme delivery. An understanding of project management principles would be advantageous, with candidates ideally holding, or willing to work towards, a recognised qualification such as APM PMQ.

Just as important is your approach. We are looking for someone who is proactive, accountable, and committed to delivering high standards of performance in a safety-focused environment. You will be a strong problem solver with a collaborative mindset, capable of building positive working relationships and adapting to changing priorities. You will take ownership of your work, communicate progress openly, and contribute positively to the successful delivery of decommissioning and waste programme objectives.

You will have:

• Relevant qualifications (HNC/D, NVQ or equivalent) in an engineering, scientific, technical, or project-related discipline with a project management qualification such as APM PFQ, or a willingness to achieve one.
• A proactive, adaptable, and solutions-focused approach to problem solving with the ability to build trusted relationships with a wide range of stakeholders and confidence working within a highly regulated environment.
• An interest in decommissioning, radioactive waste management, environmental stewardship, and programme delivery.
• A willingness to develop project management capability and grow within the role.