Full job description When joining Sizewell C, you may wonder why you are contacted by colleagues with an EDF email or see the EDF logo on portals that you access and/or documentation you receive; this is because we have partnered with EDF for the provision of a number of support services whilst we complete a successful transition out of the EDF group.
At Sizewell C we encourage and embrace diversity and how it can improve our experience and performance at work.?It is a requirement that those who join us have the right to work in the UK. Whilst sponsorship may be a possibility that we can explore, we are fully committed to local recruitment where possible, and those already holding the right to work in the UK. ?
To be appointed to this role, you will need to meet the criteria for Security Vetting, which will, ordinarily, require you to have been a resident of the UK for at least three of the past five years.
Site Operations Infrastructure - Assistant Project Manager

Location: Sizewell C, Leiston, Suffolk (5 days a week on-site)

Contract: Permanent, full - time.
Salary: £55,000 - £65,000 dependent on experience.
Benefits:
5% CIP bonus
28 days holiday, plus bank holidays
Contributory pension of up to 7.5% employee/15% employer
Ongoing professional development
Other lifestyle benefits
Closing day: Tuesday 22 September 2026.
Help Deliver One of the UK’s Largest Infrastructure Projects
Sizewell C is at the heart of the UK’s clean energy future. We’re looking for an ambitious and proactive Assistant Project Manager to join our Site Operations Infrastructure team and play a key role in supporting the delivery and maintenance of critical infrastructure across the Sizewell C project.
This is an exciting opportunity for someone with experience in highways, infrastructure maintenance, construction operations, or major project delivery environments who thrives in a fast-paced and highly regulated setting.
The Opportunity
Reporting to the Site Operations Service Delivery Manager, you will support the day-to-day coordination and management of infrastructure operations and maintenance contracts that enable the safe and efficient running of the Sizewell C project.
You will work closely with contractors and stakeholders across a diverse range of activities, including:
*Highway maintenance and minor civils works
*Temporary and permanent infrastructure assets
*Site access roads and pedestrian routes
*Security access plazas
*Temporary buildings and facilities
*Utilities and support infrastructure
*Off-site property maintenance activities
As part of the Site Operations team, you’ll help ensure services are delivered safely, efficiently, on time and within budget while supporting a peak construction workforce of approximately 8,000 people.
Key Responsibilities
*Support the management of infrastructure operation and maintenance contracts with values of up to £10m annually.
*Coordinate contractors delivering construction, maintenance and operational activities across site.
*Ensure compliance with all statutory, regulatory and site-specific requirements.
*Monitor contractor performance against KPIs, SLAs, safety standards and project objectives.
*Support budget management, forecasting and financial reporting activities.
*Manage stakeholder relationships across multiple functions and disciplines.
*Assist with temporary works design coordination and design change management.
*Ensure construction and maintenance activities are effectively integrated with surrounding contractors and project teams.
*Contribute to weekly progress reviews and recovery planning where necessary.
*Support monthly reporting on safety, performance, financials and future planning.
*Champion a collaborative "one team" approach across contractors and project stakeholders.
*Promote and maintain the highest standards of health, safety and environmental performance.
About You
We’re looking for a motivated individual who enjoys solving problems, managing competing priorities and working collaboratively across large-scale projects.
Essential Experience & Skills
*Experience working within a highways, infrastructure, construction or service-led operational environment.
*Proven experience delivering work safely in a highly regulated setting.
*Experience managing contractors, teams or service providers.
*Strong IT, communication and stakeholder management skills.
*Experience within large, complex projects.
*Ability to work effectively in a dynamic and fast-paced environment.
*Strong organisational and problem-solving skills.
*Confidence to make decisions and manage changing priorities.
*Collaborative approach with a commitment to building positive working relationships.
Desirable Qualifications & Experience
*HND, HNC or equivalent qualification in a related discipline.
*Experience with road and network construction projects.
*Experience delivering modular building projects.
*Experience managing vehicle and pedestrian access infrastructure.
*Knowledge of construction quality assurance and quality control processes.
*Experience using Microsoft Project and Microsoft Office applications.
*AutoCAD experience.
*Experience developing and managing project budgets.
Apply Now!
If you’re ready to make an impact, work with purpose, and join one of the most ambitious infrastructure projects in the UK, we want to hear from you.
Let’s build a cleaner, greener future together.