Cost Manager - Sizewell C


Company:	Hays Specialist Recruitment
Salary:	Not specified
Hours:	Full-time
Location:	Leiston, IP16 4EW
Working pattern:	Hybrid - 3 days remote
Job type:	Permanent
Posting date:	4 Sept 2026
Closing date:	4 Oct 2026

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Summary

Your new company

You will be joining a high-profile, global specialist contractor operating across nuclear energy, defence and critical national infrastructure. This multi-accredited and industry-leading contractor works on some of the most complex and impactful programmes in science, security and sustainability, empowering people to grow, thrive and deliver meaningful change. As part of their continued growth, they are actively seeking a Cost Manager to join their growing Sizewell C team.

This is a full-time permanent position based in Leiston with hybrid and flexible working.

Your new role

As a Cost Manager, you will join the Project Management Office (PMO) and work closely with the Cost Lead and wider Project Controls team to deliver accurate, timely and insightful cost performance reporting. You will support effective cost management across the programme, ensuring robust forecasting, budget control and earned value analysis against project baselines.

Key responsibilities will include:

Monitoring and analysing project cost performance and Earned Value Management (EVM) metrics.

Supporting project teams with cost forecasting, Estimate at Completion (EAC), Estimate to Complete (ETC) and actual cost reporting.

Tracking expenditure against approved budgets and cost breakdown structures.

Supporting budget updates, forecasting activities and cost re-baselining exercises.

Reviewing change requests and ensuring cost data is accurately coded and aligned to project budgets.

Working collaboratively with Commercial, Finance and Project Controls teams to ensure accurate accruals and contract cost reporting.

Supporting the implementation and continuous improvement of cost management systems, processes and reporting tools.

Providing guidance and support to project stakeholders on cost management systems and best practice.

What you'll need to succeed

In order to be successful, you must have:

Experience in cost management within major programmes, complex construction projects or large-scale infrastructure environments

Strong knowledge of cost control, forecasting, cost analysis and earned value management

Experience using cost management software such as PRISM, EcoSys or Cobra

Excellent analytical, problem-solving and communication abilities

Full UK driving licence.

What you'll get in return

In return, you will receive:

Negotiable starting salary (dependent on experience)

Company car (salary sacrifice)

24 days' annual leave (option to buy up to 10 extra days) plus bank holidays

Company pension scheme (matched up to 10%)

Life assurance

Private medical insurance

Multiple family-friendly benefits

Hybrid (2/3 days' remote per week) and flexible working arrangements

Financial wellbeing perks and lifestyle benefits

Supportive and collaborative work environment

Clear pathways for professional growth and career progression

Opportunity to contribute to one of the UK's largest megaprojects and a cornerstone of Britain's Net Zero ambitions.

What you need to do now

If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.

If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

Please note: applicants must hold existing UK work authorisation; visa sponsorship cannot be provided for this position.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk

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