Interim Senior Cost Estimator - Nuclear & Energy Projects (Outside IR35)

Contract Type: Interim / Freelance
IR35 Status: Outside IR35
Availability: Immediate Start Preferred
Location: Hybrid / Remote with occasional site or client visits
Duration: 6-12 months (with potential for extension)
Day Rate: Competitive, depending on experience
Sector: Nuclear, Energy, Infrastructure
Client Type: Leading Engineering & Project Consultancy

Role Overview:

I'm seeking an experienced Interim Cost Estimator to support a portfolio of high-value infrastructure projects in the nuclear and wider energy sector. Working on behalf of a leading consultancy, the successful candidate will provide immediate commercial and estimating support across the full project lifecycle - from early-stage feasibility through to detailed design and delivery.

This is a freelance / contract role outside IR35, suited to an individual who is immediately available and has a proven track record working on complex construction or engineering projects.

Key Responsibilities:

• Produce robust and defensible cost estimates for major energy infrastructure and nuclear projects (new build, decommissioning, power generation).

• Liaise with internal teams and client-side stakeholders to understand technical scope, delivery methodology, and project objectives.

• Provide input to cost risk analysis, sensitivity studies, and contingency assessments.

• Support procurement activities with cost-based input into tendering and contractor evaluation.

Required Experience:

• Substantial experience as a cost estimator, quantity surveyor, or commercial lead in large capital projects.

• Track record of delivering on major infrastructure or industrial schemes in the nuclear or energy sectors.