Senior Estimator – Energy, Offshore & EPC

KBR; Greater London; On-site; GBP 90,000 - 135,000; Full time

Job summary

KBR is seeking a Principal Estimator to lead the preparation of capital cost estimates for major energy, chemicals and energy transition projects. You will manage estimating scope, methodologies and deliverables, developing auditable cost data across onshore and offshore contexts, coordinating with multi‑discipline teams and senior leadership.

You will mentor estimators, benchmark costs, and support risk analyses and independent reviews to drive robust investment decisions.

Qualifications

• Extensive estimating experience in energy, chemicals, offshore and onshore sectors.
• Experience preparing estimates for studies, FEED and EPC projects.
• Proficiency with estimating methodologies and tools including ACCE.

Responsibilities

• Lead the preparation and delivery of all classes of capital cost estimates.
• Define estimating scope, methodologies, and deliverables for projects.
• Develop auditable, risk‑adjusted estimates aligned with procedures.
• Establish estimate assumptions: equipment pricing, quantities, escalation, contingencies.
• Develop cost estimates aligned to WBS and CBS.
• Source labour rates and productivity factors for global projects.
• Conduct benchmarking, cost analysis, and estimate validation.
• Maintain estimate documentation for auditability.
• Support independent estimate reviews and peer assessments.
• Contribute to project cost risk assessments and uncertainties.
• Coordinate inputs from engineering, procurement, and construction teams to ensure compliance.
• Lead, mentor, and supervise estimators on projects.
• Report to Project Managers and Estimating Director.

Skills

Estimating leadership

Project cost estimation

Stakeholder management

ACCE software

Leadership of teams

Offshore/onshore experience

Tools

ACCE software

Job description

KBR is seeking a Principal Estimator to lead the preparation of capital cost estimates for major energy, chemicals and energy transition projects. You will manage estimating scope, methodologies and deliverables, developing auditable cost data across onshore and offshore contexts, coordinating with multi‑discipline teams and senior leadership.

You will mentor estimators, benchmark costs, and support risk analyses and independent reviews to drive robust investment decisions.