Build and maintain cost modeling capabilities such as clean-sheet and should-cost models across priority packages, Develop and manage a central cost fact base including benchmarks, marked indices, and historical project data, Provide analytical support to value engineering, procurement, and commercial decision-making, Standardize modelling approach, templates, documentation and model governance within the function, Support value-engineering workshops and contract optimizations / negotiations, Develop detailed clean-sheet cost models for key components and priority spend categories and packages, Build and maintain benchmark database and benchmark packs, ensure consistency of assumptions and sources, include trend analysis, Develop scenario tools to model cost drivers and sensitivities to support decision points and negotiation preparation, Prepare structured cost analysis outputs and reports for stakeholders, Maintain documentation standards: decision logs, tracking, and a library of tools / standards, Organize and support value engineering workshops with disciplines engineers and packages, commercial teams, Support contract optimizations and negotiations with analytical results showing technical cost levers, pricing implications and negotiation options