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Company: Worley Primary Location PER-LM-Lima Schedule Full-time Employment Type: Employee Job Posting Mar 9, 2026 Unposting Date Ongoing Building on our past. Ready for the future Worley is a global professional services company of energy, chemicals and resources experts. We partner with customers to deliver projects and create value over the life of their assets.

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We’re bridging two worlds, moving towards more sustainable energy sources, while helping to provide the energy, chemicals and resources needed now.

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Responsibilities

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- Development, validation, and stewardship of capital cost (CAPEX) estimates for large, complex mining and industrial projects delivered under EPC and EPCM execution models - Lead the preparation of order-of-magnitude, conceptual, pre-feasibility, feasibility, and definitive CAPEX estimates in line with AACE Class 5 through Class 1 standards - Ensure estimates are developed using appropriate methodologies, benchmarks, factored and detailed approaches, consistent with project phase and data maturity - Develop and document estimate bases, assumptions, exclusions, qualifications, and methodologies - Validate estimate completeness, accuracy, and alignment with scope definition, execution strategy, contracting approach, and schedule - Support and participate in estimate reviews, peer reviews, audits, and stage‑gate approvals - Align estimating outputs with risk assessments, escalation models, indirects, and allowances - Interface closely with Project Controls, Engineering, Procurement, Construction, and Commercial teams to ensure cost alignment across all disciplines - Support development of cash flow forecasts, manning curves, and cost phasing aligned with project schedules - Provide expert input to change management, trend analysis,



and cost forecasting, as required - Support development of cost risk assessments, including identification of cost drivers, uncertainties, and opportunities - Assist in defining appropriate contingency levels using deterministic and probabilistic methods - Collaborate with risk management teams to ensure cost and schedule risks are coherently reflected in estimates - Act as a lead estimator for proposals, studies, and execution phases for mid- to large‑scale projects - Support vendor and supplier cost evaluations, benchmarking, and negotiation strategies - Communicate estimate outcomes clearly to clients and senior leadership, including confidence levels and key sensitivities Requirements:
- Minimum 15+ years of progressive estimating experience on large mining, minerals processing, or industrial infrastructure projects - Formación Académica, Acreditaciones, Entrenamiento - Experience in Mining Infrastructure and Water Projects - Experience in EPC and EPCM projects - Degree or diploma in Engineering, Construction Management, Quantity Surveying, Business, or a related discipline - Demonstrated experience preparing CAPEX estimates across multiple project phases (studies through execution)



- Strong working knowledge of AACE International Recommended Practices and estimate classification systems - Proven experience in EPC and EPCM mining projects in Peru Competencias Personales:
- Support development and continuous improvement of estimating procedures, templates, work instructions, and databases - Share estimating knowledge and lessons learned across the organization Other Skills: Autonomy, Entrepreneurial Spirit within work, capable of working in a integral environment.

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Project Management

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Skills.

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Intermediate English

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Level. If you need any accessibility adjustments, please make sure to mention it in your application. Moving forward together We’re committed to building a diverse, inclusive and respectful workplace where everyone feels they belong, can bring themselves, and are heard.

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We provide equal employment opportunities to all qualified applicants and employees without regard to age, race, creed, color, religion, sex, national origin, ancestry, disability status, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status or any other basis as protected by law. We want our people to be energized and empowered to drive sustainable impact. So, our focus is on a values‑inspired culture that unlocks brilliance through belonging, connection and innovation.

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And we're not just talking about it; we're doing it. We're reskilling our people, leveraging transferable skills, and supporting the transition of our workforce to become experts in today's low carbon energy infrastructure and technology. Whatever your ambition, there’s a path for you here.

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And there’s no barrier to your potential career success. Join us to broaden your horizons, explore diverse opportunities, and be part of delivering sustainable change.

Postúlate en Kit Empleo: kitempleo.pe/empleo/wkcq8

📌 Senior Manager, Estimating (Lima)
🏢 Worleyparsons
📍 Lima