LEAD MECHANICAL ENGINEER

Archi Indonesia; Indonesia; On-site; IDR 900,000,000 - 1,500,000,000; Full time

Job summary

Archi Indonesia is seeking a highly experienced Lead Mechanical Engineer for the Toka Expansion Project in Indonesia. You will oversee all mechanical engineering activities from feasibility through commissioning, ensuring compliance with international standards and Indonesian regulations.

The role requires 12–15 years in mineral processing or heavy industry and at least 5 years as lead on brownfield expansions.

Qualifications

• Bachelor's degree in Mechanical Engineering is required.
• 12–15 years of mechanical engineering experience in mineral processing or heavy industrial projects.
• Minimum 5 years as Lead Mechanical Engineer on brownfield expansion projects.

Responsibilities

• Lead all mechanical engineering activities for the Toka Expansion Project from Feasibility Study through Commissioning.
• Develop and maintain Mechanical Basis of Design and Mechanical Engineering Execution Plan.
• Oversee preparation and review of equipment specs, datasheets, PMS, Plot Plans, MTO, and technical bid evaluations.
• Ensure mechanical designs comply with ASME, API, ISO and Indonesian regulations.

Skills

Leadership

Communication

Stakeholder management

Problem solving

English proficiency

Education

Bachelor's degree in Mechanical Engineering

Master's degree preferred

Tools

SmartPlant 3D

AutoCAD

Job description

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Duties

• Lead all mechanical engineering activities for the Toka Expansion Project from Feasibility Study, FEED, Detailed Engineering Design, Procurement, Construction, through Commissioning.
• Develop and maintain the Mechanical Basis of Design and Mechanical Engineering Execution Plan.
• Oversee the preparation and review of key engineering deliverables, including equipment specifications and datasheets, equipment lists, Piping Material Specifications (PMS), Plot Plans, General Arrangement Drawings, Material Take-Off (MTO), and technical bid evaluations.
• Ensure all mechanical designs comply with international standards (ASME, API, ISO) and applicable Indonesian regulations.
• Provide technical leadership during feasibility studies, including evaluation of plant location alternatives.
• Lead mechanical engineering activities during the FEED phase and ensure deliverables meet project schedule and cost estimate targets.
• Review engineering deliverables from consultants and contractors and coordinate with Process, Piping, Civil, Electrical, and Instrumentation disciplines.
• Ensure seamless brownfield integration between the existing operating plant and the expansion facilities.
• Provide mechanical engineering support during construction, pre-commissioning, and commissioning activities.
• Review and approve vendor drawings, installation procedures, and testing plans for critical mechanical equipment.
• Participate in technical evaluations and procurement of major mechanical equipment, including mills, crushers, pumps, thickeners, agitators, conveyors, and other process equipment.
• Manage the technical aspects of long-lead mechanical equipment procurement.
• Identify and mitigate mechanical engineering risks while ensuring compliance with Safety in Design (SiD), HAZOP, and QA/QC requirements.
• Support value engineering initiatives to optimize project cost, quality, reliability, and maintainability.
• Perform any other duties as assigned.

Requirements

• Bachelor's Degree in Mechanical Engineering (Master's Degree preferred).
• Minimum 12-15 years of experience in mechanical engineering for mineral processing or heavy industrial projects.
• Minimum 5 years of experience as a Lead Mechanical Engineer on brownfield expansion projects.
• Strong experience with gold processing equipment, including mills, crushers, thickeners, pumps, agitators, conveyors, and other process equipment.
• Proven experience in FEED and Detailed Engineering Design for processing plant expansion projects.
• Strong knowledge of ASME, API, ISO, and relevant Australian and Indonesian engineering standards.
• Previous experience working in Indonesia or Southeast Asia is a advantage.
• Experience with brownfield tie-ins and modular construction is preferred.
• Proficient in SmartPlant 3D, AutoCAD, or equivalent engineering software.
• Strong leadership, communication, stakeholder management, and problem-solving skills.
• Fluent in both spoken and written English.
• Willing to work under a fixed-term project contract.
• Awareness of company safety and environmental standards.