Manager Process

About the Role

Larsen & Toubro is seeking a Manager Process to join their team in Riyadh, Saudi Arabia. This full-time role involves managing engineering design, process development, technical analysis, and project execution for seawater Reverse Osmosis (RO) desalination systems. The position requires 5-10 years of relevant experience.

Engineering Design and Process Development

• Develop mass and energy balances, Process Flow Diagrams (PFDs), and Piping and Instrumentation Diagrams (P&IDs) for seawater RO desalination systems.
• Design and size RO trains, pumps, pretreatment units (coagulation, media filtration, Ultrafiltration), and post-treatment systems (remineralization, CO2 dosing).
• Prepare detailed specifications for equipment including pressure vessels, membranes, dosing systems, and chemical treatment units.
• Analyze and optimize membrane performance using specialized software.
• Perform hydraulic calculations for multiport vessels and high-pressure piping networks.

Technical Analysis and Modeling

• Conduct system simulations to predict performance under varying feedwater conditions.
• Perform recovery, energy consumption, and membrane fouling rate analysis.
• Evaluate energy recovery devices (ERDs) and design pressure exchanger systems.
• Review and analyze laboratory data, pilot trials, and membrane autopsy reports.

Project Execution and Documentation

• Lead or review engineering deliverables such as design reports, datasheets, Bills of Quantities (BOQs), and technical specifications.
• Coordinate interdisciplinary interfaces with civil, electrical, instrumentation, and mechanical teams.
• Participate in HAZOP studies, design reviews (including 3D model reviews and Reliability, Availability, Maintainability studies), and risk assessments.

Commissioning and Troubleshooting

• Support Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT), and commissioning activities.
• Diagnose and resolve process bottlenecks, membrane fouling, scaling, or plant underperformance issues.
• Train operations teams on membrane cleaning procedures (Clean-in-Place), energy optimization, and water quality control.

Experience Required

Candidates should possess 5-10 years of experience in a relevant field, demonstrating a strong background in process engineering for desalination systems.