Position Overview
The Senior Commissioning Engineer is responsible for executing and leading commissioning activities for Industrial (ETP) and Municipal Effluent Treatment Plants (STP) and Water Treatment Plants (UPW/Desalination). The role covers the full commissioning lifecycle—from pre-commissioning to handover—ensuring safe, efficient, and high-quality project delivery.

Job Responsibilities
Commissioning Activities

Execute and lead all stages of commissioning: 

• Pre-Commissioning 
• Wet Commissioning 
• Process Commissioning 
• Performance Testing 
• Documentation and Client Handover 
• Post-Commissioning Support 
• Troubleshooting 
• Engineering & Documentation 
• Review P&IDs, PFDs, Mass Balances, Design Basis Reports, Control Philosophy, and Cause & Effect Matrices. 
• Work closely with Mechanical, Electrical, Instrumentation, and Control teams to ensure installations meet design intent. 
• Prepare and Review:
• Commissioning Plans
• Checklists 
• Procedures 
• Performance Test Procedures and Reports 
• SOPs 
• O&M Manuals 
• Prepare daily, weekly, and monthly progress reports. 
• Manage commissioning punch lists. 
• Technical Support & Troubleshooting 
• Conduct data analysis to diagnose equipment and process issues. 
• Identify defects in design, installation, and functionality of equipment, piping, instruments, and controls. 
• Provide technical feedback and ensure closure of identified issues. 
• Support Site Acceptance Tests and Performance Testing with client endorsement. 
• Project Support 
• Collaborate with project teams to ensure smooth project execution and closure. 

Technical Skill Sets Required

Reverse Osmosis (RO)

• Membrane loading, commissioning, operation, and troubleshooting
• Anti-scalant selection and dechlorination
• Cleaning and sanitization (CIP/SIP)
• LSI, SDI analysis, and membrane profiling
• Troubleshooting & Training

Other Treatment Processes

• Ultrafiltration(UF)
• DissolvedAir Flotation (DAF)
• MBR /MBBR
• Clarifiers
• Ammonia Strippers
• Filter Press and Centrifuge
• Crystallizers and Evaporators

Equipment Commissioning

• Process pumps and chemical dosing pumps
• Compressors, blowers, and mixers
• Heat exchangers
• Polymer preparation and dosing systems

Chemical & Process Operations

• Coagulation and flocculation principles

Software Skills

• MS Office (Excel, PowerPoint, Word)
• Microsoft Project
• Proficiency in written and spoken English

Requirements

• Bachelor’s Degree in Chemical Engineering, Environmental Engineering, Mechanical Engineering, or Biochemical Engineering. Other qualifications may be considered based on relevant experience. 
• Minimum 6 years of hands-on field experience in commissioning of water and wastewater treatment systems. 
• Proven experience in execution of overseas projects is highly preferred. 
• Strong proficiency in Mandarin (both written and spoken) is preferred as the role would support China and Taiwan in addition to other project sites globally. 
• Ability to travel to project sites locally and globally (up to 50% travel) when required.