Senior Commissioning Engineer

Gradiant International Holdings Pte. Ltd.

Singapore, Singapore

Posting Start Date

9/24/26

Date format: mm/dd/yy

Function

Project Management

Gradiant is a Different Kind of Water Company. With a full suite of differentiated and proprietary end-to-end solutions for advanced water and wastewater treatment powered by the top minds in water, the company serves its clients’ mission-critical operations in the world’s essential industries, including semiconductors, pharmaceuticals, food & beverage, lithium and critical minerals, and renewable energy. Gradiant’s innovative solutions reduce water used and wastewater discharged, reclaim valuable resources, and renew wastewater into freshwater. The Boston-headquartered company was founded at MIT and has over 1,400 employees worldwide. Discover us at www.gradiant.com

Role 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.

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

Trouble Shooting

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, and O&M Manuals

Prepare daily, weekly, and monthly progress reports and 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

Requirements

Bachelor’s degree in chemical engineering, Environmental Engineering, Mechanical Engineering, or Biochemical Engineering. Other qualifications may be considered based on relevant experience.

Minimum 5 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 (50% travel) when required

Experienced in the following technology

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)

Dissolved Air 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