Senior Commissioning Engineer

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

Senior Commissioning Engineer

Role Overview

The Senior Commissioning Engineer is responsible for executing and leading commissioning activities for Industrial Effluent Treatment Plants (ETP), Municipal Sewage 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
• 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.
• 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.

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 (up to 50% travel) when required.

Experience in the Following Technologies

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 and training

Other Treatment Processes

• Ultrafiltration (UF)
• Dissolved Air Flotation (DAF)
• MBR / MBBR
• Clarifiers
• Ammonia Strippers
• Filter Press and Centrifuges
• 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

Gradiant is an equal opportunity employer. Qualified applicants will be considered without regard to race, color, religion, creed, gender, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class.