Senior Commissioning Engineer

Gradiant; Singapore; On-site; SGD 78,000 - 123,000; Full time

Job summary

Gradiant International Holdings Pte. Ltd. is seeking a Senior Commissioning Engineer to lead commissioning activities for Industrial and Municipal water treatment plants, from pre-commissioning to handover.

You will work with Mechanical, Electrical, Instrumentation, and Control teams to ensure safe, efficient project delivery. Requires a Bachelor's in a relevant engineering discipline, at least 5 years' field commissioning experience, and willingness to travel up to 50% to global sites; Mandarin

Qualifications

• 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 to support China and Taiwan in addition to other project sites globally.
• Ability to travel to project sites locally and globally (50% travel) when required.
• Experience with RO, UF, DAF, MBR/MBBR, and related equipment commissioning.

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 matrices; coordinate with Mechanical, Electrical, Instrumentation and Control teams; prepare commissioning plans, checklists, procedures and O&M manuals; maintain progress reports and punch lists.
• Technical Support & Troubleshooting: Data analysis to diagnose equipment and process issues; identify defects in design, installation, and functionality; support Site Acceptance Tests and Performance Testing.
• Project Support: Collaborate with project teams to ensure smooth project execution and closure.

Skills

Mandarin proficiency

Travel willingness

Field experience

Education

Bachelor's degree in chemical engineering OR Environmental/Mechanical/Biochemical Engineering

Job description

Gradiant International Holdings Pte. Ltd.

Posting Start Date: 8/26/26

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 atwww.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

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.