Senior Commissioning Engineer

Gradiant; Malaysia; Hybrid; MYR 180,000 - 360,000; Full time

Job summary

Gradiant is seeking a Senior Commissioning Engineer to lead commissioning for Industrial (ETP) and Municipal Effluent Treatment Plants and Water Treatment Plants, from pre-commissioning through handover. The role requires hands-on field work, strong cross-functional collaboration, and global project exposure.

Ideal candidates have a chemical/environmental/mechanical background with 5+ years of commissioning experience and willingness to travel up to 50% to site locations worldwide.

Qualifications

• Bachelor's degree in a relevant engineering field.
• Minimum 5 years hands-on field commissioning experience in water and wastewater systems.
• Willingness to travel internationally and work on overseas projects.

Responsibilities

• Execute and lead all stages of commissioning, from pre-commissioning to handover.
• Review P&IDs, PFDs, Mass Balances and design documentation with cross-functional teams.
• Prepare commissioning plans, procedures, test reports and SOPs.
• Provide technical feedback, diagnose issues, and support client acceptance tests.
• Collaborate with project teams to ensure on-time completion and closure.

Skills

5+ years field experience

Mandarin proficiency

Overseas project execution

Travel readiness 50%

RO membrane commissioning

Education

Bachelor’s degree in chemical/Environmental/Mechanical/Biochemical engineering

Job description

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.