Senior Commissioning Engineer, Singapore

Senior Commissioning Engineer – Gradiant International Holdings Pte. Ltd. Singapore, Singapore – 5/21/26 – 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

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.

• Commissioning activities: execute and lead all stages of commissioning – pre‑commissioning, wet commissioning, performance testing, documentation, client handover, post‑commissioning support, troubleshooting.
• Engineering & documentation review: P&IDs, PFDs, mass balances, design basis reports, control philosophy, 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.

• 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 technologies:
  • Reverse Osmosis (RO): membrane loading, commissioning, operation, 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, 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.