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. Singapore is home to our regional headquarters and Global Innovation Centre. Discover us at gradiant.com.

Role Summary

We’re looking for a senior proposal professional with strong technical and commercial experience in water and wastewater treatment — ideally with exposure to industrial wastewater, desalination, and ZLD projects.You’ll lead proposal development across APAC, with a particular emphasis on Southeast Asia, driving the full bid process from RFQ to submission. The role demands both technical depth and commercial sharpness — someone who can shape a winning strategy as much as write a solid proposal.

Responsibilities

• Lead the development of techno-commercial proposals for industrial water and wastewater projects, including desalination and ZLD systems.
• Interpret RFQs, tenders, and customer specifications; define the proposal strategy, scope, and competitive positioning.
• Coordinate across engineering, project management, procurement, and finance to deliver complete, compliant bids on time.
• Prepare cost estimates, technical write-ups, schedules, and risk assessments.
• Participate in bid clarifications, client presentations, and negotiations when required.
• Maintain and refine pricing tools, templates, and cost databases to improve consistency and turnaround time.
• Support regional business development with market intelligence and bid/no-bid inputs.

Requirement

• 10+ years of experience in the water industry — preferably in EPC, OEM, or technology-driven companies.
• Demonstrated success developing proposals for industrial wastewater, ZLD, and desalination projects.
• Strong technical foundation in process design and cost estimation.Engineering degree in Chemical, Environmental, or Mechanical Engineering (or equivalent).
• Familiar with Southeast Asia’s industrial and regulatory landscape, and comfortable navigating diverse markets.Excellent communication, coordination, and commercial acumen.
• Hands-on experience in key Southeast Asian markets (e.g. Singapore, Malaysia, Thailand, Vietnam, Indonesia, Philippines).Exposure to membrane, thermal, or hybrid treatment systems.
• Strategic mindset with attention to detail and the ability to juggle multiple bids.
• Self-driven, collaborative, and thrives in fast-paced, cross-cultural environments.
• Able to travel extensively (50%) within APAC 

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.