About the job

Gradiant is a global solutions provider for advanced water and wastewater treatment. We are a different kind of water company. With a full suite of differentiated and proprietary end-to-end solutions, powered by the top minds in water, the company serves its clients' mission-critical operations in the world's essential industries. 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 1,000 employees worldwide. Singapore is our Regional Headquarters and home to our Global Innovation Center. Learn more at gradiant.com.

Job Title: R&D Intern – Process & Applications Engineering (Water Treatment)Internship Period: June – December 2026 (Full Semester Preferred)Location: 1 Cleantech Loop #03-05, Singapore 637141

Job Summary

The intern will support the Applications and Process Engineering team in developing, testing, and optimizing wastewater treatment solutions for municipal, industrial, and specialized clients.

This role provides hands-on exposure to physical, chemical, and advanced treatment technologies, including coagulation-flocculation, membrane systems (UF/NF/RO), oxidation processes (AOP/Fenton), and zero liquid discharge (ZLD).

The intern will be involved in lab-scale experiments, data analysis, and proposal preparation to deliver technically sound and sustainable treatment solutions that meet regulatory requirements.

Key Responsibilities

Process Support

• Assist in characterization of wastewater samples (e.g., COD, TSS, pH, TOC, conductivity, and ions)

• Support bench-scale and pilot-scale experiments for coagulation, oxidation, adsorption, and membrane filtration

• Collect and interpret performance data to evaluate treatment efficiency

Design & Documentation

• Prepare process flow diagrams (PFDs), mass balance calculations, and preliminary process designs

• Draft technical reports, test summaries, and proposal inputs for client applications

• Maintain experimental records, reagent inventories, and sample logbooks

Analytical & Laboratory Work

• Operate laboratory instruments (e.g., TOC analyzer, IC, pH meter)

• Support sample preparation for advanced analyses such as LC-MS/MS or ICP-OES (if applicable)

Requirements

• Background in Chemical Engineering, Environmental Engineering, Chemistry, or related disciplines

• Knowledge in mass transport, membrane separation, and inorganic/organic chemistry is an advantage

• Experience in water chemistry or water testing is a plus

What We’re Looking For

• Ability to work in a fast-paced, dynamic environment and handle multiple tasks

• Strong communication and presentation skills

• Curious, proactive, and eager to learn

• Strong interest in water and wastewater treatment

• Comfortable working in a semi-autonomous environment