Senior Buyer Projects (Water Sector)

Sigma Water Engineering; Puchong; On-site; MYR 90,000 - 120,000; Full time

Job summary

A leading water technology company in Puchong is seeking an experienced Senior Buyer to manage procurement activities for water and wastewater treatment projects. The ideal candidate will have 7–10 years of experience, focusing on project-based procurement, and must be adept at sourcing and managing supplier relationships. A Bachelor's degree in Supply Chain or a related field is preferred. This role offers a chance to contribute to critically important projects while working within a dynamic team environment.

Qualifications

• 7–10 years of procurement experience in water treatment, wastewater, or related industrial project environments.
• Demonstrated experience as a project buyer in EPC or project-based organizations.
• Strong understanding of water industry equipment and packages.

Responsibilities

• Manage procurement activities for water and wastewater treatment projects.
• Source, evaluate, and procure equipment, materials, and services.
• Resolve invoice discrepancies and maintain accurate procurement documentation.

Skills

Procurement experience in water treatment

Commercial and negotiation skills

Attention to detail

Communication skills

Education

Bachelor’s degree in Supply Chain, Engineering, Business

Tools

ERP systems (SAP or equivalent)

Job description

Sigma Water Engineering – Puchong New Village

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 at www.gradiant.com.

Position Summary

We are seeking an experienced Senior Buyer to support project execution within the water sector. The role is responsible for end-to-end procurement activities for water and wastewater treatment projects, including both strategic sourcing and hands‑on procurement administration. The successful candidate will have a strong background in project‑based procurement and be comfortable managing operational tasks such as purchase order issuance and supplier follow‑up.

Key Responsibilities

Project Procurement Execution

Manage procurement activities for assigned water and wastewater treatment projects from requisition through delivery

Source, evaluate, and procure equipment, materials, and services in accordance with project specifications, schedules, and budgets

Conduct commercial evaluations, lead negotiations, and support contract and purchase order awards

Collaborate closely with engineering, project management, quality, and logistics teams to ensure alignment throughout the project lifecycle

Procurement Administration

Prepare, issue, and manage purchase orders and subcontracts in the ERP system

Monitor supplier acknowledgements, delivery schedules, and expediting activities

Maintain accurate procurement documentation and ensure compliance with internal procedures and project requirements

Resolve invoice discrepancies, claims, and other commercial issues in coordination with finance and suppliers

Develop and maintain relationships with qualified suppliers relevant to water treatment projects

Track procurement costs against approved budgets and report variances and risks

Support cost optimization initiatives, value engineering, and alternative sourcing where appropriate

Qualifications & Experience

7–10 years of procurement experience in water treatment, wastewater, desalination, or related industrial project environments

Demonstrated experience as a project buyer within EPC, design‑build, or project‑based organizations

Strong understanding of water industry equipment and packages (mechanical, electrical, instrumentation, membranes, chemicals, packaged systems)

Experience working with ERP systems (SAP or equivalent preferred)

Strong commercial, negotiation, and contract management skills

High level of accuracy and attention to detail

Ability to manage multiple priorities in a project‑driven environment

Clear and professional communication skills

Willingness to perform both strategic and administrative procurement tasks as required

Education

Bachelor’s degree in Supply Chain, Engineering, Business, or a related field preferred