Water Treatment Engineer (Liquid Cooling Systems)

ZTE Indonesia; Karawang; On-site; IDR 180,000,000 - 300,000,000; Full time

Job summary

ZTE Indonesia is seeking a Water Treatment Engineer to manage water quality, chemical dosing, and operation of liquid cooling systems in data centers. You will monitor and optimize cooling water quality, supervise dosing strategies, and collaborate with HVAC teams to ensure safe and efficient plant operations.

The role requires 3+ years in industrial circulating water treatment, knowledge of CDUs and plate heat exchangers, and basic English proficiency for overseas projects.

Qualifications

• Bachelor’s degree in a related engineering field.
• Minimum 3 years of experience in industrial circulating water treatment.
• Familiarity with water quality standards for circulating cooling water and chemicals used.
• Knowledge of CDUs, cooling towers, and plate heat exchangers.
• Ability to perform water quality testing and chemical dosing.
• Proficient in Microsoft Office and data analysis.
• Basic English reading/writing; daily communication for overseas projects.

Responsibilities

• Oversee water quality monitoring and regulation in data center cooling systems.
• Develop and implement chemical dosing strategies to prevent corrosion, scaling, and microbial growth.
• Inspect, maintain, and troubleshoot water treatment equipment and systems.
• Perform regular water quality testing and prepare comprehensive reports.
• Collaborate with HVAC, plumbing, and CDU teams to improve system-wide water quality and safety.
• Ensure safety and environmental compliance in handling chemicals and processes.
• Maintain water treatment manuals, logs, and project documentation.

Skills

Water treatment engineering

Water quality testing

Chemical dosing

Cooling systems knowledge

Data center experience

English communication

Safety awareness

Education

Bachelor’s degree or above in Environmental/Chemical/Water Engineering or related field

Tools

Microsoft Office

Job description

Job Title: Water Treatment Engineer (Liquid Cooling Systems)

I. Job Background

Liquid cooling systems in data centers utilize cooling fluids (on the primary and secondary sides) as heat-transfer media, facilitating heat exchange through Coolant Distribution Units (CDUs), cooling towers, piping, and liquid-cooled server racks. The quality of the cooling water is directly linked to heat-transfer efficiency, equipment lifespan, and operational safety. This role is responsible for the water quality management, chemical treatment, and operation and maintenance (O&M) of liquid cooling and cooling water systems in data centers, ensuring long-term, stable, and efficient system performance.

II. Responsibilities

• 1. Water Quality Management: Oversee the monitoring, analysis, and regulation of water quality within data center cooling systems (including open/closed-loop circulating water and primary/secondary-side cooling fluids) to ensure compliance with design specifications and industry standards.
• 2. Chemical Treatment: Develop and implement chemical dosing strategies (e.g., corrosion inhibition, scale inhibition, biocidal/algaecidal treatment, and surface passivation). Dynamically adjust dosage levels and chemical ratios based on water analysis results to prevent corrosion, scaling, and microbial growth.
• 3. Operation and Maintenance: Conduct routine inspections, maintenance, and troubleshooting for water treatment equipment—such as chemical dosing units, side-stream filtration systems, water softening/filtration units, and pressure-stabilizing/make-up water systems—to ensure the stable operation of the water treatment infrastructure.
• 4. Water Quality Testing: Perform regular sampling and analysis (monitoring parameters such as pH, electrical conductivity, turbidity, hardness, alkalinity, chloride ions, iron ions, and microbial content). Prepare water quality analysis reports and maintain comprehensive records.
• 5. System Coordination: Collaborate with teams responsible for HVAC, cooling towers, CDUs, and plumbing/drainage to track system-wide water quality issues, and propose and implement improvement measures.
• 6. Compliance and Safety: Adhere to safety and environmental regulations regarding the storage, handling, and disposal of chemical agents, ensuring full operational compliance.
• 7. Documentation Management: Develop and maintain water treatment operational manuals, emergency response plans, and water quality logs. Participate in the commissioning and acceptance testing of water treatment systems for new projects.

III. Qualifications

• 1. Education & Major: Bachelor’s degree or above in Environmental Engineering, Water Supply and Drainage, Chemical Engineering, Applied Chemistry, Water Treatment, HVAC, or a related field.
• 2. Work Experience: At least 3 years of experience in industrial circulating water treatment—specifically for water treatment plants, data centers, power plants, or large-scale building cooling water systems. Exceptional candidates may be considered with less experience.
• 3. Professional Knowledge: Familiarity with water quality standards for circulating cooling water, water analysis procedures, and chemicals used for corrosion inhibition, scale prevention, and sterilization. Understanding of the operating principles of water system equipment, such as cooling towers, CDUs (Coolant Distribution Units), and plate heat exchangers.
• 4. Practical Skills: Ability to independently perform water quality testing and chemical dosing; capable of conducting routine maintenance and troubleshooting for water treatment equipment.
• 5. Software Proficiency: Proficient in Microsoft Office; able to prepare water quality reports and perform data analysis.
• 6. Language Skills: Basic English reading, writing, and communication skills. Candidates capable of daily communication and report writing in English are preferred (for overseas projects).
• 7. Professionalism: Strong sense of responsibility and high safety awareness; adaptable to the working environment of data center project sites and required shift schedules.

IV. Preferred Qualifications

• 1. Possession of relevant professional certifications, such as those for water quality testing, water treatment engineering, or Registered Environmental Protection Engineer.
• 2. Experience with water treatment for data center liquid cooling systems (e.g., CDUs, cold-plate liquid cooling, or immersion cooling).
• 3. Familiarity with reverse osmosis (RO) systems, water softening, and PLC/automated control systems for chemical dosing.
• 4. Experience with overseas engineering projects or working within multinational teams.
• 5. Familiarity with the ISO 14001 Environmental Management System and local environmental regulations.

V. General Competencies

• 1. Communication & Collaboration: Strong teamwork and cross-disciplinary communication skills; capable of collaborating effectively with international engineers and local teams.
• 2. Problem-Solving: Logical thinking, with the ability to rapidly identify and resolve on-site water quality anomalies.
• 3. Learning Ability: Willingness to continuously learn the latest liquid cooling and water treatment technologies, and to adapt to technological evolution.
• 4. Resilience Under Pressure: Capable of handling work pressure during peak project periods, while ensuring delivery schedules and operational quality.