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Wwtp Process Engineer

Mencast Offshore & Marine Pte. Ltd.

D22 Jurong, Jurong Island, TuasPermanentS$4,000 – S$5,500/mo

Posted 9 Jul 2026

About this role

Highlight 5.5 Working Days Medical Benefits Shuttle bus provided Position Objective and Summary The WWTP Process Engineer is responsible for the operation, monitoring, optimization, and continuous improvement of industrial and hazardous wastewater treatment processes at the wastewater treatment plant (WWTP). This role provides technical judgment, process troubleshooting, and engineering support to ensure stable compliance with discharge standards, operational efficiency, and EHS requirements. Main tasks /Activities / Responsibilities 1. Process Operation and Optimization Responsible for daily operation, monitoring, and optimization of industrial and hazardous wastewater treatment systems. Cover key treatment units, including but not limited to: Physico-chemical treatment: Lamella clarifier, DAF, CAF Advanced oxidation processes (AOP): Micro-electrolysis oxidation, Fenton oxidation, electro-catalytic oxidation, catalytic ozonation, UV photocatalytic oxidation Biological treatment: Anaerobic systems (e.g. UASB, CSTR), aerobic systems (activated sludge, MBR) Tertiary / polishing treatment: MBR, RO Adjust operating parameters based on influent water quality variations (COD, BOD, SS, oil & grease, toxicity, etc.). 2. Technical Evaluation and Process Development Conduct technical evaluation of new incoming wastewater or waste streams and determine suitable treatment routes and pretreatment requirements. Plan, organize, and execute bench-scale tests (e.g. jar tests, pilot trials) to verify treatment feasibility. Provide technical recommendations to support operational decisions and commercial assessments. 3. Troubleshooting and Problem Solving Handle system abnormalities such as effluent non-compliance, biological inhibition, membrane fouling, and process instability. Perform root cause analysis (RCA) and propose corrective and preventive actions (CAPA). 4. Documentation and Technical Management Prepare, update, and maintain SOPs, process operating parameters, and technical reports. Guide technicians and laboratory staff on sampling, testing, and on-site process adjustments. Participate in government inspections, customer audits, and technical discussions. 5. Safety and Compliance Ensure safe operation of chemical systems, advanced oxidation units, and biological treatment processes in compliance with EHS requirements. Participate in risk assessments (RA) and management of change (MOC) reviews. Job requirements (education, linguistic ability, professional experience, leadership qualities, soft skills etc.) 1. Education Bachelor’s degree or above. Major in Environmental Engineering, Chemical Engineering, Applied Chemistry, Biotechnology, or related disciplines. 2. Professional Experience Minimum 5 years of experience in industrial wastewater or hazardous wastewater treatment. Hands-on operational experience in one or more of the following systems is preferred: Advanced oxidation processes (Fenton, electrochemical, ozone, UV) Biological treatment systems (anaerobic + aerobic, MBR) 3. Professional Competency Ability to independently perform process evaluation, troubleshooting, and operating parameter optimization. Strong understanding of common wastewater quality parameters and their impact on treatment systems. Competent in bench-scale test design and data analysis. 4. Soft Skills and General Competency Good communication skills with operations, laboratory teams, and management. Strong sense of responsibility and ability to make sound technical judgments under abnormal conditions. Able to work in a plant-based, on-site operational environment.

What they're looking for

Process ImprovementProduction PlanningSite ManagementSample Design

About Mencast Offshore & Marine Pte. Ltd.

Industry: Professional & technical services

Frequently asked questions

What does a Wwtp Process Engineer at Mencast Offshore & Marine Pte. Ltd. do?

Highlight 5.5 Working Days Medical Benefits Shuttle bus provided Position Objective and Summary The WWTP Process Engineer is responsible for the operation, monitoring, optimization, and continuous improvement of industrial and hazardous wastewater treatment processes at the wastewater treatment plan…

What skills does this Wwtp Process Engineer role need?

Key skills for this role include Process Improvement, Production Planning, Site Management, Sample Design.

How much does a Wwtp Process Engineer at Mencast Offshore & Marine Pte. Ltd. pay?

This role lists a salary of S$4,000 – S$5,500 per month.

Is this Wwtp Process Engineer role remote, hybrid, or on-site?

The listing is based in D22 Jurong, Jurong Island, Tuas. Check the posting for remote or hybrid options.

How do I apply for this Wwtp Process Engineer role?

You can apply directly on Mencast Offshore & Marine Pte. Ltd.'s careers page. ApplyLah can tailor your résumé and cover letter to this exact role in seconds first.