Lead Process and Mechanical Engineer

Lead Process and Mechanical Engineer (Water Treatment)Lead Process and Mechanical Engineer (Water Treatment)

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Job Summary:
The Lead Process & Mechanical Engineer will be responsible for delivering comprehensive process and mechanical engineering services across the full lifecycle of awarded projects, from design development to commissioning. This role provides critical technical leadership to ensure execution excellence, cost-effective design, and operational optimization for complex industrial water and wastewater treatment systems, with a particular focus on FEED and EPC project delivery within sectors such as Oil & Gas, offshore (FPSO), and heavy industrial infrastructure.

Additionally, the role offers subject-matter expertise in troubleshooting and performance enhancement for operating plants, supporting asset integrity and lifecycle cost minimization, while driving continuous design improvement based on operational feedback.

Key Responsibilities:
Engineering Design & Project Delivery

• Interpret and clarify client contracts and project specifications to define a precise scope of engineering deliverables.
  

• Support project management in developing and maintaining process engineering schedules and deliverable trackers.
  

• Prepare and oversee the development of core engineering documentation including:
  

  • Process Flow Diagrams (PFDs)
    

  • Utility Flow Diagrams (UFDs)
    

  • Piping & Instrumentation Diagrams (P&IDs)
    

  • Heat and Mass Balances (H&MB)
    

  • Cause and Effect Diagrams, Material Handling Plans, and Safety Logic Charts
    

• Develop detailed start-up, shutdown, and control philosophies in alignment with operational and safety requirements.
  

Process Engineering Calculations & Analysis

• Execute detailed equipment sizing and hydraulic design calculations for pumps, filters, pressure vessels, separators, tanks, and pipelines
  

• Conduct process modelling and performance assessments of water and wastewater treatment systems, with emphasis on industrial applications.
  

• Author and validate technical reports including Process Design Basis, Utility Summaries, Vent and Drain Reports, etc.
  

• Prepare process datasheets for instrumentation and mechanical equipment in accordance with project standards and codes.
  

Cross-Disciplinary Coordination

• Collaborate with mechanical, electrical, instrumentation, and civil teams to ensure alignment and integration of process inputs into multi-disciplinary deliverables.
  

• Perform and lead inter-discipline design reviews and ensure adherence to quality and safety standards.
  

• Coordinate with procurement, construction, and commissioning teams to ensure seamless transition of engineering into execution.
  

Vendor & Client Interface

• Prepare and manage Technical Queries (TQs) and lead resolution discussions with clients and vendors.
  

• Review and comment on vendor documents and design packages to ensure compliance with contractual and process requirements.
  

• Participate in third-party reviews and workshops (e.g., HAZOP, HAZID, SIL, LOPA) and ensure that outcomes are implemented within the design.
  

Project Lifecycle Engagement

• Provide technical support throughout project phases including: Detailed Engineering, As-Built Engineering, Pre-Commissioning, Commissioning, and Performance Testing.
  

• Contribute to the development of Operating Manuals, Pre-Commissioning, and Commissioning procedures.
  

• Participate in client and internal progress meetings, and provide engineering insights and action closure.
  

Documentation, Training & Knowledge Transfer

• Compile and maintain structured process design documentation packages for submittals, including drawings, calculations, and specifications.
  

• Develop operator training materials and manuals to support system handover and plant operations.
  

• Capture lessons learned and support continuous improvement initiatives by mentoring junior engineers and coordinating knowledge-sharing activities.
  
  

RequirementsQualifications & Experience:

• Bachelor's degree or higher in Chemical Engineering, Environmental Engineering, Mechanical Engineering, or a related discipline.
  

• Minimum of 8 years' experience in industrial water/wastewater treatment, with demonstrable expertise in process engineering and system design.
  

• Proven experience delivering FEED and EPC projects, ideally within the Oil & Gas, Offshore (FPSO), or modular water treatment sectors.
  

• Strong background in skid-mounted and packaged system design for complex industrial applications.
  

• Experience in site-based commissioning, operational troubleshooting, and process optimization is highly advantageous.
  

• Proficient in engineering software tools such as Aspen HYSYS, AutoCAD, and related hydraulic and process modelling tools.
  

• Familiarity with international codes, standards, and safety regulations (e.g., API, ASME, IEC, ISO).
  

• Willingness to travel to project sites, client offices, and vendor facilities as required.
  

• Strong organizational, communication, and stakeholder engagement skills.
  
  

Benefits

• Competitive package in SGD currency
  
• 14 days Annual Leave
  
• 14 days Medical Leave
  
• Medical benefits & flexi-benefits
  
• Comprehensive company insurance coverage
  
• On-market to above market annual increment
  
• Variable Bonus & performance bonuses
  
  

Seniority level

• Seniority levelMid-Senior level

Employment type

• Employment typeFull-time

Job function

• IndustriesIndustrial Machinery Manufacturing

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