Senior Mechanical Design Engineer

Positions: 1 full-time position

Experience: 8–15 years

A Mechanical Design Engineer working on a sewage treatment plant (STP) is responsible for designing, selecting, and supporting the installation of mechanical equipment used to treat wastewater safely and efficiently.

1. Design Responsibilities

• Design mechanical systems used in wastewater treatment processes.
• Prepare equipment layouts, piping layouts, and mechanical drawings.
• Design systems for pumps, blowers, mixers, screens, sludge-handling equipment, and aeration systems.
• Ensure designs meet project specifications, environmental regulations, and safety standards.

2. Equipment Selection

• Select suitable equipment based on plant capacity and process requirements.
• Evaluate vendor technical specifications.
• Prepare technical data sheets for equipment procurement.
• Review and approve supplier drawings.

3. Engineering Calculations

• Perform calculations for pump sizing, pipe sizing, flow rates, pressure losses, and power requirements.
• Ensure equipment efficiency and reliability.

4. Drawings and Documentation

• Prepare and review material submittals, mechanical general arrangement (GA) drawings, piping and instrumentation diagrams (P&IDs), equipment layout drawings, and fabrication drawings.
• Use software such as AutoCAD, SolidWorks, and Autodesk Inventor.

5. Coordination

• Coordinate with civil, electrical, and process engineers, as well as contractors, to ensure mechanical systems integrate properly with plant structures and controls.

6. Site Support

• Provide technical support during equipment installation, commissioning, and testing.

Key Skills Required

• Mechanical system design
• Knowledge of wastewater treatment processes
• CAD software proficiency
• Equipment sizing and selection
• Understanding of piping systems
• Project coordination skills