Designation: Sr. Mechanical Design Engineer

Experience: 8to 15years

Location: Chennai TamilNadu

Role Overview:

A Mechanical Design Engineer working in a sewerage 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 • 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 supplier drawings and approve them.

3. Engineering Calculations

Perform calculations for: • Pump sizing • Pipe sizing • Flow rates • Pressure losses • Power requirements

• Ensure equipment efficiency and reliability.

4. Drawings and Documentation

Prepare and review:

• Material Submittal preparation • Mechanical General Arrangement (GA) drawings • Piping and Instrumentation Diagrams (P&ID;) • Equipment layout drawings • Fabrication drawings

Use software like:



o AutoCAD o SolidWorks o Autodesk Inventor

5. Coordination

Coordinate with: • Civil engineers • Electrical engineers • Process engineers • Contractors Ensure mechanical systems integrate properly with plant structures and controls.

6. Site Support

Provide technical support during: • Equipment installation • Commissioning • 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

Must Have

Candidate must have 5+ years of experience designing mechanical systems for STP projects

Candidate must have 5+ years of experience in equipment selection and engineering calculations for STP projects

Candidate must have experience providing technical support during installation, commissioning and testing of STP projects

Candidate must be currently working as a mechanical design engineer for STP projects

Candidate must have a notice period of less than 60 days

Candidates must be from a Mechanical Engineering background

Candidate must have positive communication and project management skills

Nice to Haves

Preferred candidates with AutoCAD proficiency

Preferred candidates with project coordination skills

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