Role & responsibilities

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:

- AutoCAD
- SolidWorks
- Autodesk Inventor

5. Coordination

Coordinate with Civil engineers, Electrical engineers, Process engineers and Contractors.



Ensure mechanical systems integrate properly with plant structures and controls.

6. Site Support

Provide technical support during:

- Equipment installation
- Commissioning
- Testing

Key Skills

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

Job Type: Full-time

Pay: ₹50,000.00 - ₹80,000.00 per month

Application Question(s):

- Do you have at least 6 years of experience as a design engineer in the water treatment industry? (Mandatory)
- Are you currently working in large scale STP plants/projects in the water treatment? (This is a mandatory job requirement)
- Are you involved in end to end design and layout of mechanical equipments used in the water treatment industry? (This is a mandatory job requirement)
- Do you have solid technical expertise to perform design and process calculations for mechanical equipments? (This is mandatory)
- Do you have current or prior experience in P&ID;, GA drawings and fabrication drawings? (Mandatory)
- Are you open for relocation to our office location in Chennai? (Mandatory)
- Are you involved in providing technical support for equipment installation, commissioning and testing? (Mandatory)
- What is your current CTC? (Mandatory)
- What is your expected CTC? (Mandatory)
- What is your notice period? (Mandatory)

Work Location: In person

📌 Sr. Mechanical Design Engineer - Water Treatment Industry (STP Projects) (India)
🏢 Middle East Group Holding
📍 India