Candidate Profile

"The ideal candidate should have a solid combination of STP project experience, mechanical design expertise, equipment selection, engineering calculations, and site execution support. Candidates with only general mechanical design experience but without significant STP/Wastewater Treatment project exposure may not be suitable for this role".

Location: Chennai, India

Experience: 8–15 Years

Salary: Up to ₹18 LPA(410)

Working Days: Monday–Saturday

Working Hours: 9:00 AM–6:00 PM

Interview Mode: Online – Teams

Interview Rounds: 2

Notice Period: Less than 60 days

Role Overview

We are looking for an experienced Sr.

Mechanical Design

Engineer with strong hands-on experience in Sewage Treatment Plant (STP) / Wastewater Treatment projects.

The candidate will be responsible for mechanical system design, equipment selection, engineering calculations, preparation and review of technical drawings and documentation, as well as coordination with cross-functional teams and providing technical support during installation, commissioning, and testing.

Key Responsibilities

- Design mechanical systems for STP and wastewater treatment projects.
- Prepare equipment layouts, piping layouts, mechanical GA drawings, and fabrication drawings.
- Design and support mechanical systems involving:
- Pumps
- Blowers
- Mixers
- Screens
- Sludge handling equipment
- Aeration systems

- Select appropriate mechanical equipment based on plant capacity, process requirements, and project specifications.




- Evaluate vendor technical specifications and prepare technical data sheets for equipment procurement.
- Review and approve supplier/vendor drawings.
- Perform engineering calculations related to:

- Pump sizing
- Pipe sizing
- Flow rates
- Pressure losses
- Power requirements

- Prepare and review Material Submittals, Mechanical GA Drawings, P&IDs;, Equipment Layouts, and Fabrication Drawings.
- Ensure mechanical designs comply with applicable project specifications, safety standards, and environmental requirements.
- Coordinate with civil, electrical, process, and instrumentation teams, contractors, and other stakeholders.
- Ensure proper integration of mechanical systems with plant structures and control systems.
- Provide technical support during equipment installation, commissioning, testing, and troubleshooting.
- Support project execution and resolve mechanical design and site-related issues.
- Maintain proper engineering documentation and project records.

Must-Have Skills

- 5+ years of hands-on experience in mechanical design for STP/Wastewater Treatment projects.
- 5+ years of experience in equipment selection and engineering calculations for STP projects.
- Current/recent experience working as a Mechanical Design Engineer specifically for STP projects.




- Strong understanding of STP/Wastewater Treatment mechanical systems and processes.
- Experience with mechanical equipment such as pumps, blowers, mixers, screens, sludge handling systems, and aeration systems.
- Strong knowledge of equipment sizing, pipe sizing, flow calculations, pressure-loss calculations, and power requirements.
- Experience in providing technical support during installation, commissioning, and testing of STP projects.
- Strong understanding of piping systems, equipment layouts, GA drawings, and P&IDs.;
- Bachelor's degree in Mechanical Engineering or equivalent Mechanical Engineering qualification.
- Good communication, coordination, and project management skills.
- Notice period should be less than 60 days.

Nice-to-Have Skills

- Proficiency in AutoCAD.
- Experience with SolidWorks and/or Autodesk Inventor.
- Experience in preparing and reviewing fabrication drawings.
- Strong project coordination and stakeholder management skills.
- Experience coordinating with contractors and vendors during project execution.

Skills: piping systems,flow calculations,project management,engineering calculations,mixers,p&ids;,stp/wastewater treatment projects,aeration systems,mechanical design,equipment selection,sludge handling systems,stp/wastewater treatment mechanical systems,power requirements,pumps,commissioning,pipe sizing,communication,pressure-loss calculations,installation,mechanical design engineer,equipment layouts,ga drawings,blowers,equipment sizing,screens

📌 Sr. Mechanical Design Engineer – STP (Chennai)
🏢 Umanist NA
📍 Chennai