Sr. Mechanical Design Engineer STP

Candidate Profile

The ideal candidate should have a strong 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