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