[Skip to main content](#main-content) [ OpenNash ](https://opennash.com/) / [Jobs](https://jobs.opennash.com/) [ 01 Search jobs](https://jobs.opennash.com/search/)[ 02 Companies](https://jobs.opennash.com/explore/)[ 03 Hiring report](https://jobs.opennash.com/reports/hiring/)[ 04 AI assistants](https://jobs.opennash.com/connect/)[ 05 How it works](https://jobs.opennash.com/methodology/) Larsen & Toubro # Process Design Engineer India\>Tamil Nadu\>Chennai Head Qrs. Design Listed on Larsen & Toubro’s official careers site. Posted September 19, 2026. Check that it is still open and apply there. [Apply on Larsen & Toubro’s careers site →](https://larsentoubrocareers.peoplestrong.com/job/detail/LNT_PDE_1806412) [OpenNash Jobs](https://jobs.opennash.com/) / [Larsen & Toubro](https://jobs.opennash.com/companies/larsen-toubro/) / Process Design Engineer ## Job description - Experience in Process design & engineering related to Industrial Projects. - Preparation of preliminary Process design for: Oil removal system(API, TPI and DAF), Biological Treatment(SBR, ASP, MBBR and MBR) Pretreatment (includes Lamella, DAFF, Media filters, Ultra- filtration, etc.), Reverse Osmosis (includes Brackish water, Sea water and Wastewater), Chemical dosing system, Sludge treatment (includes Centrifuge, Filter press, Thickener, etc.), Conventional DM Plant, CPU and Evaporator. - Selection of process technology based on the feedwater characteristic and capable of doing the process calculations, membrane selection, filters selection etc. Hydraulic calculation, pressure drop calculation, line sizing,Preparation of layout, PFD, P&ID, HFD, electrical load list and power consumption at different at different conditions with respect to tender/Contract guaranteed parameters. - Prepare enquiry documents (RFQ), scopes of work, datasheets, etc for valves, pumps and other engineering items with proper selections required for RO desalination projects. - Preparation of Control philosophy, O&M manual for the execution of the project. - To interact closely with PLC engineer to help in logic development for FAT and SAT. - Participation in technical meetings, decision making, preparing MOM and coordination with the clients. - To prepare technical evaluation and comparison of documents furnished by different manufacturers and get the technical clarity from the vendor independently. - Candidates should be flexible to travel long term / short term to various project sites and client / consultant offices based on the project requirement for document approval and resolution of site technical issues during execution. 10 Experience in Process design & engineering related to RO and desalination water system. 11. Preparation of preliminary Process design for: Pretreatment (includes Lamella, DAF, Media filters, Ultra- filtration, etc.), Reverse Osmosis (includes Brackish water, Sea water and Wastewater), Chemical dosing system, Sludge treatment (includes Centrifuge, Filter press, Thickener, etc.) and Post treatment (includes lime stone filter etc.). 12.Proficiency in RO membrane design and UF membrane design with vendor software (Wave, IMS Design, Toray DS, Inge etc) 13.Selection of process technology based on the feedwater characteristic and capable of doing the process calculations, membrane selection, filters selection etc. Hydraulic calculation, pressure drop calculation, line sizing,Preparation of layout, PFD, P&ID, HFD, electrical load list and power consumption at different at different conditions with respect to tender/Contract guaranteed parameters. 14.Prepare enquiry documents (RFQ), scopes of work, datasheets, etc for valves, pumps and other engineering items with proper selections required for RO desalination projects. 15.Preparation of Control philosophy, O&M manual for the execution of the project. 16.To interact closely with PLC engineer to help in logic development for FAT and SAT. 17.Participation in technical meetings, decision making, preparing MOM and coordination with the clients. 18.To prepare technical evaluation and comparison of documents furnished by different manufacturers and get the technical clarity from the vendor independently. 19.Candidates should be flexible to travel long term / short term to various project sites and client / consultant offices based on the project requirement for document approval and resolution of site technical issues during execution. ## Qualifications Bachelor of Technology (BTech) ## At a glance - Posted by the employer: Sep 19, 2026 - First seen by OpenNash: Nov 9, 2026 - Last checked: Nov 9, 2026 - Listed for: 51 days - Location: India\>Tamil Nadu\>Chennai Head Qrs.[Apply on Larsen & Toubro’s careers site →](https://larsentoubrocareers.peoplestrong.com/job/detail/LNT_PDE_1806412) ## Hiring at Larsen & Toubro - Open jobs: 3,291 - New in the last 7 days: After two weekly collections - Tracked since: Oct 12, 2026 [All Larsen & Toubro jobs](https://jobs.opennash.com/companies/larsen-toubro/) · [Weekly hiring report](/reports/hiring/) ## More jobs at Larsen & Toubro ### [Process Senior Lead Manager](https://jobs.opennash.com/companies/larsen-toubro/jobs/009059ce915ea438db38/) India\>Tamil Nadu\>Chennai Head Qrs. ### [Quantum Computing Associate](https://jobs.opennash.com/companies/larsen-toubro/jobs/97045ce7a2207696354f/) India\>Tamil Nadu\>Chennai Head Qrs. ### [Procurement - Chennai HQ](https://jobs.opennash.com/companies/larsen-toubro/jobs/d8396cea2d0a9974efc9/) India\>Tamil Nadu\>Chennai Head Qrs. ### [Project Engineering Manager - SS](https://jobs.opennash.com/companies/larsen-toubro/jobs/e701774950cbd7eabffc/) India\>Tamil Nadu\>Chennai Head Qrs. ### [Public Health Engineering Works - BIM Modeller](https://jobs.opennash.com/companies/larsen-toubro/jobs/08231138f9b24f1a3365/) India\>Tamil Nadu\>Chennai Head Qrs. ## Similar jobs at other companies ### [Process Engineer](https://jobs.opennash.com/companies/totalenergies/jobs/c7c301794530b6e8ad7a/) TotalEnergies ### [Process Component Engineer](https://jobs.opennash.com/companies/siemens/jobs/daf528fa055d8e6ec4c6/) Siemens ### [Process Engineer](https://jobs.opennash.com/companies/siemens/jobs/cca51f147ff79befb794/) Siemens ### [Sales Engineer - Process Instrumentation](https://jobs.opennash.com/companies/abb/jobs/9540e4fbc59961824535/) ABB · Machelen, Belgium [Design jobs](/functions/design/) OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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