Design Engineer - Water supply and Sewerage

Assystem provides engineering, project management and digital services to optimise the performance and safety of critical infrastructure throughout its lifecycle.

The company first came to India having acquired Stup Consultants Pvt Ltd in 2021 and L&TIEL in 2024. The company combines its globally recognised expertise in complex project management, with deep-rooted local experience cross full spectrum of infrastructure – from energy, transportation and urban development to water. Today, Assystem has a strong community of 1,500+ multidiscipline engineering experts connected across 8 offices in India.

The Assystem Group is one of the world’s leading independent nuclear engineering companies, ranked among the top three globally, with 60 years of experience in complex and highly regulated environments. With 8,000 experts across 13 countries, Assystem supports the development of low-carbon energy.

For company profile, please visit the website :- www.Assystem-india.com

Water supply & Sewerage Design Engineer for Design Team, responsible for the planning, hydraulic design, detailed engineering, and implementation support of water supply, sewerage, water treatment, and wastewater treatment projects.

Water Supply Engineering

Plan and design water supply systems from source to consumer.

Perform water demand assessments and population projections.

Design: Intake structures

Raw and treated water transmission mains

Water distribution networks

Pumping stations

ESRs, GLSRs, and CWRs

Carry out hydraulic calculations, network optimization, and pressure management studies.

Develop hydraulic models using WaterGEMS, WaterCAD, and EPANET.

Sewerage Engineering

Design gravity sewer networks, rising mains, force mains, and pumping stations.

Perform wastewater flow estimation and hydraulic assessments.

Prepare sewer network layouts, longitudinal profiles, and hydraulic calculations.

Conduct sewer capacity assessments and rehabilitation studies.

Develop sewer network models using SewerGEMS, SewerCAD, or equivalent software.

Water Treatment Engineering

Design conventional and advanced Water Treatment Plants (WTPs).

Prepare process calculations and treatment unit sizing.

Design: Coagulation & Flocculation Systems

Clarifiers

Filtration Systems

Disinfection Systems

Chemical Dosing Systems

Sludge Handling Facilities

Support commissioning, performance testing, and process optimization.

Wastewater Treatment Engineering

Design Sewage Treatment Plants (STPs) using technologies such as: ASP

SBR

MBBR

MBR

Design tertiary treatment and treated wastewater reuse systems.

Prepare process design calculations, layouts, and equipment specifications.

Support commissioning, troubleshooting, and process performance assessment.

Detailed Engineering

Prepare Detailed Engineering Designs (DED) and Good-for-Construction (GFC) drawings.

Develop: General Arrangement Drawings (GADs)

Plan & Profile Drawings

Piping Layouts

Process Flow Diagrams (PFDs)

P&IDs

Utility Layouts

Construction Drawings

Review vendor drawings, shop drawings, and material submittals.

Coordinate with multidisciplinary teams including Civil, Structural, Mechanical, Electrical, and Instrumentation disciplines.

Project Documentation & Tendering

Prepare: DPRs

Feasibility Reports

Design Basis Reports

Technical Specifications

BOQs

Cost Estimates

Tender Documents

Participate in technical bid evaluations and procurement support activities.

Construction Support

Provide technical support during construction and commissioning.

Conduct site inspections and design reviews.

Resolve engineering and construction-related issues.

Support testing, commissioning, and project handover

Educational Qualifications

Bachelor's Degree in Civil Engineering, Environmental Engineering, Public Health Engineering, or related discipline.

Master's Degree in Environmental Engineering.

Minimum 5 years of relevant experience in water and wastewater infrastructure projects.

Experience in Design Consultancy, EPC, Design-Build, DBO, or Municipal Infrastructure Projects.

Experience in JJM, AMRUT, Smart Cities, Industrial & Urban Water Supply, and Sewerage Projects will be preferred.

Required Technical Skills

Water Supply

Water demand forecasting

Hydraulic design of transmission and distribution systems

Reservoir and pumping station design

NRW reduction and pressure management

Pipeline design and optimization

Sewerage

Wastewater flow estimation

Sewer network design

Sewer pumping station design

Rising main design

Hydraulic profiling and network analysis

Water & Wastewater Treatment

WTP process design

STP process design

Process calculations and unit sizing

Sludge management systems

Tertiary treatment and reuse systems

Detailed Engineering

Preparation of engineering drawings and design packages

Technical specification development

BOQ preparation and cost estimation

Vendor drawing review and design coordination

Software Requirements

Mandatory

WaterGEMS / WaterCAD

SewerGEMS / SewerCAD

EPANET

AutoCAD

MS Excel

MS Project

Preferred

Civil 3D

ArcGIS / QGIS

HAMMER

InfoWorks ICM

Mandatory Knowledge

CPHEEO Water Supply Manual

CPHEEO Sewerage & Sewage Treatment Manual

Desired Knowledge

BIS Standards and IS Codes

Environmental Regulations and Pollution Control Requirements

AWWA and international water industry standards

Key Competencies

Strong hydraulic modeling and design skills

Excellent analytical and problem-solving abilities

Technical report writing and documentation skills

Project coordination and stakeholder management

Ability to work independently and manage multiple projects

Strong communication and presentation skills

Commitment to quality, safety, and sustainable engineering practices

Preferred Candidate Profile

Candidates with proven experience across Water Supply Systems, Sewerage Networks, Water Treatment Plants (WTPs), Sewage Treatment Plants (STPs), Hydraulic Modeling, and Detailed Engineering will be highly preferred.

Additional advantages include:

Experience in EPC/Turnkey Infrastructure Projects

Design and commissioning of WTPs and STPs

SCADA, Automation, and Instrumentation exposure

Surge Analysis and Hydraulic Transient Studies

BIM and GIS-based infrastructure design

Water Reuse and Circular Water Economy Projects

Design management and multidisciplinary project leadership experience

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.