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.

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Job Description

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.

Key Responsibilities

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

Qualifications

Educational

Qualifications

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

Experience

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.

Additional Information

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.

Design Engineer - Water supply and Sewerage

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