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.

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

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.

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.