Job Description – Process Design Engineer / Senior Process Design Engineer

Industry: Water & Wastewater Treatment Department: Engineering / Process Design Location: Pune Corporate Office & Factory: Gat. No 1086, Next to Wadki Timber Market, Pune Saswad Road, Wadki, Pune - 412308, Maharashtra, India Reporting To: Head – Engineering / Process Design Manager

About the Company

We are a leading multinational organization working in water treatment, wastewater management, sanitation, and sustainable infrastructure solutions .

The company delivers engineering solutions for municipal, industrial, and commercial water and wastewater projects across different markets.

About the Role

We are looking for a Process Design Engineer / Senior Process Design Engineer who has experience in designing and developing treatment processes for Water Treatment Plants (WTP), Sewage Treatment Plants (STP), Effluent Treatment Plants (ETP), and Zero Liquid Discharge (ZLD) systems .

The candidate will be responsible for understanding customer requirements, selecting suitable treatment technologies, developing process designs, and preparing engineering documents for water and wastewater treatment projects.

You will work closely with Process, Mechanical, Piping, Electrical, Instrumentation, Civil, Project, and Site teams to ensure the process design is technically correct and meets project requirements.

Key Responsibilities

1. Process Design & Engineering

Develop process designs for:

Water Treatment Plants (WTP)
Sewage Treatment Plants (STP)
Effluent Treatment Plants (ETP)
Zero Liquid Discharge (ZLD) Systems

Understand client requirements and project specifications.
Study raw water and wastewater characteristics and determine the appropriate treatment process.
Understand treated-water quality requirements and applicable discharge standards .
Select suitable water/wastewater treatment technologies based on project requirements.
Develop complete process treatment schemes for projects.

2. Engineering Drawings & Documents

Prepare and review important process engineering documents such as:

Process Flow Diagrams (PFD)
Process & Instrumentation Diagrams (P&ID)
Process design calculations
Equipment sizing calculations
Hydraulic calculations
Equipment and instrument datasheets
Process design basis
Technical specifications
Equipment/process schedules
Water and chemical balance
Process descriptions and narratives

3. Process Calculations & Equipment Sizing

Perform process calculations for various treatment units.
Carry out sizing of tanks, clarifiers, filters, biological treatment systems, pumps, pipelines, membranes, and other process equipment .
Prepare and review hydraulic calculations and mass balance .
Ensure equipment selection and sizing meet the required treatment capacity and performance.

4. Treatment Technology Selection

Evaluate and select suitable treatment technologies based on:

Raw water/wastewater characteristics
Required treated-water quality
Plant capacity
Client requirements
Applicable environmental/discharge standards

Work with technologies such as physical, chemical, biological, membrane, and advanced treatment processes .
Experience with RO, UF, MBR, ETP, STP, WTP, ZLD, MEE , or similar technologies will be an advantage.

5. Coordination with Engineering & Project Teams

Coordinate with Mechanical, Piping, Electrical, Instrumentation, Civil, Procurement, and Project teams .
Provide process inputs required for detailed engineering and equipment selection.
Review vendor technical documents and ensure compliance with process requirements.
Support project teams during installation, testing, commissioning, and troubleshooting when required.

6. Client & Project Support

Understand client technical requirements and provide suitable process solutions.
Participate in technical discussions with clients, consultants, and vendors.
Support preparation of technical proposals and project documentation when required.
Resolve process-related technical queries during project execution.
Ensure designs comply with project specifications, applicable codes, safety requirements, and company engineering standards .

Candidate Requirements

We are looking for candidates with:

Experience in Process Design / Process Engineering in the Water & Wastewater Treatment industry .
Hands-on experience in WTP, STP, ETP, ZLD, or industrial wastewater projects .
Good understanding of water and wastewater treatment processes.
Experience preparing and reviewing PFDs and P&IDs .
Knowledge of process calculations, hydraulic calculations, mass balance, and equipment sizing .
Understanding of treatment technologies and process equipment.
Ability to read and understand engineering drawings, datasheets, specifications, and technical documents .
Good coordination skills with multidisciplinary engineering and project teams.
Good technical communication and problem-solving skills.

Preferred Technical Experience

Candidates with experience in the following areas will be preferred:

WTP | STP | ETP | ZLD | RO | UF | MBR | MEE | Water Treatment | Wastewater Treatment | Process Design | PFD | P&ID | Hydraulic Calculation | Mass Balance | Equipment Sizing

Who Should Apply?

This role is suitable for candidates currently working as:

Process Design Engineer
Process Engineer – Water Treatment
Water Treatment Design Engineer
Wastewater Process Engineer
Process Design Engineer – WTP/ETP/STP
Senior Process Design Engineer

Process Design Engineer

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