Design Engineer

GreenSew; Hyderabad; On-site; INR 600,000 - 850,000; Full time

Job summary

GreenSew Infratech Private Limited invites an experienced Design Engineer to engineer wastewater treatment infrastructure in Hyderabad. You will handle process design, calculations, equipment sizing, and craft drawings and specifications for EPC projects.

The role emphasizes CAD proficiency, compliance with CPB and local norms, seamless cross-functional coordination, and delivering compliant, cost‑efficient designs on schedule.

Qualifications

• Bachelor of Engineering/Technology required in Civil, Mechanical, Environmental or Chemical Engineering.
• Strong fundamentals in process engineering and design calculations are essential.
• Proficiency in CAD tools and technical documentation is required.

Responsibilities

• Design complete sewage treatment systems based on flow rates, inlet/outlet specs, and site conditions.
• Perform design calculations: tank sizing, HRT, organic loading, pump head, piping, and blower sizing.
• Select and specify pumps, diffusers, aeration equipment, clarifiers, screens, filters, dosing systems, control panels, and instrumentation.
• Prepare General Arrangement drawings, PFD, P&ID, equipment layouts, tank and foundation drawings, and pipeline routing.
• Develop BOMs, technical datasheets, and operation philosophy documents; ensure compliance with project standards.
• Coordinate with proposal, procurement, production, site execution, commissioning teams, clients, and consultants.
• Ensure designs comply with Central Pollution Control Board guidelines, TS Pollution Board norms, and municipal discharge standards.

Skills

Process engineering

Hydraulic calculations

Equipment sizing

CAD drafting

Technical documentation

Problem-solving

Project coordination

Analytical thinking

Education

B.E./B.Tech in Civil

B.E./B.Tech in Mechanical

B.E./B.Tech in Environmental

B.E./B.Tech in Chemical

Tools

AutoCAD

SolidWorks

Autodesk Revit

Job description

Key Responsibilities

1. Process Design & System Engineering

• Design complete sewage treatment systems based on:
  • Sewage flow rate (KLD / MLD)
  • Inlet water characteristics
  • Required outlet quality
  • Site conditions
  • Client specifications
• Select suitable treatment technologies such as:
  • Moving Bed Biofilm Reactor (MBBR)
  • Sequential Batch Reactor (SBR)
  • Membrane Bioreactor (MBR)
  • Activated Sludge Process
• Develop treatment flow schemes based on project requirements.
• Optimize process efficiency while reducing operational costs.

2. Engineering Calculations

Perform design calculations for:

• Tank sizing
• Hydraulic retention time (HRT)
• Organic loading calculations
• Air requirement calculations
• Pump head calculations
• Blower sizing
• Pipe sizing
• Sludge generation calculations
• Chemical dosing calculations

When working on hydraulic design, common calculations include:

Q=A×V

Where:

• Q=Flow rate
• A=Cross-sectional area
• V=Velocity

And for pump power:

P=ρgQH

3. Equipment Selection

Select and specify:

• Pumps
• Blowers
• Diffusers
• Agitators
• Clarifiers
• Screens
• Filters
• Dosing systems
• Control panels
• Instrumentation

Prepare technical specifications for procurement and manufacturing.

4. Engineering Drawings & Layouts

Prepare and review:

• General arrangement drawings
• Process flow diagrams (PFD)
• Piping & instrumentation diagrams (P&ID)
• Equipment layout drawings
• Tank layouts
• Foundation drawings
• Pipeline routing drawings

Using engineering software such as:

• AutoCAD
• SolidWorks
• Autodesk Revit (if required)

5. Documentation & Technical Reports

Prepare:

• Design basis reports
• Calculation sheets
• Bill of materials (BOM)
• Technical datasheets
• Operation philosophy documents
• Equipment specifications
• Compliance documentation

Ensure all documentation follows project standards.

6. Cross-Functional Coordination

Coordinate with:

• Proposal team
• Procurement team
• Production team
• Site execution team
• Commissioning engineers
• Clients and consultants

Provide technical clarifications during project execution.

7. Compliance & Standards

Ensure designs comply with:

• Central Pollution Control Board guidelines
• Telangana State Pollution Control Board norms
• Municipal discharge standards
• Safety and engineering standards

Required Qualifications

• B.E / B.Tech in:
  • Civil Engineering
  • Mechanical Engineering
  • Environmental Engineering
  • Chemical Engineering

Required Skills

• Process engineering
• Hydraulic calculations
• Equipment sizing
• CAD drafting
• Technical documentation
• Problem-solving
• Project coordination
• Analytical thinking

Preferred Experience

• Freshers with strong engineering fundamentals OR
• 1–5 years in:
  • STP
  • ETP
  • WTP
  • Industrial utility systems

Key Performance Indicators (KPIs)

• Accuracy of designs
• Optimization of project cost
• Zero design errors during execution
• On-time design submission
• Compliance approval success rate

Career Growth Path

Design Engineer → Senior Design Engineer → Lead Design Engineer → Engineering Manager → Technical Director

This role is ideal for engineers who enjoy combining calculations, creativity, and practical engineering to build real wastewater infrastructure.