Design & Estimation Engineer – Water & Wastewater Treatment

Experience Level

Job Overview

Design & Estimation Engineer

1. Process & Engineering Design

• Develop conceptual, basic, and detailed engineering designs for wastewater treatment systems (e.g., MBBR, MBR, SBR, RO, Ultrafiltration, and Effluent Treatment Plants).
• Prepare

Process Flow Diagrams (PFDs)

Piping and Instrumentation Diagrams (P&IDs)

• , hydraulic profiles, and general arrangement drawings.
• Perform process calculations, mass balance calculations, and equipment sizing (pumps, blowers, clarifiers, dosing systems).
• Ensure all designs comply with local environmental regulations and international engineering standards.

2. Cost Estimation & Proposals

• Analyze tender documents, RFQs (Request for Quotes), and client specifications thoroughly to identify the optimal technical solution.
• Prepare comprehensive

Bill of Quantities (BOQ)

Bill of Materials (BOM)

• for electro-mechanical equipment, piping, structural, and instrumentation components.
• Source quotations from vendors and subcontractors; evaluate them technically and commercially to optimize project margins.
• Draft complete, high-quality techno-commercial proposals, including technical write-ups, layout drawings, and precise cost estimates.

3. Stakeholder Collaboration

• Liaise closely with the Sales, Project Management, and Procurement teams to ensure seamless transition from proposal to execution.
• Attend technical clarification meetings with clients, consultants, and contractors to justify design selections and cost variations.

& Qualifications

• **Education:**
• Bachelor’s degree in

Chemical, Environmental, Mechanical, or Civil Engineering

• (with a heavy focus on environmental/water processes).
• **Experience:**
• Minimum of 3–5 years of proven experience in the design and cost estimation of water/wastewater treatment plants.

Technical Software Proficiency

• **CAD:**
• Advanced proficiency in

AutoCAD

• (2D/3D modeling is a plus).
• **Simulation:**
• Familiarity with process simulation software (e.g., BioWin, GPS-X) or any specialized RO projection software (e.g., WAVE, ROSA) is highly desirable.
• **Office Tools:**
• Advanced mastery of

MS Excel

• for complex cost-modeling formulas and data analysis.
• **Industry Knowledge:**
• In-depth understanding of biological treatment processes (activated sludge, aerobic/anaerobic), chemical dosing, filtration, and sludge dewatering systems.
• **Soft Skills:**
• Exceptional analytical thinking, sharp eye for detail, strong negotiation skills, and clear technical writing capability.

What We Offer

• Competitive salary and performance-based project incentives.
• Comprehensive health, life, and wellness benefits.
• Transition opportunities into Senior Process Design roles, Estimation & Proposals Team Lead