Assistant Mechanical / Mechanical Engineer (Treatment Plants) – Mott MacDonald | Bengaluru, Mumbai, Noida

Job Description

Summary

Join Mott MacDonald, a global leader in engineering, management, and development consultancy, as an Assistant Mechanical Engineer (Treatment Plants) or Mechanical Engineer – Water Treatment in Bengaluru, Mumbai, or Noida, India.
In this role, you’ll design and develop mechanical systems for wastewater and desalination treatment plants, collaborating across disciplines to deliver efficient, sustainable engineering solutions.

This position is ideal for mechanical engineers passionate about water infrastructure, treatment plant design, and sustainable engineering, with opportunities to work on international projects, enhance technical expertise, and grow in a diverse, inclusive, and agile work environment.

Job Details at a Glance

Key Responsibilities

As an Assistant Mechanical Engineer (Treatment Plants) at Mott MacDonald, you will:

• Prepare equipment layouts and civil outline drawings for wastewater and desalination systems.
• Develop piping and valve material specifications and perform hydraulic and pump head calculations.
• Create technical datasheets, RFQs, and technical bid evaluations for equipment and system packages.
• Check and approve vendor drawings, GA layouts, and fabrication skid drawings for components like RO skids, UF modules, and valve racks.
• Perform line sizing and pipe wall thickness calculations, ensuring design accuracy and efficiency.
• Coordinate with multidisciplinary teams (Process, Civil, Electrical, Instrumentation) for seamless project delivery.
• Review and verify isometric drawings, piping layouts, and support structures.
• Manage design documentation, follow-up with vendors, and ensure timely approval and handover.
• Support site coordination, including preparation of as-built drawings.
• Promote health, safety, and environmental (HSE) best practices and contribute to continuous improvement initiatives.

Required Skills & Software Proficiency

• Expertise in AutoCAD® P&ID, OpenPlant PID, SmartPlant P&ID, or OpenPlant Modeller.
• Experience with Revit MEP, Navisworks, and Bentley ProjectWise.
• Proficiency in Microsoft Office Suite (Word, Excel, PDF).
• Strong understanding of mechanical design processes, equipment selection, and engineering documentation.
• Knowledge of project commercial aspects, quality systems, and HSE requirements.

Qualifications

• Bachelor’s or Master’s degree in Mechanical Engineering from a recognized university.
• Professional membership such as MIMechE / MIET (or working toward it) preferred.
• Prior experience in treatment plant design, mechanical system layout, or industrial piping systems is an advantage.
• Strong communication, analytical, and teamwork skills with attention to detail.

Why Join Mott MacDonald?

At Mott MacDonald, we believe people are our greatest asset. Join a culture that promotes collaboration, innovation, and global opportunity.

What we offer:

• Flexible and agile working environment
• Competitive leave and medical benefits
• Group incentive and life insurance schemes
• Opportunities for global mobility and career progression
• Exposure to digital innovation and sustainable engineering
• Access to a global network of water and infrastructure experts

Workplace Culture & Inclusion

Mott MacDonald champions equality, diversity, and inclusion across all projects and teams. We encourage individuality and collaboration in a supportive environment that values trust, flexibility, and continuous learning.

Apply Now

Ready to design the future of sustainable water treatment systems with Mott MacDonald?
Start your journey toward a rewarding engineering career today.

👉 Apply directly on the official Mott MacDonald Careers Page