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Mott MacDonald • Mumbai, MH, IN; Ahmedabad, GJ, IN; Noida, UP, IN; Bengaluru, KA, IN

Associate/Principal Mechanical Engineer (Treatment Plants)

Employment type:  Full time
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Job Description

Mott MacDonald is a global engineering, management, and development consultancy committed to delivering impactful work that shapes the future.


We are a team of over 20,000 experts working across the world in more than 50 countries.
We are proud to be part of an ever-changing global industry, delivering transformative work that’s defining our future. It’s our people who power that performance. As an employee-owned business, we invest in creating a space for everyone to feel safe and valued and empowered with the right tools and support.


Whether you want to pursue excellence in your specialism or broaden your experience with flexible roles across our business, you’ll be connected to a community of global experts championing you to be your best. Join us and shape your story with Mott MacDonald, where everyone has the opportunity to be brilliant.

Job Description :

  • Lead the preparation and analysis of key mechanical options, for review and agreement with the client and key project stakeholders ensuring risks and gaps are mitigated whilst always upholding the Project Basis of Design
  • Preparation of Equipment layout and civil outline drawings for waste water and desalination
  • Preparation of Piping Material specification and valve material specification as per project
  • Cross checking of hydraulic calculation and hydraulic flow diagram during detail engineering
  • Preparation of pump head calculation and blower head calculation.
  • Preparation of RFQ (ready for quotations) for Bought out items such as Intake pumps,
  • Preparation of RFQ for Package items such as compressor, lime handling system and co2 storage system and Degasifier system etc.
  • Preparation of technical datasheets for all rotary and static equipment’s.
  • Preparation of technical bid evaluation and manufacturing clearance for all the bought out
  • Checking of vendor GA’s for various equipment’s.
  • Follow up with vendor & consultant/client for the documents approval.
  • Preparation of line sizing and pipe wall thickness calculation.
  • Design and preparation of fabrication skid drawings such as UF Module rack, valve rack and compact High-pressure RO Skids, RO CIP Skids and UF Backwash skids
  • Checking of piping isometric drawings and piping 2D GA drawing.
  • Checking of pipe supports drawings (Above ground and below grounds such as thrust bloc
  • Preparation and checking of mechanical GA drawings as per the bought-out details.
  • Preparation of initial and final piping MTO (Material to be ordered).
  • Preparation of erection BOM and release for site.
  • Coordination of other disciplines such as Process, Civil, Electrical and instrumentation.
  • Co-ordination of site team and preparation of as built drawings.
  • To understand the design risk and assumptions associated with the project and manage this risk.
  • To record the risks and assumptions as the project progresses.
  • To ensure that the designers responsibilities under CDM are adhered to by all
  • To promote good H&S practice and minimize risks to operators / maintainers (e.g. designing out confined spaces and working from heights)
  • To understand the environmental issues associated with the design and to manage them through the design process
  • Undertake post project reviews to identify and communicate lessons learnt and best practice.
  • Ensure the design team are working to the company procedures (i.e. Engineering, CAD, and QA procedures).
  • Identify potential improvements to the client’s systems and procedures

Candidate Specification :

  • BE or M Tech in Mechanical Engineering with significant experience in leading and checking projects in above works
  • MIMechE/ MIET or equivalent Professional qualifications of workings towards achieving it
  • Detailed knowledge of the design process, engineering, and engineering design
  • Good understanding of project commercial issues and constraints
  • Appreciation of Health, Safety and Environmental systems and procedures

Software:

  • Some experience in either of AutoCAD® P&ID, OpenPlant PID, SmartPlant P&ID, OpenPlant Modeller
  • Revit MEP, Navisworks
  • Microsoft Word, Excel, and PDF document management
  • Bentley ProjectWise

Flexible working
At Mott MacDonald, we support our staff to create work-life balance which works for them and welcome candidates looking for career flexibility. We are open to discussing flexible working at interview stage.

Our benefits package is designed to enhance your experience:

  • Agile working
  • Critical illness and compassionate leave
  • Paternity Leave
  • Group term life insurance, and Group medical insurance coverage
  • Career mobility options
  • Short and Long-term global employment opportunities
  • Global collaboration and knowledge sharing

Company benefits

Open to part-time employees
Open to part time work for some roles
Enhanced maternity leave – 26 weeks full pay
Adoption leave – 26 weeks full pay
Shared parental leave – We match up to 24 weeks full pay
Enhanced paternity leave – 2 weeks
Private GP service – Private Medical care for all UK staff
Life insurance – 4 x salary
Enhanced pension match/contribution – matched up to 7%
Buddy scheme
Enhanced sick pay
Dental coverage
Compassionate leave
Health assessment
Eye Care Support – Eyecare vouchers
Life assurance
Carer’s leave – up to 5 days, two of which are paid
Pregnancy loss leave
Salary sacrifice
Buy or sell annual leave
Accrued annual leave
Religious celebration leave
Tax-free childcare
Theme park discounts
On-site yoga classes
Cycle to work scheme
Faith rooms
Annual pay rises
Annual bonus
Income protection
Employee discounts
Professional subscriptions – We pay for your primary professional annual subscription
Lunch and learns
Employee assistance programme
L&D budget
Teambuilding days
Travel loan
Returnship
Mentoring
In house training
Study support
Learning platform
Further education support

Working at Mott MacDonald

Company employees

18,000 worldwide

Gender diversity (male:female)

65:35

Currently hiring in

Australia

Bulgaria

Canada

Czechia

France

Germany

Hong Kong

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Japan

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Spain

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Office Locations

Awards & Accreditations

2nd – Career Progression

2nd – Career Progression

Flexa awards 2025
3rd – Family Friendly

3rd – Family Friendly

Flexa awards 2025
Work-Life Balance

Work-Life Balance

Flexa awards 2025
Flexible

Flexible

Flexa awards 2025
Culture

Culture

Flexa awards 2025

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