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Job Description

Location/s: Brighton, Croydon, London, Reading, Cambridge, Southampton; UK
Recruiter contact: Nicola Coyle

Mott MacDonald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices.


We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve. Our people power our performance – we succeed when they do. With countless opportunities to collaborate, learn, and grow, the possibilities for excellence are as varied as every individual.


Whether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. As a proudly employee-owned business, we benefit our clients, our communities, and each other, investing in creating the right space for everyone to feel empowered, included, and valued. Whatever your ambition, Mott MacDonald is where people come to be brilliant.

About the business division
The Water Utilities Division is Mott MacDonald’s centre of excellence for responding to the UK and Ireland's water and wastewater challenges. The work we do is at the forefront of ensuring safe water supplies for future generations, preventing urban flooding, and improving the health of our rivers and coastal environments. Our multi-disciplinary teams provide a variety of services throughout the full project life cycle, from advisory services and feasibility studies to outline and detailed design. Together, we deliver best-in-class solutions to our clients while offering diverse and technically stimulating opportunities to our people.

Overview of the role

Come join our dynamic and award-winning OneWater Team at Mott MacDonald, where we are committed to our Clients, our People and the Environment.

Our process engineering team works as part of our fully integrated multi-disciplinary service offering. Together, we deliver client-centric solutions across a diverse portfolio of water sector projects and frameworks. Building on our proud 70-year long track record in Ireland, we have secured numerous exciting framework appointments up to 2030 and beyond. This success is allowing us to grow our pool of talented Process Engineers.

We are agile across our resource teams which offers candidates excellent career progression opportunities. We are widely seen as the core of our global water and wastewater delivery capability, providing support to colleagues across our global business. You will work alongside industry recognised experts to deliver value to key utility company clients, such as Uisce Éireann, NI Water, Scottish Water and other AMP water companies. You'll undertake process investigation and design across all stages of water and wastewater scheme development; from high level master planning through to detailed design and commissioning.

Your typical duties and responsibilities will include preparation of studies and reports, process calculations and drawings to support other disciplines in the preparation of their deliverables. You will also be involved with business development including providing specialist support to our account leaders and engineering practices. The role will require mentoring a team of engineers and scientists, and you will play a key role in their professional development. The role may also include line management responsibility in future.

Candidate specification

Essential:

  • Degree in Chemical Engineering or related engineering field
  • Chartered Status (CEng) with a recognised Professional Institution
  • A deep understanding of conventional and innovative water treatment technologies
  • Track record of process engineering technical leadership, being client facing and driving innovation and low carbon solutions
  • Significant experience in development and delivery of outline, feasibility and detailed process engineering design solutions within Ireland and/or the UK water sector using appropriate calculation tools. Including excellent technical report writing skills using concise English
  • Track record in conducting water treatment plant and process root-cause analysis reviews

Desirable:

  • Track record in building teams and capability of junior staff
  • Understanding of key water sector treatment and sustainability needs
  • Ability to support process elements of bids, fee proposals or offers of service
  • Strong communication skills with experience in effective collaboration across internal multi-disciplinary teams as well as Client teams
  • Ability to travel to sites in various locations across Ireland and the UK

Equality, diversity, and inclusion

We put equality, diversity, and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they can contribute.

Accessibility

We want you to perform your best at every stage in the recruitment process. If you are disabled or need any support to enable you to apply or attend an interview, please contact us at reasonable.adjustments@mottmac.com and we will talk to you about how we can support you.

Agile working

Happy to talk Flexible Working and how we can support your responsibilities beyond the workplace.

We offer some fantastic benefits including:

  • Pension matched up to 7%
  • Life insurance
  • An annual professional institution subscription
  • Continuous development opportunities – because we want you to thrive
  • Agile/flexible working – because life isn’t 9-5
  • Enhanced parental leave; shared parental leave policies – for parents and care givers
  • Annual bonus scheme
  • Flexible benefits that suit you, including ability to buy/sell annual leave entitlement, cycle to work & interest free season ticket loans
  • Wellbeing support including access to an independent Employer Assistance Scheme, wellbeing champions and access to learning and support resources
  • Access to our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability and parents/carers communities
  • The opportunity to make a difference; learn more about our social outcomes

Apply now, or for more information about our application process, click here.

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

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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

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Culture

Culture

Flexa awards 2025

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