Responsibilities
* Lead process engineering input across feasibility, concept, preliminary, and detailed design for water and wastewater treatment designs
* Develop and review process designs, including block flow diagrams, P&IDs, mass balances, and equipment sizing
* Analyse operational data to identify optimisation opportunities and improve treatment performance
* Perform process modelling and simulation to support design and operational enhancements
* Prepare high-quality technical reports, proposals, and client presentations
* Check process deliverables for accuracy and compliance
* Engage with clients and stakeholders to ensure successful project delivery
* Mentor and support junior engineers, fostering technical growth and team development
* Collaborate with resource coordinators to manage project resources and contribute to recruitment and training initiatives
* Support business development by providing technical input to proposals, tenders, and client strategies
Candidate specification
We are looking for an individual, keen to make a difference in the sector, take wide responsibilities and progress professionally. At Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team, and personal commitments. We offer a hybrid working policy that embraces your well‑being, flexibility, and trust.
Qualifications
* Degree in Chemical Engineering or related engineering field
* Chartered Status (CEng) with a recognised Professional Institution
* Proven experience in municipal water and/or wastewater treatment
* Strong understanding of conventional and emerging treatment technologies
* Significant experience in developing and delivering feasibility, outline, and detailed process designs
* Demonstrated ability to conduct root‑cause analysis and optimise treatment processes
* Excellent technical report writing skills using concise English
* Excellent communication skills for client interaction and team collaboration
* Skilled in reviewing technical deliverables, calculations, and reports
* Commitment to continuous professional development and staying abreast of emerging technologies
* Willingness to contribute to technical knowledge networks and promote best practice
Benefits
Health and Wellbeing
* Private medical insurance for all UK colleagues.
* Health cash plan to support you with everyday health costs and treatments.
* Access to Peppy, providing free support from menopause experts for all UK colleagues.
* A variety of wellbeing support is available through our comprehensive wellbeing programme, including access for you and your family.
* Ability to flex your salary to opt into a wide range of health benefits, many of which can be extended to your family too.
Financial Wellbeing
* We match employee pension contributions between 4.5% and 7%.
* Life assurance equal up to 4 × your basic salary, with an option to increase the level of cover to 6 × your salary.
* Our income protection scheme provides a financial benefit, as well as absence and return to work support due to long‑term illness or injury.
* Flexible benefits, including increased life assurance cover, critical illness insurance, payroll saving and will writing.
* As an independently owned business we share the financial success of the business with all our colleagues in various ways, including annual bonus schemes.
Holiday Entitlement
* A minimum of 33‑35 days holiday each year, inclusive of public holidays, and dependent on level, with the ability to buy or sell leave through our flexible benefits programme.
* Holiday entitlement increased to a minimum of 35 days after 5 years' service.
* Variety of employee saving schemes and discounts from high‑street retailers.
Enhanced Family and Carers Leave
* Enhanced family leave policies, including 26 weeks paid maternity and adoption leave, and two weeks paid paternity/partner leave.
* Our shared parental leave matches maternity leave, meaning we pay up to 24 weeks at full pay.
* Up to five additional days leave are provided for those with significant caring responsibilities, two of which are paid.
Learning and Development
* Primary annual professional institution subscription.
* A broad range of opportunities to enhance both technical and soft skills through mentoring, formal training, and self‑development options.
Networks, Communities, and Social Outcomes
* Join a wide range of groups including our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability, and parents/carers communities.
* Make a difference within our communities through our social outcomes.
UK Immigration
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.
About the 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‑disciplined 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.
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