Senior Wastewater Network Modeller

Bristol, United Kingdom / London, United Kingdom / Reading, United Kingdom / Brighton, United Kingdom / Cardiff, United Kingdom / Manchester, United Kingdom / Newcastle Upon Tyne, United Kingdom / Edinburgh, United Kingdom / Derby, United Kingdom / Leeds, United Kingdom

Location/s: Bristol, Cardiff, Reading, Newcastle, Manchester, Brighton, Edinburgh, Derby, Leeds & London; 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

We have an exciting opportunity for a Senior Wastewater Network Modeller to join our team of innovative and motivated network modellers, engineers and project managers, delivering projects across the UK. We are looking for a driven, experienced individual who wants to progress their career, with a desire to evolve within Mott MacDonald, and to mentor and develop others. As a Senior Modeller, you’ll provide key technical inputs on a diverse range of UK wastewater infrastructure projects, from feasibility through to detailed design. Our senior modellers are a key part of our modelling community and have the opportunity to contribute to internal innovation sprints, involved in external conferences, drive the direction of our sub‑sector at a strategic level and contribute to business development.

Key responsibilities and duties include:

• Delivering wastewater infrastructure projects of varying sizes
• Collaborating closely with our clients to ensure they understand model outputs and processes
• Mentoring and training of graduate modellers and providing guidance to support their professional development
• Specification and management of flow surveys
• Undertaking a checking and/or technical lead role of model build, verification and optioneering projects
• Completing complex modelling tasks where required
• Contributing and checking technical reports and presentations
• Developing technical calculation outputs when needed
• Opportunity to project manage infrastructure projects, if interested. This will involve being responsible for programme, commercial performance and technical excellence

Mott MacDonald offers a highly innovative and collaborative environment within which to further develop your career. We can offer development in technical, management or client‑facing directions, or a combination thereof – you will have control of your own career path and great prospects for career progression as the business continues to grow.

Key abilities and qualifications

• Ability to be a team player and develop relationships at all levels
• Working collaboratively with clients as delivery lead, planning and delivering wastewater modelling projects of varying sizes
• Qualified candidates should have a strong working knowledge of InfoWorks ICM as well GIS packages
• Project Management experience and skills would be advantageous but not required
• Chartered with a relevant professional institution (i.e. ICE or CIWEM)
• Excellent skills in spreadsheet data analysis (i.e: using MS Excel pivot tables or PowerBI)
• Programming skills in languages such as VBA or Python would be advantageous

UK Immigration

Mott MacDonald Ltd. are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. This decision is as a consequence of the changes made to the Skilled Worker route by the UK Government in April 2024. We continue to welcome applications from candidates who are eligible for alternative immigration routes in the UK, that do not require sponsorship as a Skilled Worker now or in future.

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.

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.

We offer some fantastic benefits including:

Financial wellbeing

• We match employee pension contributions between 4.5% and 7%.
• Life assurance equal up to 4 x your basic salary, with an option to increase the level of cover to 6 x 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.

Employee Ownership

• Our employee ownership model means no external investors, just us, creating a culture of shared success.
• Our employees have a stake and a voice in our business, giving them a direct connection to our success through our personal and group performance bonuses.
• As your career grows, so does your stake, recognising your long‑term impact and contribution.
• Your voice matters, with the opportunity to connect directly with senior leadership through formal channels to help shape our future.
• For our senior roles you will have a direct pathway towards ownership from day one.

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 program, 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.

Lifestyle

• 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.

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

#J-18808-Ljbffr