Mott MacDonald
Senior Wastewater Network Modeller
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Senior Wastewater Network Modeller
Location/s: Bristol, Cardiff, Reading, Newcastle, Manchester, Brighton, Edinburgh, Derby, Leeds & London; UK Recruiter contact: Nicola Coyle Mott MacDonald
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. We deliver transformational projects, ensuring safe water supplies for future generations, preventing urban flooding, and improving the health of rivers and coastal environments.
Our multi-disciplinary teams provide services across the full project lifecycle, from feasibility studies to detailed design, and offer diverse, technically stimulating opportunities to all.
Overview of the Role
We’re seeking a driven, experienced Senior Wastewater Network Modeller to join our team of innovative network modellers, engineers, and project managers, delivering projects across the UK.
As a Senior Modeller, you’ll provide technical guidance on wastewater infrastructure projects, from feasibility through to detailed design, and contribute to innovation sprints, external conferences, and strategic direction. This role entails mentoring team members, managing projects, and presenting your work to clients and stakeholders.
Key responsibilities include:
- Delivering wastewater infrastructure projects of varying complexities
- Collaborating with clients to interpret model outputs and processes
- Mentoring and training graduate modellers for professional development
- Specifying and managing flow surveys
- Checking or leading model builds, verification, and optioneering projects
- Completing complex modelling tasks
- Reviewing technical reports and presentations
- Developing technical calculation outputs
- Optional: Project managing infrastructure projects (oversight of programme, commercial performance, and technical excellence)
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Mott MacDonald provides a collaborative, innovative environment for career growth—whether your direction is in technical consulting, management, client-facing roles, or a combination. There are clear prospects for advancement as the business expands.
Candidate Specification
Essential Requirements
- Ability to develop team relationships at all levels
- Collaborative delivery lead—planning and executing wastewater modelling projects of varying sizes
- Strong communication skills
- Proficient in InfoWorks ICM (and experience with GIS packages)
- Project Management experience (advantageous but not mandatory)
- Chartered status with a relevant professional institution (e.g., ICE or CIWEM)
- Excellent spreadsheet data analysis skills (e.g., MS Excel pivot tables or PowerBI)
- Advantageous: Programming skills in VBA or Python
UK Immigration Note
Mott MacDonald cannot sponsor candidates under the Skilled Worker visa route due to recent UK Government policy changes. Applications under other immigration routes are welcome if you are eligible.
Why You’ll Importance to Us
Work Flexibility
We believe in trust-based hybrid working, accommodating your well-being, flexibility, and individual responsibilities.
Equality, Diversity, and Inclusion
Inclusivity is embedded in our business culture, ensuring equal opportunities and fair employment practices. Diversity matters, as does fostering an environment where everyone can thrive.
Accessibility Support
If you require adjustments during the recruitment process (e.g., reasonable accommodations), contact: reasonable.adjustments@mottmac.com.
Benefits Package
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Financial Wellbeing
- Pension match: 4.5%–7%
- Life assurance: Up to 4x salary (boostable to 6x)
- Income protection: Financial benefit and support for long-term illness/injury
- Flexible benefits: Life assurance upgrades, critical illness insurance, and payroll savings
Employee Ownership
As an employee-owned company, we reward colleagues with:
- Performance bonuses: Including group and personal share schemes
- Increased stake with seniority
- Direct access to leadership for shaping company goals
Health and Wellbeing
- Private medical insurance
- Health cash plan for everyday care
- Access to Peppy (menopause support)
- Personal and family wellbeing support
- Option to flex salary for enhanced health coverage
Lifestyle
- 33–35 days holiday per year (minimum 35 after 5 years)
- Early retirement/savings discounts
- Variety of employee savings schemes
Family and Carer Support
- Extended paid parenting leave (e.g., 26 weeks maternity/adoption, 2 weeks partnerships, shared parental leave)
- Five additional paid/unpaid days for carers with significant responsibilities
Learning and Development
- Annual subscription to your professional institution
- Access to mentorship, training, and skills development
Social Impact
- Join employee networks supporting diversity (e.g., LGBTQ+, race, disability)
- Participate in community-focused initiatives
Apply now or learn more about the process: [Link provided]
Locations: Bristol, Newcastle Upon Tyne, Leeds, Derby, Cardiff, Edinburgh, Brighton, London, Manchester, Reading Contract Type: Permanent Work Pattern: Full Time Market: Water Discipline: Water Job Ref: 15084 Recruiter Contact: Nicola Coyle
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