Principal / Associate Director Wastewater Hydraulic Modeller

AtkinsRéalis Group; West of England; On-site; GBP 90,000 - 130,000; Full time

Job summary

AtkinsRéalis is seeking a Principal/Associate Director for Wastewater Hydraulic Modelling in the Bristol/Cardiff area. You will lead hydraulic modelling initiatives, supervise teams, and drive catchment strategies for major UK water projects.

The role requires expertise in InfoWorks ICM, ICM Exchange, MS 365 apps, PowerBI and SharePoint, with a track record in project leadership and delivering high-quality technical outputs.

Qualifications

• Understanding of UK water industry and regulatory issues.
• Proven track record coordinating and delivering technically excellent projects.
• Expertise using InfoWorks ICM and ICM Exchange.
• Expertise in hydraulic modelling, catchment planning, and solution development.
• Ability to review others’ work to provide quality assurance and drive continuous improvement.
• Excellent collaboration and communication skills.
• Expertise in MS 365 apps and knowledge of PowerBI and SharePoint.
• Experience with software such as FME, Optimatics, Ruby would be advantageous.
• Relevant degree or vocational qualification.
• Chartered with ICE or CIWEM would be advantageous.

Responsibilities

• Lead Storm Overflows Discharge Reduction Plan, flood alleviation, and environmental solution development projects.
• Lead model build, model maintenance, and verification projects.
• Lead the development and delivery of wastewater catchment strategies and solutions.
• Ensure quality of outputs and compliance with standards & specifications.
• Drive continuous improvement in project delivery.
• Manage and/or support project managers to manage projects and programmes of works.
• Support the development of tender responses and fee estimates.
• Supervise and develop staff, providing guidance to support their professional development.
• Contribute to technical innovation and lead improvement workgroups.

Skills

Collaboration

Verbal & written communication

Team leadership

Project coordination

Education

Relevant degree or vocational qualification

Tools

InfoWorks ICM

ICM Exchange

PowerBI

SharePoint

MS 365

FME

Optimatics

Ruby

Job description

Overview

Work with AtkinsRéalis to make the world’s outlook brighter and healthier. You might know us for the great work we do across a wide range of projects. We’re proud to say it’s thanks to our people’s diversity of thought, expertise, and knowledge, and when you join us, you’ll be part of a genuinely collaborative environment where everyone’s voice is valued and treated equally.

We’re passionate about what we do, and we have a thriving team culture. Our collaborative and multi-disciplinary team is one of the largest in the UK, providing water and wastewater infrastructure services alongside drainage design, SuDS, and surface water management. Our clients span across the UK and internationally, including water companies, local authorities, highways/rail authorities, and developers.

It is an exciting time to be working for our UK Water business with unprecedented investment in the water industry. Due to continued framework successes, we seek to recruit a Principal / Associate Director Wastewater Hydraulic Modeller to join our Wastewater Team in Bristol/Cardiff to lead one of our hydraulic modelling frameworks for a leading UK Water Company.

We aren’t just engineers, environmental professionals, or consultants. We’re pioneers, constantly innovating and pushing boundaries to tackle the world’s most pressing challenges—especially when it comes to water. From enhancing our rivers and urban landscapes to building sustainable cities in harsh environments, our Networks & Drainage Solutions (N&DS) team is at the forefront.

Over the next 10 years, we plan to expand the practice rapidly to meet our clients’ objectives. We’re developing enhanced training courses to accelerate our staff’ resource capability, creating great futures for both new and experienced colleagues.

The opportunities to grow as an individual are immense. You’ll receive mentorship from outstanding leaders in the team, with a personal development plan that puts you in the driving seat of your career.

Your role

• Lead Storm Overflows Discharge Reduction Plan, flood alleviation, and environmental solution development projects.
• Lead model build, model maintenance, and verification projects.
• Lead the development and delivery of wastewater catchment strategies and solutions.
• Ensure quality of outputs and compliance with standards & specifications.
• Drive continuous improvement in project delivery.
• Manage and/or support project managers to manage projects and programmes of works.
• Support the development of tender responses and fee estimates.
• Supervise and develop staff, providing guidance to support their professional development.
• Contribute to technical innovation and lead improvement workgroups.

About You

• Understanding of the UK Water industry and regulatory issues.
• Proven track record in coordinating and delivering technically excellent projects.
• Expertise using InfoWorks ICM and ICM Exchange.
• Expertise in hydraulic modelling, catchment planning, and solution development.
• Ability to review others’ work to provide quality assurance and drive continuous improvement.
• Excellent collaboration and communication skills.
• Expertise in MS 365 applications and knowledge of PowerBI and SharePoint.
• Experience with software such as FME, Optimatics, Ruby (or similar) would be advantageous.
• Relevant degree or vocational qualification.
• Chartered with a relevant professional institution (i.e. ICE or CIWEM) would be advantageous.

Rewards & benefits

Explore the rewards and benefits that help you thrive at every stage of your life and career. Enjoy competitive salaries, employee rewards, and a broad range of benefits you can tailor to suit your health, wellbeing, financial, and lifestyle choices. Take advantage of abundant training and professional development opportunities, and combine our hybrid working culture with flexible holiday allowances to balance a great job with a fulfilling personal life.

About AtkinsRéalis

We’re AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data, and technology to transform the world’s infrastructure and energy systems. Together with our industry partners and clients, and our global team of consultants, designers, engineers, and project managers, we can change the world. We are committed to leading our clients across our various end markets to engineer a better future for our planet and its people.

Additional Information

This role may require security clearance, and offers of employment will be dependent on obtaining the relevant level of clearance. If necessary, this will be discussed with you at interview. The vetting process is delivered by United Kingdom Security Vetting (UKSV) and may require candidates to provide proof of residency in the UK of 5 years or longer. If applying to this role, please do not reference or include any current or previously held security clearance details in conversation, application, or CV.

We are committed to creating a culture where everyone feels that they belong—a place where we can all be ourselves, thrive, and develop to be the best we can be. We offer a range of family‑friendly, inclusive employment policies, flexible working arrangements, and employee resource groups to support all employees. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures, and abilities.