Wastewater Modellers- UK Wide in Musselburgh

At Jacobs, we are challenging today to reinvent tomorrow by solving the world’s most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact:

Join Jacobs at a pivotal moment in the UK and Ireland water sector, where investment is at record levels and the opportunity to shape transformative infrastructure is real. As a Wastewater Modeller, your expertise will directly influence the success of major water programmes that improve communities and protect the environment. At Jacobs, you’ll be part of a collaborative team working with the region’s largest water companies—from early feasibility and planning through to design, construction, and long-term operations. Your modelling insights will help drive smarter, more sustainable solutions across England and Ireland.

We’re looking for professionals who are ready to take the next step in their career—those who want to be challenged, supported, and empowered to make a difference. Whether you’re refining hydraulic models, supporting flood risk assessments, or contributing to climate resilience strategies, your work will matter.

Responsibilities:

• Responsible for supporting the technical delivery and Project Manager to ensure the successful delivery of robustly defined technical solutions.
• Experience in network hydraulic modelling (InfoWorks ICM).
• Work as part of a team involved in a variety of projects including model build and verification, using existing models to understand system performance.
• Optioneering and solutions development of flooding and CSO drivers.
• Interacting directly with various personnel in our client’s organisations, including face to face progress meetings.
• Investigation, analysis and resolution of drainage network issues.
• Scoping of network surveys to supplement model updates.
• Review and manage weekly contractor survey submissions.
• Building and maintaining hydraulic models.
• Delivery of technical reports and hydraulic modelling studies.
• Undertake the development of modelled engineering solutions to mitigate the effects of development, to solve sewer flooding and to address unsatisfactory overflows.
• Assist with the preparation of cost estimates for modelling.
• Supervise site surveys and field investigations.
• Plan, programme, co-ordinate and write reports for specific projects.
• Providing guidance and support to graduate engineers or technicians.

Here’s what you’ll need:

• Proficiency in wastewater modelling software such as InfoAsset Manager, and InfoWorks ICM.
• Working knowledge of GIS tools (MapInfo, ArcGIS).
• Ability to work to client specifications and industry standards.
• Demonstrable track record of technical achievement and client satisfaction within the water industry.
• Capable of building and maintaining strong relationships with internal staff and external clients.
• Ability to be flexible and to be able to multi-task and prioritise when necessary.

What We Offer:

• Up to 10% company contribution into their pension.
• Reimbursement towards relevant professional development and memberships.
• Opportunity to buy/sell annual leave.
• Free employee medical cover and digital GP service.
• Enhanced parental leave pay.
• Fertility healthcare and family-forming benefit provided by Carrot.
• Hybrid working.
• Part-time roles.
• Flexible working hours.

Joining Jacobs not only connects you locally but globally. Our values stand on a foundation of safety, integrity, inclusion and belonging. We put people at the heart of our business, and we truly believe that by supporting one another through our culture of caring, we all succeed. We value positive mental health and a sense of belonging for all employees.

With safety and flexibility always top of mind, we’ve gone beyond traditional ways of working so you have the support, means and space to maximize your potential. You’ll uncover flexible working arrangements, benefits, and opportunities, from well-being benefits to our global giving and volunteering program, to exploring new and inventive ways to help our clients make the world a better place. No matter what drives you, you’ll discover how you can cultivate, nurture, and achieve your goals – all at a single global company.

We aim to embed inclusion and belonging in everything we do. We know that if we are inclusive, we’re more connected and creative. We accept people for who they are, and we champion the richness of different perspectives, lived experiences and backgrounds in the workplace, as a source of learning and innovation. We are committed to building vibrant communities within Jacobs, including through our Jacobs Employee Networks, Communities of Practice and our Find Your Community initiatives, allowing every employee to find connection, purpose, and belonging.

Jacobs partners with VERCIDA to help us attract and retain talent from a wide range of backgrounds. For greater online accessibility please visit to view and access our roles.

As a disability confident employer, we will interview disabled candidates who best meet the criteria. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.

We value collaboration and believe that in-person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.

Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via.