Graduate Wastewater Modeller

Develops and analyses hydraulic models of rivers, drainage systems and wastewater networks to assess flood risks, improve drainage capacity and support climate-resilient infrastructure planning.

Let’s transform society together

We are Sweco. We are Europe’s leading design, engineering, environment and regulatory consultancy. We are future planners, city shapers, urban innovators, digital transformers, net zero chasers, community connectors, social enterprisers and lifestyle improvers.

At Sweco, we shape sustainable water solutions for communities and industries of all sizes. Our expertise covers every aspect of water and wastewater treatment and infrastructure—from initial feasibility studies through all design stages to construction and commissioning.

As trusted leaders in the water sector, our specialists are dedicated to delivering safe, clean drinking water, efficient wastewater recycling, and reliable water transit systems. We pride ourselves on developing innovative, sustainable solutions that help protect and enhance the environment for future generations.

What does the role involve?

As a Graduate Modeller, you will:
Support delivery of flood risk and urban drainage projects being undertaken for a range of clients

• Build and utilise hydraulic models of rivers, drainage systems and wastewater networks using industry standard software (Infoworks ICM, TUFLOW or similar)

• Analyse the performance of wastewater and drainage networks under current and future conditions, including the effects of climate change and population growth.

• Identify and assess sustainable options to improve the capacity, operation and resilience of wastewater networks

• Identify the causes of flooding and develop options to reduce flood risk

• Use GIS to analyse data and map flood extents

• Contribute to planning applications, flood risk assessments and drainage strategies.

• Prepare technical reports, drawings and presentations

Who are we looking for?

Our unique, personalised programme is designed for passionate, forward-thinking graduates who want to change the world around them, who will thrive in a dynamic team environment, and who are hungry to collaborate not only with fellow graduates, but also with mentors and leaders across the business.

What do you need to apply?

We want to hear from you if you…
• Have a degree relevant to the role you’re applying for.
• Have less than 12 months of relevant work experience (excluding placements).
• Are confident using Microsoft Office and other relevant digital tools.
• Are driven, proactive, and solution-oriented.
• Can work in the UK without restrictions either now or in the future. This is a permanent role, and we’re looking for candidates who can grow their careers with Sweco without a time limit.

What’s in it for you?
Our Graduate Scheme offers a two-year blended learning experience, with a tailored programme delivered virtually and face-to-face. You’ll have the chance to network and grow with the 2027 cohort. Personal growth will be supported by our Early Careers team, mentors and subject matter experts from across the business.

Structured masterclasses focus on Internal Insight, Skills Development, and Subject Matter Expertise, helping fast-track your development as you pursue professional accreditation. The programme builds your confidence early in your career and gives you a platform for genuine impact within Sweco.

You’ll receive a permanent position with an industry-standard salary and benefits package, including 25 days holiday, a great pension and life assurance.

Employee Benefits

• Flexible and hybrid working (Flexworks Policy)

• Competitive pension contribution

• Life Assurance

• Private Medical Insurance

• Discretionary Annual Bonus Scheme

• Payment of two relevant professional subscriptions

• 25 days holiday plus bank holidays (with the option to purchase up to 5 additional days per year)

• Cycle2Work Scheme

• Employee Assistance Programme (wellbeing, mental health, financial and work advice)

• Employee discounts via Sweco Benefit Select (Faircare)

• Salary Sacrifice Electric Vehicle Scheme

• We plant a tree for all new starters!

About Us

Transforming society together, we're planning and designing sustainable communities and cities of the future.

Solving the great societal challenges of our time is more relevant, demanding and inspiring than ever before. At Sweco, we bring together experts with different perspectives and skills to develop solutions that address the challenges of urbanisation, harness the positive power of digitalisation and make societies more sustainable.

We offer our clients a combination of global expertise and local presence, adapted to their business and reality.

Our ambition is to be our clients’ most relevant partner, working together to help them solve their challenges, today and into the future.

Sweco is committed to enabling all its colleagues to achieve a great balance between work and their other priorities, such as caring responsibilities, leisure activities, further learning or other interests. We offer flexible start and finish times, part time and hybrid working options so that you can flex your hours around your day to day needs.

Equality, Diversity & Inclusion

It’s important to us that that all our colleagues thrive at work - we strive to have a friendly and inclusive culture which respects the contribution individuals can bring to Sweco. We aim to promote equality, inclusivity and diversity for everyone.

Here at Sweco we positively encourage applications from suitably qualified and eligible candidates regardless of sex, race, disability, age, sexual orientation, gender reassignment, religion or belief, marital status, pregnancy or maternity/paternity.