Senior Waste Water Engineer


Cardiff, UK 🇬🇧

Senior Waste Water Treatment Engineer

Why Arup?  

Are you passionate about building a more sustainable future? At Arup we work to find solutions for some of the world’s most complex problems – providing expertise across all areas of the built environment from strategic approach and planning to design and engineering. 

Join us and you will have the freedom to push boundaries, develop new skills and work on some of the world’s most inspiring projects. We believe that by giving our people the freedom to be creative, we will produce work that continuously redefines quality across our firm. Whatever the role or specialism, our people are passionate about what they do, they believe in our values and are happy to come to work every day. And this is why people choose to work here and stay.  

The Opportunity

We are seeking a senior process engineer to help lead our municipal wastewater treatment schemes. We are looking for an individual who is passionate about water treatment, communities, and the environment. You will be an active member of our growing process team in Cardiff working on a varied workload of wastewater schemes varying from feasibility to detailed design. The role will be supporting a range of projects including treatment upgrades for water quality improvements, supporting water company long-term strategies, and assessing new treatment technologies and approaches.As part of a multi-disciplinary design team you will collaborate with civil, mechanical, electrical engineers and construction partners to deliver wastewater treatment schemes from option selection through to commissioning. The role is very client-focused to bring the client along with the design process, informing them of key design decisions, and communicating progress.

This role also brings the potential for future leadership opportunities, building on our current business in the wastewater sector. Arup is passionate about knowledge and research and we operate an open culture, supporting all team members in both collaborating and contributing their knowledge to solving problems and developing new approaches. As a senior member of a growing team, you will mentor and delegate work amongst engineers, supporting them with your experience. You will have the opportunity to make a difference – to Arup, to your career, to our staff, and to the clients and communities we serve. 

We work closely with colleagues across the UK and Ireland, Particularly, Leeds, Belfast, Dublin, and Birmingham. If you live near to one of these offices, we would also be happy to hear from you and with secured frameworks, we have a strong forward pipeline of opportunities with clients who share our passion for shaping a better world such as Welsh Water. 

Is this role right for you?

We’re looking for a process engineer with curiosity, personal drive, and technical know-how. You will be as inspired as we are by the problems we are solving and excited to help clients and lead teams delivering the solutions. Engineering experience in the UK water sector is essential.  

If you have some or all of these skills and experience and a passion for delivering high-value solutions, we’d love to hear from you. We’re looking for the following qualifications, attributes, and skills:

  • A relevant degree and Chartered Engineer status
  • A recognised Subject Matter Expert in the field of water process engineering, Anaerobic treatment or Sustainable and zero-carbon approaches to Process design
  • An excellent understanding of treatment solutions for wastewater schemes looking at phosphate removal, growth, UWWTD drivers, and other consent modifications.
  • Experience of working in or leading multi-disciplinary engineering teams to ensure the production of deliverables to agreed timelines and within budget
  • A flexible thinker with a focus on continual improvement and a desire and ability to share knowledge and proactively mentor and manage teams and individuals.

Not ready to apply just yet, or have some questions? Contact me via email at Please note that all applicants must apply directly via the job portal. 

If this role is not quite what you are looking for but you are interested in other opportunities, please sign up to our Talent Community where you will be kept up to date with roles suitable for you.’  

Rewards and Benefits 

We care about you and want you to perform at your best, which is why we offer one of the most competitive benefits packages in our sector. 

As a member organisation, everyone shares in our success through a global profit share scheme (payments are dependent on the firm’s financial performance). 

We also provide Private medical insurance, Life assurance, Accident insurance and Income protection cover. In addition, you’ll have access to flexible benefits to help you look after all aspects of your wellbeing and give you the freedom and flexibility to find the best solutions for you, your family, and your individual needs. 

Different people, shared values. 

At Arup, we believe when talented people collaborate, great things are possible. Arup hires people with proven skills and open minds. We are taking deliberate action to create an inclusive culture that is grounded in our purpose to shape a better world. 

At Arup, we welcome candidates from all backgrounds, regardless of age, disability, gender, gender identity, gender expression, race, religion or belief, sexual orientation, socioeconomic background, and any other protected characteristic. Our internal employee networks – BAME, Culture, Disability, LGBTQ+ and Women – provide a space for you to express your views and to make a positive difference – discover more about life at Arup here. 

At Arup, we are committed to making all stages of our recruitment process accessible to candidates with disabilities. Please speak to our recruitment team and we will work with you to make reasonable adjustments to ensure you can perform at your best throughout your application. 

At Arup, we appreciate that everyone’s circumstances are different and having the freedom to flex the way we work is essential to our wellbeing. If flexibility matters to you let us know when you apply, and we will discuss how this could work in your role. 

Our Application Process 

To understand what to expect next, please visit our UK Application Process page. 

Stay safe online – Arup will never ask for payment or your bank details as part of our recruitment process. 





IHE Delft MSc in Water and Sustainable Development