03 May, 2022

Principal Process Engineer

  • Arup
  • Cardiff, UK
Process Engineer Water & Waste

Job Description

About Arup

Arup is an employee-owned firm of designers, planners, engineers, consultants, and technical specialists. We are passionate about water, the natural environment, and communities. We are proud of our friendly, talented, diverse team of creative and curious individuals. We imagine and deliver projects which make places and communities better. Sound interesting? We would love to meet you.

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.

About us

Our mission is to make a difference and shape a better, more sustainable world.  We aim to be the water consultant of choice – delivering outstanding service and adding value to our clients.  

Across the West of the UK, we have a team of 150+ multi-disciplinary water engineers working closely together on a wide variety of flood and coastal risk management, waste and clean water infrastructure, and non-infrastructure assets. Our work is hugely rewarding, making a positive difference to people and the environment as well as pushing the boundaries of digital innovation. 

Our independence, enabled by our employee ownership structure, fosters a distinctive culture.   This is reflected in everything we do, allowing us to develop meaningful ideas, help shape agendas and deliver results that frequently surpass the expectations of our clients. It also gives individuals the freedom to develop in a supportive and stimulating environment where creativity, innovation, collaboration, and diversity of teams are hugely valued.  Our independence allows us to invest in our own bespoke research to develop our knowledge and digital tools.  All employees own shares in Arup and so have an invested interest in its success and ambitions. 

Our home offices are based in Cardiff, Bristol, and Winchester.  We enjoy the benefit of ‘Work Unbound’ our policy of encouraging flexible working and supporting a healthy work-life balance. 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.

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. 

About 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
  • 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.


  • Commissioning and process optimisation experience
  • Process safety DSEAR, ATEX
  • Anaerobic treatment or Sustainable and zero-carbon approaches to Process design
  • A desire to explore new digital and data-driven solutions to our and our client's problems
  • Commercial awareness and keen to learn about the business side of our operations
  • Experience in leading teams to achieve great outcomes.


Rewards and Benefits

We offer a competitive salary at all levels, and one of the best benefits packages in our sector.

Core benefits include cover under the UK Healthcare Plan (private medical insurance), Life Assurance, Accident Insurance, and Income Protection (long term disability) cover. Core benefits are funded by us and made available to all permanent staff in order to support and safeguard your financial, physical, and mental wellbeing. You will also have access to Choice Benefits to help with your work/life balance and financial security.

In addition, all permanent employees are eligible for the Global Profit Share scheme. Subject to scheme rules employees can receive two Profit Share payments per year, which are dependent on the firm’s financial performance.

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.

What happens next?

If this could be the next step in your journey, please apply online. All applications will be considered, and we will try our very best to respond to you within 72 hours of receiving your application.

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

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