Joining Arup

Arup's purpose, shared values and collaborative approach has set us apart for 80 years, guiding how we shape a better world.
Our process chemical and process engineering team comprises specialist chemical engineers, scientists and industrial experts who shape everything from conceptual design ideas through pre-FEED and FEED to completed turnkey facilities. We support projects at all stages of delivery, ensuring safe, regulatory compliant solutions. We focus on design development, process optimisation, debottlenecking and control of chemical, physical, and biological process, from hydrogen production to carbon capture and transformation through to water and wastewater treatment.

We are looking for candidates with a background in Process engineering design on multi-disciplinary projects within the municipal and industrial water sectors. With our depth and breadth of skills, our team is currently involved in many exciting projects across the Energy, Water and Resources sectors.

The opportunity

Join Arup's Cardiff Water team and help shape a more sustainable future. As a Process Engineer, you'll contribute to projects that improve water quality, protect the environment, and support communities for generations to come. From tackling complex water and wastewater treatment challenges to developing innovative, low-carbon solutions, your work will have a real and lasting impact.

You'll become part of a growing and collaborative process engineering team, working on a broad range of projects that span the entire project lifecycle. From root cause investigations, feasibility studies and optioneering through to detailed design and commissioning support, you'll have the opportunity to influence key decisions and see your ideas become reality. Working alongside multidisciplinary teams of civil, mechanical, electrical and environmental specialists, you'll help deliver practical and sustainable solutions for our clients and communities.

At Arup, we believe that diverse perspectives drive better outcomes. You'll be encouraged to bring your ideas, develop your expertise, and take ownership of your career while working in an environment that values learning, innovation and collaboration. Whether you're looking to deepen your technical knowledge or progress into project leadership, you'll be supported every step of the way.

If you're passionate about water, sustainability and making a positive difference through engineering, we'd love to hear from you.

What we’re looking for:

• Experience in water and/or wastewater process engineering.
• Understanding of water treatment processes and the UK water sector.
• Degree qualified in Engineering or a related discipline.
• Chartered Engineer status, or working towards chartership.
• Experience developing process design documents, including mass balances and P&IDs.

• Familiarity with HazOP studies and regulated environments.

• Strong planning and organisational skills, with the ability to manage multiple priorities.
• Good communication skills and experience working with multidisciplinary teams and stakeholders.
• A collaborative approach and willingness to support junior team members.

***Unfortunately, we are unable to offer visa sponsorship for this role. Applicants must have the right to work in the UK at the time of application and for the duration of employment. Any offer made will be subject to satisfactory proof of immigration status.***

What we offer you

At Arup, we care about each member’s success, so we can grow together.
Guided by our values, we provide an attractive total reward package that recognizes the contribution of each of our members to our shared success. As well as competitive, fair and equitable pay, we offer a career in which all of our members can belong, grow and thrive – through benefits that support health and wellbeing, a wide range of learning opportunities and many possibilities to have an impact through the work they do.

We are owned in trust on behalf of our members, giving us the freedom, with personal responsibility, to set our own direction and choose work that aligns with our purpose and adds to Arup’s legacy. Our members collaborate on ambitious projects to deliver remarkable outcomes for our clients and communities. Profit Share is a key part of our reward, enabling members to share in the results of our collective efforts.

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

Arup is an equal opportunity employer that actively promotes and nurtures a diverse and inclusive workforce. We welcome applications from individuals of all backgrounds, regardless of age (within legal limits), gender identity or expression, marital status, disability, neurotype or mental health, race or ethnicity, faith or belief, sexual orientation, socioeconomic background, and whether you’re pregnant or on family leave. We are an open environment that embraces diverse experiences, perspectives, and ideas – this drives our excellence.

Guided by our values and alignment with the UN Sustainable Development Goals, we create and contribute to equitable spaces and systems, while cultivating a sense of belonging for all. Our internal employee networks support our inclusive culture: from race, ethnicity and cross-cultural working to gender equity and LGBTQ+ and disability inclusion – we aim to create a space for you to express yourself and make a positive difference. Discover more about life at Arup at www.arup.com/careers/your-life-at-arup

We are committed to making our recruitment process and workplaces accessible to all candidates. Please contact maria.mindrut@arup.com to let us know if you need any assistance or reasonable adjustments throughout your application or interview process, and/or to perform the essential functions of the role. We will do everything we can to support you.

Our Application Process

To understand what to expect next, please visit https://www.arup.com/careers/arup-careers-uk-application-process
Stay safe online – Arup will never ask for your bank details as part of our recruitment process.

Recruitment Agencies - We have a Preferred Supplier List of trusted partners to assist us when required and do not acknowledge any speculative CVs or unsolicited candidate introductions from agencies not on the list.

Closing Date: 17.07.2026
We may close the role earlier than the advertised date should we receive a large number of applications, so please ensure you apply early.
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