RSE
Process Design Engineer

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Process Design Engineer
What Are We Looking For?
Our Treatment Solutions Process team is expanding with the appointment of an experienced Process Design Engineer who will be responsible for the design and development of new & innovative products for both water and wastewater-treatment industries. The successful candidate will provide design input, whilst formulating and developing new product designs for clients.
Some Of Your Key Duties Include
Develop standardised process designs for water and wastewater treatment products. Prepare process models, mass balances, equipment sizing, and performance projections. Preparation of PFDs. Preparation of Process Calculations. Preparation of Control Philosophies. Working with a multidisciplinary team to integrate process requirements into the overall product design. Evaluate new technologies within the market. Ensure all technical documentation aligns with regulatory and industry standards.
What Do You Need?
As a Process Design Engineer, the ideal candidate will possess strong technical knowledge in the design of water or wastewater projects. Ideally you will be able to demonstrate prior experience of problem-solving abilities to meet client specific requirements.
Process design engineering experience within wastewater environments is essential. Experience of working at all design stages, from optioneering/FEED through to construction support, commissioning and As-Built. Possess the ability to work on multiple products consecutively. Experience of optioneering and technology selection. Knowledge of current design Standards covering British Standards and Eurocodes. Ability to follow/interpret/explain technical instructions. Knowledge in strategic planning and risk management. Experience of working with membrane technology would be advantageous. Ability to plan and organise day to day workloads within a busy design and build environment. Experience of piloting, commissioning and trouble shooting water and wastewater technologies (Desirable). Full UK Driving Licence.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
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Who Are We?
RSE is a trusted water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in industrial processes. We are disrupting the water sector, delivering water treatment products, technologies, and services to clients across the UK. RSE provides offsite modular build solutions using a low-carbon approach compared to traditional construction methods and our unique offering to the market focuses on innovation, efficiency, and excellence.
Established in 1982, RSE has grown into one of the most prominent MEICA engineering businesses in the UK water industry. We have created a complete in-house and full-service capability from project inception through to design, fabrication, and delivery by means of installation and commissioning. We additionally have one of the largest servicing and maintenance teams in the market, to ensure we’re on hand for all our clients’ needs.
Our service offering presents industry-leading innovative solutions and our dedicated staff play a key role in delivering our sustainability and wider business goals. With over 2000 staff across our group of companies, our strategic ambition will see the business continue to grow as we expand our operations and diversify our products. One of RSE’s key focuses is driving servant leadership and giving our people the opportunity and responsibility to take an entrepreneurial approach in their career development.


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What RSE Offer
To build successful teams and drive the level of quality that RSE is renowned for, we know we need the best people in the industry. Not only do we require the relevant skillsets, but we also need people with the right attitude and mentality to thrive and grow in an innovative and fast-paced environment. At RSE, you’ll be given every opportunity to set the path of your own career through our Business Streams and work within dynamic teams that will require you to rise to the challenge of working for a market leader.
Industry-leading salary based on your experience. A flexible career development path, with no restrictions on where your career can go. Private Healthcare (Personal). Holiday Allowance of 31 days per year, rising to 33 days per year after 2 years’ service. Holiday Buy / Sell Scheme. Company Pension Scheme. Cycle to Work. Discounted National Gym Membership. Professional Fees Paid. Employee Discount Platform. EV/Hybrid Car Lease Scheme. Access to our network of health professionals including mental health champions and Occupational Health Nurse.
In a flourishing sector where there are vast career opportunities available, we believe by leading transformation in the industry our offering to the market means our people have the space to thrive.
If you’re interested in a career with a company that will harness your skills and provide you with the support to create your own future within the water industry, apply now
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