Egis
Process Engineer - Water / Wastewater
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Process Engineer – UK Water/Wastewater
Water | Wastewater | Biosolids/Sludge | AMP 8 | SROs | MEP-Led Team
Shape the future of water infrastructure with Egis.
Locations: London, Bristol, Manchester (Hybrid) Focus: Process Engineering Design | Impact: UK-Wide | Culture: High-Growth, Agile Environment
Egis is rapidly expanding in the UK, supported by a global team of over 23,500 experts across 70+ countries. We design and deliver intelligent, sustainable infrastructure to tackle climate challenges and strengthen community resilience. As part of our growing UK Water team, you’ll join an environment where growth is fast, visibility is high, and your impact is immediate.
About the Role
The UK water sector is undergoing a period of unprecedented investment and transformation. As Egis accelerates growth in its Water Business across the UK, we are building a high-performing Process Engineering team to shape this critical phase.
We are seeking applicants who want to contribute meaningfully to major UK water and wastewater programmes, spanning municipal and industrial sectors. In a multi-disciplinary, collaborative setting, you will help deliver technically robust, sustainable and innovative treatment solutions for nationally significant projects.
This is an exceptional opportunity to join at a pivotal stage in our UK expansion: shaping, establishing, and growing a talent-centric process engineering capability, built on Egis’ global expertise and long-term commitment to water infrastructure.
Key Responsibilities
- Contribute to process design packages at all stages (feasibility, optioneering, concept, outline, and detailed design) for UK water/wastewater treatment projects.
- Prepare critical deliverables under senior guidance:
- Process calculations & mass balances
- Basis of design reports
- Process flow diagrams (PFDs)
- Piping and Instrumentation Diagrams (P&IDs)
- Sketches, datasheets, schedules & technical notes
- Support option development, treatment process selection and assessment of hydraulic/process capacity and existing treatment assets.
- Conduct site visits, asset surveys, and data collection, engaging with operators, suppliers, and technology providers.
- Collaborate across multi-disciplinary teams (Mechanical, EICA, Civil/Structural, Architectural, and Construction) to align technical recommendations.
- Contribute to design and operational safety studies, including:
- HAZOP, SWIFT, DSEAR
- Health and Safety (HAC/HAP) reviews
- CDM/safety-by-design assessments
- Utilise spreadsheets, process tools, data analysis, and modelling/simulation to inform evidence-based design decisions.
- Support contractor/supplier evaluations, technical queries, commissioning strategies, performance testing, and handover processes as required.
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Requirements
Minimum
- Relevant degree (BEng, MEng or equivalent) in Chemical Engineering, Process Engineering, or a closely related discipline.
- 4+ years of relevant process design experience, preferably within:
- Water/wastewater
- Biosolids/sludge treatment design
- Hands-on experience with:
- Preparation of process design deliverables (calculations, mass balances, P&IDs, PFDs, basis of design reports, technical specifications)
- Understanding of water/wastewater treatment processes, process safety, CDM/safety-by-design, and quality assurance.
- Ability to work effectively within multi-disciplinary teams to deliver buildable and operable treatment solutions.
- Strong digital skills for:
- Advanced Excel usage
- Process calculation, data analysis, or modelling/simulation tools
- Willingness to travel to operational works, construction sites, and supplier facilities as needed.
Desirable
- Specialised experience in:
- Wastewater treatment
- Clean water treatment
- Sludge/bioresources recovery
- Water reuse/recycling
- Nutrient removal
- Chemical dosing
- Low-carbon or energy-efficient treatment processes
- Familiarity with regulated environments such as:
- AMP 8 frameworks
- Water Industry NationalricES Procurement (WINEP) processes
- Sub-Regional Offices (SROs), Design & Build (D&B), framework/alliance delivery models.
- Proficiency in process modelling/simulation tools, such as:
- BioWin
- SUMO
- Dynamic/BioDu disadvantaging
- Progress towards professional registration (e.g., IEng or CEng) with a relevant institution, such as the Institution of Chemical Engineers (IChemE).
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Additional Information
What’s in It for You?
- Unparalleled career growth in a fast-track, high-impact environment with clear promotional opportunities.
- Top Employer 2025 accreditation – recognised globally for excellence in HR practices.
- A leader in green infrastructure designing and delivering innovative, climate-resilient solutions across mobility, energy, and the built environment.
- Competitive reward package, reflecting your contribution and expertise.
- Hybrid and flexible working arrangements to support a sustainable work-life balance.
- 26+ days annual leave plus UK bank holidays.
- Professional development support and guidance towards chartership.
- Global opportunities for mobility and growth within a diverse and international organisation.
- Inclusive and supportive culture rooted in sustainability, equity, and long-term community impact.
Ready to Lead?
Join Egis and help shape the future of sustainable water infrastructure across the UK. Your expertise will make a lasting difference—today and for generations to come.
Our Commitment to Sustainability
Every project we undertake is driven by a deep sense of responsibility to people and planet. Through the Egis Foundation, we fund initiatives to address the climate crisis, support education, and drive a just transition towards a sustainable world.
Equal Opportunities at Egis
As an Equal Opportunities employer, we are dedicated to a diverse, equitable workforce. Your applications will be assessed on experience, skills, and suitability for the role alone, regardless of:
- Age
- Disability
- Gender
- Ethnicity
- Religion or belief
- Socioeconomic background
- Protected characteristic (including sexual orientation and gender identity)
We pride ourselves on fostering an environment where every voice is heard, respected, and valued.
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