Egis Group
Process Engineer - Water / Wastewater
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Process Engineer – UK Water/Wastewater
Shape the Future of Water Infrastructure with Egis Locations: London | Bristol | Manchester (Hybrid) Water | Wastewater | Biosolids/Sludge | AMP 8 | SROs | MEP-Led Team
About Egis
Egis is one of the world’s most prominent engineering consultancies, backed by a global team of 23,500+ experts operating across 70+ countries. Our focus is on delivering intelligent, sustainable infrastructure to tackle climate challenges and enhance community resilience. As part of our fast-growing UK Water team, you’ll join an agile environment where progression is rapid, visibility is high, and your impact is immediate.
About the Role
The UK water sector is in a critical phase of transformation and investment as it embraces new technologies, sustainability priorities, and operational innovations. Egis is expanding its Water Business in the UK, and we’re building a high-performing Process Engineering team to ensure we deliver technically robust, sustainable, and forward-thinking treatment solutions—both for municipal and industrial sectors.
This position offers a rare opportunity to join at a pivotal stage of our UK growth, helping to establish, shape, and scale a water and wastewater engineering capability, drawing on:
- Egis’ global infrastructure expertise
- A long-term commitment to the sector
- A culture of innovation, collaboration, and visibility
You will contribute to nationally significant projects, shaping the next chapter of sustainable water and wastewater infrastructure in the UK.
Key Responsibilities
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Design & Deliverables:
- Contribute to process design packages across every stage – from feasibility and optioneering through to concept, outline, and detailed design.
- Generate technical deliverables under senior guidance, including:
- Process calculations & mass balances
- Process flow diagrams (PFDs)
- P&IDs (piping and instrumentation diagrams)
- Sketches, datasheets, schedules & application-specific technical notes
- Basis of Design reports
- Develop and assess process flows, hydraulic/process capacity checks, and technological recommendations.
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Technical Assurance & Analysis:
- Conduct site visits, asset surveys, and data collection activities, liaising with:
- Operators, vendors, and technology providers.
- Use spreadsheets, process modelling, and simulation tools to support decisions, including:
- Mass balances
- General data analysis
- Output synthesis for feasibility studies and upgrade consultations.
- Conduct site visits, asset surveys, and data collection activities, liaising with:
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- Collaboration & Safety:
- Work in multidisciplinary teams to align with mechanical, EICA, civil, structural, and architectural design requirements.
- Contribute to safety and compliance studies, such as:
- HAZOP (Hazard and Operability Studies)
- SWIFT (Silver Thread); CDM – safety-by-design; DSEAR (Detailed Safety Engineering and Risk Management);
- HAC/HAP (Hazard Assessment) reviews.
- Help review suppliers and contractors, contribute to commissioning strategies, and ensure technical compliance during handover.
Qualifications & Requirements
Minimum Requirements
- Degree in BEng/MEng (or equivalent) in Chemical Engineering, Process Engineering, or a related field.
- 4+ years’ experience in process design, with a focus on water, wastewater, and/or biosolids/sludge treatment.
- Direct hands-on experience in creating process design deliverables, including:
- Calculations; mass balances; PFDs/P&IDs; and baseline design reports.
- Strong understanding of:
- Water/wastewater treatment processes.
- Process safety protocols.
- CDM (Construction Design & Management); safety-by-design; quality assurance (QA).
- Proven ability to work within multidisciplinary teams, promoting integration between all design streams.
- Good digital competence:
- Proficient in Excel; with process modelling/simulation tools (e.g., BioWin, SUMO, Dynamitsu).
- Willingness to traverse operational plants, construction sites, or supplier facilities as required.
Desirable Additional Skills
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Hands-on expertise in specialised sectors, e.g.:
- Wastewater treatment.
- Clean water treatment.
- Biosolids/bioresource management.
- Water reuse/recycling (nutrient recovery, advanced treatment).
- Energy recovery and low-carbon treatment.
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Understanding of UK Asset Management Planning (AMP 8), Water Industry National Efficiency Programme (WINEP (2)), Scaling of Reduced Outage (SRO), and frameworks such as D&B or alliance delivery models.
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Experience in technical tender support, host contractor/supplier reviews, and commissioning’handover validations.
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Professional development progress toward Engineer Technician (EngTech; CMauE) or full Chartered Engineer (ChEng) qualifications with relevant bodies such as the Institution of Chemical Engineers (IChemE).
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Why Join Egis?
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Working at a landmark stage of growth – A once-in-a-career opportunity to unlock UK water-water-and-sustainability ambitions on a vibrant project docket.
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World-leader certification:
- Top Employers 2025 (nationally top-ranked for UK HR excellence and employee engagement).
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Global Sustainable Infrastructure Leader:
- Egis is at the forefront of mobility, energy, and greening cities, delivering sustainable solutions from end-to-end.
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Competitive Rewards Package (considering tier, experience and credibility).
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Genius with corporate & career flexibility:
- Agile hybrid working model.
- Generous 26+ days of annual leave + bank holidays (UK statutory structure).
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Professional & Personal Development:
- Chartership support for engineers.
- Career growth frameworks with opportunities to move into specialised academic oversight.
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Sustainable and inclusive culture:
- A company-wide commitment to ESG priorities, with initiatives to:
- Mitigate climate change (e.g., fosel and refurbishment projects).
- Drive community impact.
- Diversity, Equity, and Inclusion are embedded in Egis’ culture and all recruitment decisions.
- A company-wide commitment to ESG priorities, with initiatives to:
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Your impact matters: Each role you complete directly advances reduce the on communities, bring lose administrative matters into play, purified infrastructure, and resistant emergence.
Commitments to Diversity & Inclusion
We consider candidates from all backgrounds, regardless of age, disability, gender, gender identity, gender expression, race, religion or belief, sexual orientation, socioeconomic status and protected characteristics. Your relevance to the BM criteria is evaluated solely and objectively, ensuring true inclusive representation in every step of recruitment.
Egis Foundation: A meaningful portion of community-focused initiatives is carried out through Egis’ Foundation, through dedicated grants channelling into projects addressing education and climate crises.
Essential Information
- Applicants must possess the right to work in the UK.
- Business Line: Energy and Sustainable Cities
- Service Line: Water Technical || Region: Europe and Africa
- Job Family: Technical Engineering
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