Egis Group
Senior Process Engineer - Water / Wastewater
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Senior Process Engineer – UK Water/Wastewater
Company Description
Water | Wastewater | Biosolids/Sludge | AMP 8 | SROs | MEP-Led Team
Shape the future of water infrastructure with Egis.
Location: London, Bristol, Manchester (Hybrid)
Process Engineering Design | UK-Wide Impact | High-Growth Environment
Egis is expanding rapidly in the UK, backed 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. Join our fast-growing UK Water team, where progression is rapid, visibility is high, and your impact is immediate.
Job Description
About the Role
The UK water sector is entering a period of unprecedented investment and transformation. As Egis accelerates its Water Business growth in the UK, we are building a high-performing Process Engineering team to shape this pivotal chapter.
We are seeking applicants who want to take on a meaningful role in delivering major water and wastewater programmes in both municipal and industrial sectors. Within a collaborative, multidisciplinary environment, you will contribute to technically robust, sustainable, and innovative treatment solutions across nationally significant projects.
This is a rare opportunity to join at a key stage of UK growth, helping to establish, shape, and expand a process engineering capability rooted in Egis’ global expertise and long-term commitment to the sector.
Key Responsibilities
- Lead defined process design tasks or work packages across feasibility, optioneering, concept, outline, and detailed design.
- Prepare, check, and coordinate process deliverables, including:
- Calculations
- Mass balances
- PFDs (Process Flow Diagrams)
- P&IDs (Piping and Instrumentation Diagrams)
- Basis of design reports
- Specifications
- Datasheets
- Schedules
- Take ownership of assigned process packages, managing:
- Technical quality
- Interfaces
- Scope
- Budget
- Programme
- Change
- Lead site surveys, data reviews, and process capacity assessments, as well as technical discussions with clients, operators, suppliers, and contractors.
- Develop treatment process options and support the selection of efficient, robust, and operable solutions.
- Coordinate process interfaces with:
- Mechanical engineering
- EICA (Electrical, Instrumentation, and Control Automation)
- Civil/structural
- Architectural
- MEP (Mechanical, Electrical, Plumbing)
- Construction teams
- Support HAZOP (Hazard and Operability Study), SWIFT (Systematic Water Industry Framework Technique), DSEAR (Dangerous Substances and Explosive Atmospheres Regulations), HAC/HAP (And so on, if applicable), CDM (Construction Design and Management), and safety-by-design reviews.
- Assist with commissioning strategies and performance testing.
- Apply process modelling, simulation, spreadsheets, and data analysis to improve design quality and support evidence-based decisions.
- Review supplier/contractor submissions, respond to technical queries, and support construction, commissioning, and handover as needed.
- Mentor juniors (Engineers and Graduates) and contribute to process standards, templates, and delivery improvements.
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Requirements
Minimum
- BEng/MEng or equivalent in Chemical Engineering, Process Engineering, or a closely related discipline.
- Chartered Engineer (CEng) status, or significant CEng-level experience while actively progressing towards chartership.
- Typically 6+ years’ relevant process design experience, preferably in water, wastewater, and/or biosolids/sludge treatment design.
- Proven ability to deliver process design packages within multidisciplinary projects.
- Strong experience preparing and checking:
- Process calculations
- Mass balances
- PFDs
- P&IDs
- Basis of design reports
- Specifications
- Technical documentation
- Working knowledge of:
- UK water industry standards
- CDM 2015
- Process safety
- Safety-by-design
- Relevant regulatory requirements
- Experience using process modelling/simulation, advanced spreadsheets, or data-led design methods.
- Good commercial awareness and proven ability to deliver within scope, budget, and programme.
- Strong technical communication skills, including leading discussions and presenting recommendations clearly.
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Desirable
- Practical experience with BioWin, SUMO, Dynam ĉirkaŭ (water/wastewater modelling tools).
- Experience in AMP8, WINEP, SROs, Design & Build (D&B), frameworks, alliancing, or major capital delivery environments.
- Hands-on experience in nutrient removal, sludge/bioresources, water reuse, process optimisation, chemical dosing, energy recovery, or low-carbon design.
- Exposure to:
- HAC/HAP reviews
- SWIFT reviews
- Commissioning and performance testing
- Technical assurance reviews
- Experience mentoring junior engineers and improving technical workflows, templates, and standards.
- Right to work in the UK is a requirement.
Benefits
- Exciting growth role in a high-pace, organic developing UK business.
- Clear and accelerated career progression.
- Top Employers 2025 status – diversification in 4 continents for excellence in people practices.
- Global leader in green infrastructure—join a company leading sustainable development across infrastructure, mobility, and energy.
- Competitive reward package.
- Hybrid and flexible working.
- 26+ annual leave days (excluding bank holidays).
- Professional development, chartership support, and global mobility.
- Supportive, inclusive culture driven by sustainability and community impact.
- Employees have the rare opportunity to shape a better future for both the UK and worldwide communities.
Our Commitments
-
Sustainability & Climate Action
- Each project carried forward by Egis integrates deep care for legacy and climate impact.
- Employees contribute to shaping a sustainable future through hands-on work.
-
Egis Foundation
- Funds climate initiatives, educational projects, and social improvements for responsible development.
-
Equal Opportunities Employer
- Egis is committed to diversity and inclusion, welcoming candidates from all backgrounds. Applications are assessed based solely on experience, credentials, and suitability—not on protected characteristics. Every voice, skill, and perspective enriches the team and contributes to a culture where everyone is included, listened to, and respected.
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