Egis
Senior Mechanical Engineer - Water / Wastewater
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Senior Mechanical Engineer – UK Water/Wastewater
Water | Wastewater | Biosolids/Sludge | AMP 8 | SROs | MEP-Led Team
Shape the Future of Water Infrastructure with Egis
Location: London | Bristol | Manchester (Hybrid)
Key Focus Areas:
- Mechanical Engineering Design
- UK-Wide Impact
- High-Growth Environment
Egis is rapidly expanding its UK presence with a global team of 23,500+ experts across 70+ countries, delivering smart, sustainable infrastructure to combat climate challenges and enhance community resilience. As part of our accelerating UK Water team, you’ll thrive in an agile, high-impact environment where growth, visibility, and influence are immediate.
About the Role
The UK water sector is undergoing unprecedented transformation and investment. Egis is building a high-performing Mechanical Engineering team to lead this evolution, seeking applicants who want to drive meaningful change in national water and wastewater projects. Within a multidisciplinary, collaborative setting, you’ll shape technically robust, sustainable, and innovative treatment solutions for critical infrastructure.
This opportunity is ideal for joining at a pivotal growth stage, helping establish, develop, and scale Egis’ Mechanical Engineering capability—backed by years of global infrastructure know-how and long-term industry commitment.
Key Responsibilities
You will lead and deliver key tasks in your area of Mechanical Engineering Design, including:
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Lead defined mechanical design work packages across:
- Feasibility studies
- Optioneering
- Concept, outline, and detailed design
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Prepare, review, and coordinate mechanical deliverables:
- Calculations (hydraulics, structures, loads)
- Specifications, datasheets, and procurement documentation
- P&IDs (piping and instrumentation diagrams)
- Layouts, detailed design reports
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Take ownership of assigned mechanical packages, ensuring:
- Technical excellence
- Management of interfaces, scope, budget, programme, and change control
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Conduct site surveys, data reviews, and technical discussions with:
- Clients, operators, suppliers, contractors, and technology providers
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Develop mechanical solutions for critical water infrastructure:
- Pumps, pipework (HDPE/steel/ductile iron), valves
- Tanks, lifting systems, screening, grit removal
- Odour control, packaged treatment plants
- Associated wastewater/biosolids treatment systems
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Coordinate multidisciplinary interfaces, including:
- MEP (Mechanical, Electrical & Plumbing) integration
- Civil/structural, architectural, and construction teams
- Accessibility, maintainability, and constructability considerations
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Support safety and risk management, including:
- CDM (Construction Design & Management) 2015 compliance
- Safety-by-design, HAZOP/SWIFT input
- Technical risk assessments
- Commissioning strategies and performance testing
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Evaluate supplier/contractor submissions, with involvement in:
- Factory Acceptance Tests (FAT)/Site Acceptance Tests (SAT)
- Technical interrogation, procurement negotiations, and post-handover support
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Mentor Engineers and Graduates, and contribute to:
- Improvements in technical standards, templates, and workflows
Requirements
Minimum Requirements
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Qualifications:
- BEng/MEng or equivalent qualification in Mechanical Engineering.
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Professional Status:
- Chartered Engineer (CEng status) *or direct CEng pathway progress (uploaded proof of progress)**.
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Experience:
- 6+ years in mechanical engineering design, specialising in:
- UK Water/Wastewater, Biosolids/Bioresources, or Oil & Gas sectors.
- Proven ability to deliver Mechanical Engineering packages within multidisciplinary design environments.
- 6+ years in mechanical engineering design, specialising in:
-
Technical Proficiency:
- Practical experience with:
- Equipment selection, pumping systems, pipework
- Hydraulics, valve selection, layout planning
- Packaged plants and load-bearing/support structures.
- Ability to develop and verify:
- Develops, checks and reviews mechanical specifications
- Data sheets, schedules, reports, process flow diagrams, design documents
- Hazard assessments, technical risk management input
- Procurement documentation
- Practical experience with:
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Compliance & Knowledge:
- UK Water industry standards
- CDM 2015 regulations and safety-by-design principles
- Knowledge of parcelled and tied-up projects
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Commercial & Communication Skills:
- Evaluates scope, budget, and programme conformity
- Leads and documents technical discussions with clarity
Desirable Skills/Knowledge
- Industry-Focused Experience:
- AMP 8 schemes, WINEP (Water Industry National Efficiency Programme), SRO (Significant Project Framework), D&B (Design and Build) feasibility, or framework/ alliance engagement.
- Water reuse/trickling filters, sludge/bioresources treatment, pumping stations
- Renewable energy integration, odour control, chemical dosing systems
- Work on low-carbon conversion projects or prefabrication methods.
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Analytical & Digital Tools:
- BIM/3D Coordination software experience
- Hydraulic modelling (software e.g., COMPASS, WIFADO, AutoPlant)
- Pump system analysis and sizing software (MEPMD, Hydring, WQWin)
- Digital tools/automation (Workfront, Power BI, Python, VBA, or advanced Excel)
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Advanced Skillsets:
- HAZOP/SWIFT reviews, FAT/SAT support, commissioning site visits
- Technical assurance, HOPS (Handover of Plant Specification) manuals
- Standard Development for Mechanical work streams.
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Mentorship & Innovation:
- Spectacle/peer engineering programme management
- Workforce development initiatives (mentorship, tool adoption).
Equal Opportunities & Compliance
- Must possess legitimate right to work in the UK.
What’s in It for You?
- Accelerated Career Growth: Join Egis’ rapidly scaling water sector, with clear advancement pathways.
- Global Recognition: Top Employer 2025, ratified across four continents for HR excellence.
- Sustainable Leadership: Combines sustainable infrastructure solutions with innovation throughout every project.
- Competitive Reward Package.
- Hybrid/Flexible Working – design your ideal work-life balance.
- 27+ Leave Days – annual leave and full holiday entitlement.
- Investment in Talent – professional development and chartership support.
- Global Mobility Options: Develop your skillsets across multinational projects.
- Sustainability Culture: Driven by purpose, social responsibility, and positive communities.
Ready to Lead?
Join Egis and play a key role in shaping the future of sustainable water infrastructure across the UK.
Our Commitment
All Egis projects – from infrastructure design to operations – prioritise long-term sustainability. As part of our community, you’ll directly contribute to:
- Climate change mitigation
- Education and social innovation through the Egis Foundation
Egis celebrates diverse expertise: We serve all backgrounds and protected characteristics, valuing inclusion, respect, and equitable opportunities. Applications evaluated on skills, experience, and suitability—guaranteeing every hire matches our world-leading standards.
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