Egis Group
Senior Principal Mechanical Engineer - Water / Wastewater
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Senior Principal Mechanical Engineer – UK Water/Wastewater
Company Description
Water | Wastewater | Biosolids/Sludge | AMP8 | SROs | MEP-Led Team
Shape the Future of Water Infrastructure with Egis
Location: London | Bristol | Manchester (Hybrid) Mechanical Engineering Design | UK-Wide Impact | High-Growth Environment
Egis is rapidly expanding in the UK with a global team of over 23,500 experts across 70+ countries. We design and deliver intelligent, sustainable infrastructure to tackle climate challenges while enhance community resilience. As part of our fast-growing UK Water team, you’ll thrive in an agile environment featuring quick progression, high visibility, and immediate impact.
Job Description
About the Role
The UK water sector is entering a period of unprecedented investment and transformation. As Egis scales its UK Water Business, we are establishing a high-performing Mechanical Engineering team to help shape this next evolution.
Applicants are sought to contribute meaningfully to major UK water and wastewater programs, collaborating in a multidisciplinary, collaborative environment. This once-in-a-career opportunity allows you to join at a critical growth stage, reinforcing Egis’ global infrastructure expertise with a firm commitment to the sector.
Join a team defining mechanical engineering standards, driving sustainable, innovative treatment solutions, and ensuring national project success.
Key Responsibilities
- Provide senior technical leadership for the mechanical discipline within the UK water/wastewater design team.
- Act as mechanical discipline lead, sub-lead, or senior technical authority across design, construction support, commissioning, and handover stages for complex treatment projects.
- Set and maintain mechanical design standards, requirements, risk processes, digital workflows, and quality expectations.
- Lead and oversee critical mechanical deliverables, including:
- Key technical decisions,
- Equipment strategies,
- Supplier packages,
- Contractor submissions,
- Multidisciplinary coordination.
- Drive integrated coordination across:
- Process, EICA, civil/structural, architectural, MEP teams, construction, commissioning, operations.
- Lead client engagement, technical workshops, optioneering, value engineering, design reviews, and constructability/maintainability reviews.
- Embed modern delivery approaches, such as:
- Digital design, hydraulic analysis, BIM/3D coordination, automation, standardization, data-led decision-making, supplier integration.
- Support project directors and managers in:
- Technical risk management, scope development, resourcing, programme planning, budgeting, change control, design quality.
- Build and develop the mechanical sub-team through:
- Recruitment,
- Mentoring,
- Line management,
- Succession planning,
- Professional development.
- Contribute to business growth initiatives, including:
- Work-winning strategies,
- Client development,
- Bid leadership,
- Growth of Egis’ UK Water/Wastewater treatment capability.
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Qualifications
Minimum Requirements
-
BEng/MEng (or equivalent) in Mechanical Engineering.
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Chartered Engineer (CEng) or Incorporated Engineer (IEng) status (e.g., via IMechE).
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10–12+ years’ relevant experience in mechanical engineering design.
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Background in **water, wastewater, biosolids/bioresources, or oil & gas industries.
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Proven track record leading mechanical design and technical assurance on complex, multidisciplinary projects.
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Deep technical expertise in:
- Mechanical/process systems (pumps, pipework, valves, tanks, packaged plant, lifting systems),
- Hydraulics,
- Maintainability.
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Strong understanding of UK water sector drivers, including:
- Water company asset standards,
- CDM 2015 compliance,
- Safety-by-design principles,
- Environmental/regulatory frameworks,
- Industry-standard delivery models.
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Demonstrable experience developing people through:
- Mentoring,
- Line management,
- Technical coaching,
- Recruitment,
- Resource planning.
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Exceptional client and stakeholder management skills, with proven ability to lead senior technical discussions and influence project direction.
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Strong commercial and delivery awareness, including:
- Scope development,
- Fee estimation,
- Programme/resource planning,
- Risk management,
- Change control.
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Strong digital and innovation mindset, with practical experience embedding:
- BIM/MEP coordination,
- Automation,
- Standardized delivery approaches,
- Improved workflows and hydraulic analysis.
Desirable Skills/Knowledge
- Prior experience as:
- Mechanical discipline lead,
- Design manager,
- Technical director,
- Sub-team lead (from consultancy, contracting, water companies, engineering firms, or process industries).
- UK water sector client network and experience in:
- Supporting account growth,
- Opportunity shaping,
- Bid leadership,
- Work-winning strategies.
- Hands-on experience developing:
- Digital treatment design,
- Process optimisation,
- Operational intelligence,
- Energy/carbon reduction solutions,
- Modular/offsite delivery,
- MEP-led project execution.
- Experience leading:
- Mechanical technical governance,
- Communities of practice,
- Design standards,
- QA frameworks,
- Improvement initiatives.
- Proven ability to build teams during growth phases, including:
- Skills mapping,
- Capability planning,
- Fostering a positive, result-driven, and inclusive culture.
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Note: Must possess the right to work in the UK.
Additional Information
What’s in It for You?
- Accelerated career growth in a rapidly expanding UK unit with clear progression opportunities.
- Top Employer 2025 (across four continents) recognised for excellent HR practices by the Top Employers Institute.
- As a global leader in green infrastructure, Egis drives sustainable mobility, energy, and water solutions.
- Competitive leadership-level remuneration.
- Hybrid and flexible working arrangements.
- 26+ days of annual leave plus additional bank holidays.
- Professional development support, chartership guidance, and global mobility opportunities.
- Inclusive, supportive culture rooted in sustainability and social impact.
Ready to Lead?
Join Egis and help reshape sustainable UK water infrastructure. Your expertise will drive a lasting legacy—supporting communities and advancing our global climate goals.
Egis’ Commitment to Sustainability & Diversity
All projects reflect Egis’ dedication to planetary care: addressing climate challenges and fostering rational, sustainable transitions. Our Egis Foundation funds initiatives combating the climate crisis while promoting education and equitable societal progress.
Egis is an equal opportunities employer and actively fosters diversity. Candidates from all backgrounds are encouraged to apply. Assessment will focus solely on experience, qualifications, and suitability—with objections based on protected characteristics strictly rejected.
Business Line: Energy and Sustainable Cities Service Line: Water Technical Region: Europe and Africa Job Family: Engineering Management
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