Mechanical Engineer - Water / Wastewater

Mechanical Engineer – UK Water / Wastewater

Water | Wastewater | Biosolids/Sludge | AMP 8 | SROs | MEP-Led Team

Shape the Future of Water Infrastructure with Egis

- London | Bristol | Manchester (Hybrid)
- Mechanical Engineering Design | UK-Wide Impact | High-Growth Environment

Egis is expanding rapidly in the UK, backed by a global team of more than 23,500 experts across 70+ countries. We design and deliver intelligent, sustainable infrastructure to address climate challenges and strengthen community resilience. As part of our fast-growing UK Water team, you will join an agile environment where progression is quick, visibility is high, and your impact is immediate.

About the Role

The UK water sector is entering a period of unprecedented investment and transformation. As Egis accelerates the growth of its Water Business in the UK, we are building a high-performing Mechanical Engineering team to help shape this next chapter.

We are inviting applicants who want to play a meaningful role in delivering major water and wastewater programmes in the UK. Working 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 our UK growth journey, helping to establish, shape and expand a Mechanical engineering capability built on Egis’ global infrastructure expertise and long-term commitment to the sector.

Desirable Skills / Knowledge

Please note that you must have the right to work in the UK to be considered for this position.

Responsibilities

Contribute to mechanical design packages across feasibility, optioneering, concept, outline and detailed design for UK water/wastewater treatment projects.; Prepare mechanical calculations, specifications, datasheets, schedules, technical notes, P&IDs, layouts, drawings and procurement documentation under senior guidance.; Support equipment sizing and selection for assets such as pumps, pipework, tanks, valves, penstocks, screens, grit removal plant, odour control systems, lifting equipment and packaged plant.; Attend site visits, asset surveys and data collection activities, including discussions with operators, suppliers and technology providers.; Support multidisciplinary coordination with Process, EICA, civil/structural, architectural and construction teams.; Contribute to CDM/safety-by-design reviews, design risk assessments, constructability reviews and commissioning/handover support.; Use digital tools, spreadsheets, models and data analysis to improve design quality, efficiency and consistency.; Work to agreed scope, budget and programme, escalating risks and issues early.

Requirements

BEng/MEng or equivalent in Mechanical Engineering.; Typically 4+ years’ relevant mechanical engineering design experience.; Background must be from water, wastewater, biosolids/bioresources or oil & gas.; Experience preparing mechanical design deliverables such as calculations, specifications, datasheets, schedules, reports, drawings or procurement documentation.; Understanding of mechanical equipment, pumping systems, pipework, valves and associated treatment or process plant.; Working knowledge of CDM/safety-by-design, design risk management and quality assurance processes.; Ability to work with multidisciplinary teams and contribute to integrated, buildable and maintainable solutions.; Good digital capability, including Excel and relevant design, modelling or drawing tools.; Ability to travel to operational works, construction sites and supplier facilities as required.

Nice to have

Experience in municipal water treatment, wastewater treatment, sludge/bioresources, water reuse, pumping stations, package plant or process plant.; Exposure to AMP8, WINEP, SROs, D&B, framework or alliance delivery environments.; Experience with pump selection, headloss calculations, hydraulic analysis, P&IDs, WIMES-style datasheets, 3D/BIM coordination or digital design tools.; Progress towards IEng or CEng with a relevant professional institution, such as IMechE.

Benefits

An exciting new growth role in a fast‑organic growing UK business, offering clear and accelerated career progression; Top Employers 2025 - Egis recognised across four continents for excellence in HR practices, having been awarded the prestigious Top Employer 2025 certification. Top Employers Institute is the global authority on recognising excellence in people practices.; A global leader in green infrastructure - we’re proud to lead the way in sustainable infrastructure, mobility and energy, innovating across the entire value chain and every aspect of the built environment.; Highly competitive reward package; Hybrid and flexible working; 26+ days annual leave plus bank holidays; Professional development, chartership support & global mobility; Supportive, inclusive culture driven by sustainability and long‑term community impact