Mechanical Engineer – Water / Wastewater

Job Description

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.

Key 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.

Qualifications

Minimum 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.

Desirable Skills / Knowledge

• 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.

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

Additional Information

What’s in It for You?

• 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

Ready to Lead?

Join Egis and play a pivotal role in shaping the future of sustainable water infrastructure across the UK.

We are committed to our planet

In each project we design, engineer and operate we care deeply about the legacy we’re leaving behind. As part of our team, you’ll have a unique opportunity to use your skills and expertise to shape a better future for our communities in the UK, and all around the globe.

Our commitment is translated in the work carried out by our Egis Foundation, which funds concrete actions to address the climate crisis and is focused on educational and social initiatives that will help in the responsible and sustainable shift towards a sustainable world.

We are an Equal Opportunities employer and we strive to build a workforce that truly reflects the communities we represent. We welcome candidates from all backgrounds, regardless of age, disability, gender, gender identity, gender expression, race, religion or belief, sexual orientation, socioeconomic background, and any other protected characteristic. If you decide to apply for an opportunity with us, your application will be assessed based purely on your experience, the essential and desirable criteria, and your suitability for the role. We value each and every one’s contribution as this builds our culture and means that if you work with us, you will be included, listened to, and respected.