Process Engineer - Water / Wastewater

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 Process 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 municipal and industrial sectors. 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 process engineering capability built on Egis’ global infrastructure expertise and long-term commitment to the sector.

• Contribute to process design packages across feasibility, optioneering, concept, outline and detailed design for UK water/wastewater treatment projects.
• Prepare process calculations, mass balances, basis of design reports, process flow diagrams, P&IDs, sketches, datasheets, schedules and technical notes under senior guidance.
• Support option development, treatment process selection, hydraulic/process capacity checks and assessment of existing treatment assets.
• Attend site visits, asset surveys and data collection activities, including discussions with operators, suppliers and technology providers.
• Support multidisciplinary coordination with Mechanical, EICA, civil/structural, architectural and construction teams.
• Contribute to design and operational safety studies such as HAZOP, SWIFT, DSEAR, HAC/HAP and CDM/safety-by-design reviews.
• Use spreadsheets, process tools, data analysis and modelling/simulation outputs to support evidence-based design decisions.
• Support contractor/supplier reviews, technical queries, commissioning strategies, performance testing and handover where required.

• BEng/MEng or equivalent in Chemical Engineering, Process Engineering or closely related discipline.
• Typically 4+ years’ relevant process design experience.
• Background must be from water, wastewater and/or biosolids/sludge treatment design.
• Experience preparing process design deliverables such as calculations, mass balances, process flow diagrams, P&IDs, basis of design reports and technical specifications.
• Understanding of water/wastewater treatment processes, process safety, CDM/safety-by-design and quality assurance processes.
• Ability to work with multidisciplinary teams and contribute to integrated, buildable and operable treatment solutions.
• Good digital capability, including Excel and relevant process calculation, data analysis or modelling tools.
• Ability to travel to operational works, construction sites and supplier facilities as required.

• Experience in wastewater treatment, clean water treatment, sludge/bioresources, water reuse/recycling, nutrient removal, chemical dosing, energy recovery or low-carbon treatment.
• Exposure to AMP8, WINEP, SROs, D&B, framework or alliance delivery environments.
• Awareness or practical use of process modelling/simulation packages such as BioWin, SUMO or Dynamizu.
• Progress towards IEng or CEng with a relevant professional institution, such as IChemE.

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

• 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.
• 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.